IBM Personal Computer 6644 User Manual

Hardware Maintenance Service  
for Service Level A  
Machine Types 6644, 6645 and 6646  
6644/6645/6646  
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Contents  
Contents .............................................................. III  
Notices ................................................................VII  
Safety Information ...............................................VIII  
Laser Compliance Statement ............................XXX  
Trademarks ......................................................XXXI  
Preface ............................................................XXXII  
General Information ............................................. 1  
Introduction ............................................................ 2  
Product Overview ................................................... 3  
Processors (Machine Type 6644) .................... 3  
Processors (Machine Type 6645/6646) ........... 3  
Memory ............................................................ 3  
External Ports................................................... 4  
Hard Disk Drive ................................................ 4  
CD-ROM Drive ................................................. 4  
Multimedia........................................................ 4  
Video................................................................ 4  
Power Management......................................... 5  
Power Supply................................................... 5  
Internal Cabling ................................................ 5  
Keyboard.......................................................... 5  
Mouse .............................................................. 5  
Hardware Interfaces ............................................... 6  
CMOS Reset .......................................................... 7  
Power-On Password .............................................. 8  
Flash (BIOS) Update Procedure ............................ 9  
BIOS-contained Model Number and  
Serial Number ...................................................... 10  
BIOS Configuration/Setup Utility .......................... 12  
Working with the Setup Menus ...................... 12  
Viewing System Information, and  
Product Data .................................................. 15  
Devices and I/O ports..................................... 16  
Startup Options .............................................. 19  
Date and Time................................................ 21  
System Secruity ............................................. 21  
Advanced Setup............................................. 24  
Power Management....................................... 25  
Specifications ....................................................... 27  
Dimension (width x depth x height)................ 27  
Weight............................................................ 27  
Environment................................................... 27  
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Electrical input................................................ 27  
Operating Requirements ...................................... 28  
Check Procedures ............................................. 29  
Introduction .......................................................... 30  
Start ..................................................................... 31  
Index of Symptoms, Messages, Error Codes,  
or Beeps ............................................................... 36  
Troubleshooting ................................................... 55  
Factory-Installed Storage Devices ................. 55  
Audio (Not Supported by Diagnostics Program) .. 59  
CD-ROM Drive ..................................................... 62  
Memory ................................................................ 64  
Keyboard .............................................................. 65  
Mouse .................................................................. 66  
Power Supply ....................................................... 68  
Monitor ................................................................. 70  
Undetermined Problems ...................................... 72  
Diagnostic Aids .................................................. 75  
Introduction .......................................................... 76  
Power-On Self Test .............................................. 77  
Diagnostic CD ...................................................... 79  
Using the Diagnostic CD ................................ 79  
Using Diagnostic Program from  
Recovery CD.................................................. 80  
Diagnostics Program Features....................... 81  
Repair Information ............................................. 83  
Removals and Replacements .............................. 84  
Cover.............................................................. 85  
Processor and Fansink .................................. 86  
Memory (DIMM) ............................................. 89  
Adapter Card.................................................. 90  
Internal Speaker............................................. 91  
USB Port ........................................................ 92  
CD-ROM Drive ............................................... 93  
Hard Disk Drive .............................................. 95  
Power Supply................................................. 97  
Power Button/Indicator LED and Cable ......... 98  
System Board................................................. 99  
System Backup Battery................................ 100  
Handling ESD-Sensitive Parts ........................... 101  
Software Recovery Procedure ........................... 102  
Parts/Test Point Locations .............................. 103  
Introduction ........................................................ 104  
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System Board Jumpers and Connectors ........... 105  
Power Supply Connectors and Voltages ........... 107  
Network Cards ................................................... 109  
3.5-In. Hard Disk Drive Jumper Settings ............ 110  
CD-ROM Drive ................................................... 113  
CD-ROM Drive Rear Panel Connectors and  
Jumpers ....................................................... 115  
DIMM Configurations ......................................... 116  
System Board Connector Pin Signals ................ 117  
Monitor Port Signals..................................... 117  
IDE Cable Connector Signals ...................... 117  
Safety Inspection Guide .................................. 119  
General Guidelines ............................................ 120  
Parts Catalog .................................................... 121  
Abbreviations ..................................................... 122  
System Assembly .............................................. 123  
Assembly 1a: System Unit- Interior.............. 123  
Assembly 1b: System Unit - Exterior............ 126  
Assembly 2: Hard Drive ............................... 127  
Assembly 3: CD-ROM Drive ........................ 128  
Assembly 4: Power Cord.............................. 129  
Assembly 5: Keyboard and Mouse .............. 131  
Appendix A. FRU Number List ........................ 133  
Index .................................................................. 137  
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Notices  
References in this publication to IBM products,  
programs, or services do not imply that IBM intends  
to make these available in all countries in which IBM  
operates. Any reference to an IBM product, program,  
or service is not intended to state or imply that only  
IBM's product, program, or service may be used. Any  
functionally equivalent product, program, or service  
that does not infringe any of IBM's intellectual  
property rights, or other legally protectable rights,  
may be used instead of the IBM product, program, or  
service. References in this publication to IBM  
products, programs, or services are purely hardware-  
related and do not cover circumstances of software  
problems. Evaluation and verification of operation in  
conjunction with other products, program, or services,  
except those expressly designated by IBM are the  
user's responsibility.  
IBM may have patents or pending patent applications  
covering subject matter in this document. The  
featuring of these patents, pending or otherwise, in  
this document does not give you any license to these  
patents. You can send license inquires, in writing, to  
the IBM director of Commercial Relations, IBM  
Corporation, Purchase, NY10577.  
Voltage Supply Switch Settings  
Your IBM Personal Computer might have voltage  
switches, which must be set correctly for your voltage  
supply. If your monitor or system unit has a voltage  
switch, complete these steps to make sure each  
switch is set correctly:  
1. Determine the correct voltage switch setting for  
your area:  
Voltage Supply Range  
100-127 V  
Voltage Switch Setting  
115 V  
230 V  
200-240 V  
2. Locate the voltage switch on the back of your  
monitor or system unit. If the setting shown on the  
switch is:  
Correct: start setting up your IBM computer.  
Incorrect: change the voltage switch setting.  
Notices VII  
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Safety Information  
DANGER  
To avoid a shock hazard, do not connect or  
disconnect any cables or perform installation,  
maintenance, or reconfiguration of this product during  
an electrical storm.  
To avoid shock hazard:  
The power cord must be connected to a properly  
wired and earthed receptacle.  
Any equipment to which this product will be  
attached must also be connected to properly wired  
receptacles.  
When possible, use one hand to connect or  
disconnect signal cables to prevent a possible shock  
from touching two surfaces with different electrical  
potentials.  
Electrical current from power, telephone, and  
communications cables is hazardous. To avoid shock  
hazard, connect and disconnect cables as described  
following when installing, moving, or opening covers  
of this product or attached devices.  
To Connect  
To Disconnect  
1. Turn Everything OFF.  
2. First, remove power  
cord(s) from outlet.  
1. Turn Everything OFF.  
2. First, attach all cables to  
devices.  
3. Remove signal cables  
from receptacles.  
3. Attach signal cables to  
receptacles.  
4. Attach power cord(s) to  
outlet.  
4. Remove all cables from  
devices.  
5. Turn device ON  
IMPORTANT:  
When replacing the battery, use only IBM Part  
Number 33F8354 or an equivalent type battery  
recommended by the manufacturer. If your  
system has a module containing a lithium  
battery, replace it only with the same module  
type made by the same manufacturer. The  
VIII  
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battery contains lithium and can explode if not  
properly used, handled, or disposed of.  
Do not:  
Throw or immerse into water  
Heat to more than 100°C (212°F)  
Repair or disassemble  
Dispose the battery as required by local ordinances  
or regulations.  
IMPORTANT:  
When a CD-ROM drive is installed, note the following.  
Use of controls or adjustments or performance of  
procedures other than those specified herein might  
result in hazardous radiation exposure.  
Removing the covers of the CD-ROM drive could  
result in exposure to hazardous laser radiation. There  
are no serviceable parts inside the CD-ROM drive.  
Do not remove the CD-ROM drive covers.  
DANGER  
Some CD-ROM drives contain an embedded Class  
3A or Class 3B laser diode. Note the following.  
Laser radiation when open. Do not stare into the  
beam, do not view directly with optical instruments,  
and avoid direct exposure to the beam.  
IMPORTANT:  
Electrical current from power, telephone, and  
communication cables can be hazardous. To avoid  
personal injury or equipment damage, disconnect the  
attached power cords, telecommunications systems,  
networks, and modems before you open the server  
covers, unless instructed otherwise in the installation  
and configuration procedures.  
Notices IX  
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PERIGO:  
Para evitar choques elétricos, não conecte ou  
desconecte nenhum cabo, nem efetue instalação,  
manutenção ou reconfiguração deste produto  
durante uma tempestade com raios.  
Para evitar choques elétricos:  
O cabo de alimentação deve ser conectado a um  
receptáculo corretamente instalado e aterrado.  
Todos os equipamentos aos quais este produto  
será conectado devem também ser conectados a  
receptáculos corretamente instalados.  
Quando possível, utilize uma das mãos para  
conectar ou desconectar cabos de sinal, para evitar  
um possível choque ao tocar duas superfícies com  
potenciais elétricos diferentes.  
A corrente elétrica proveniente de cabos de  
alimentação, de telefone e de comunicação é  
perigosa. Para evitar choques elétricos, conecte e  
desconecte os cabos conforme descrito a seguir, ao  
instalar, movimentar ou abrir tampas deste produto  
ou de dispositivos conectados.  
Para Conectar  
Para Desconectar  
1.DESLIGUE tudo.  
1.DESLIGUE tudo.  
2.Conecte primeiro todos  
oscabos nosdispositivos.  
2.Remova primeiro o(s)  
cabo(s) de alimentação  
das tomadas.  
3.Conecte os cabos de sinal  
nos receptáculos.  
3.Remova os cabos de sinal  
dos receptáculos.  
4.Conecte o(s) cabo(s) de  
alimentação nas  
tomadas.  
4.Remova todos os cabos  
dos dispositivos  
5.LIGUE o dispositivo  
X
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CUIDADO:  
Ao substituir a bateria, utilize apenas o Número de  
Peça IBM 33F8354 ou um tipo de bateria equivalente  
recomendado pelo fabricante. Se seu sistema  
possuir um módulo com uma bateria de lítio,  
substitua-o apenas pelo mesmo tipo de módulo,  
produzido pelo mesmo fabricante. A bateria contém  
lítio e pode explodir se não for utilizada, manuseada  
e descartada de forma adequada.  
Não:  
Jogue ou coloque na água  
Aqueça a mais de 100°C (212°F)  
Conserte nem desmonte.  
Descarte a bateria conforme requerido pelas  
disposições e regulamentações locais.  
CUIDADO:  
Quando uma unidade de CD-ROM estiver instalada,  
observe o seguinte.  
A utilização de controles ou ajustes ou a execução de  
procedimentos diferentes daqueles especificados  
nesta publicação pode resultar em exposição  
perigosa à radiação.  
A remoção das tampas da unidade de CD-ROM pode  
resultar em exposição a radiação perigosa de laser.  
Não existem peças que possam ser consertadas no  
interior da unidade de CD-ROM. Não remova as  
tampas da unidade de CD-ROM.  
PERIGO:  
Algumas unidades de CD-ROM contém um diodo de  
laser da Classe 3A ou da Classe 3B. Observe o  
seguinte.  
Radiação de laser quando aberto. Não olhe  
diretamente para o feixe de laser, não olhe  
Notices XI  
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diretamente com instrumentos óticos, e evite  
exposição direta ao raio.  
CUIDADO:  
A corrente elétrica proveniente de cabos de  
alimentação, de telefone e de comunicação é  
perigosa. Para evitar ferimentos pessoais ou danos  
aos equipamentos, desconecte os cabos de  
alimentação, sistemas de telecomunicação, redes e  
modems antes de abrir as tampas do servidor, a  
menos que receba outras instruções nos  
procedimentos de instalação e configuração.  
XII  
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Notices XIII  
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XIV  
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Notices XV  
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XVI  
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PERIGO:  
Pour éviter tout risque de choc électrique, ne  
manipulez aucun câble et n'effectuez aucune  
opération d'installation, d'entretien ou de  
reconfiguration de ce produit au cours d'un orage.  
Pour éviter tout risque de choc électrique :  
Les cordons d'alimentation du présent produit et  
de tous les appareils qui lui sont connectés doivent  
être branchés sur des socles de prise de courant  
correctement câblés et mis à la terre.  
Afin d'éviter tout risque de choc électrique provenant  
d'une différence de potentiel de terre, n'utilisez  
qu'une main, lorsque cela est possible, pour  
connecter ou déconnecter les cordons d'interface.  
Le courant électrique passant dans les câbles de  
communication, ou les cordons téléphoniques et  
d'alimentation peut être dangereux. Pour éviter tout  
risque de choc électrique, lorsque vous installez ou  
que vous déplacez le présent produit ou des  
périphériques qui lui sont raccordés, reportez-vous  
aux instructions ci-dessous pour connecter et  
déconnecter les différents cordons.  
Connexion  
Déconnexion  
1. Mettez les unités hors  
tension.  
1. Mettez les unités hors  
tension.  
2. Commencez par  
brancher tous les  
2. Commencez pas  
débrancher les cordons  
alimentation des socles  
de prise de courant.  
cordons sur les unités.  
3. Branchez les câbles  
d'interface sur les prises. 3. Débranchez les câbles  
d'interface des prises.  
4. Branchez les cordons  
d'alimentation sur un  
socle de prise de  
courant.  
4. Débranchez tous les  
câbles des unités.  
5. Mettez les unités sous  
tension.  
Notices XVII  
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ATTENTION:  
Remplacez la pile usagée par une pile de référence  
identique exclusivement - voir la référence IBM - ou  
par une pile équivalente recommandée par le  
fabricant. Si votre système est doté d'un module  
contenant une pile au lithium, vous devez le  
remplacer uniquement par un module identique,  
produit par le même fabricant. La pile contient du  
lithium et présente donc un risque d'explosion en cas  
de mauvaise manipulation ou utilisation.  
Ne la jetez pas à l'eau.  
Ne l'exposez pas à une température supérieure à  
100°C.  
Ne cherchez pas à la réparer ou à la démonter.  
Pour la mise au rebut, reportez-vous à la  
réglementation en vigueur.  
ATTENTION:  
Si une unité de CD-ROM est installée, prenez  
connaissance des informations suivantes :  
Pour éviter tout risque d'exposition au rayon laser,  
respectez les consignes de réglage et d'utilisation  
des commandes, ainsi que les procédures décrites  
dans le présent document.  
Pour éviter une exposition directe au rayon laser,  
n'ouvrez pas l'unité de CD-ROM. Vous ne pouvez  
effectuer aucune opération de maintenance à  
l'intérieur.  
PERIGO:  
Certaines unités de CD-ROM contiennent une diode  
laser de classe 3A ou 3B. Prenez connaissance des  
informations suivantes :  
Rayonnement laser lorsque le carter est ouvert.  
Évitez de regarder fixement le faisceau ou de  
XVIII  
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l'observer à l'aide d'instruments optiques. Évitez une  
exposition directe au rayon.  
ATTENTION:  
Le courant électrique circulant dans les câbles de  
communication et les cordons téléphoniques et  
d'alimentation peut être dangereux. Pour votre  
sécurité et celle de l'équipement, avant de retirer les  
carters du serveur, mettez celui-ci hors tension et  
déconnectez ses cordons d'alimentation, ainsi que  
les câbles qui le relient aux réseaux, aux systèmes  
de télécommunication et aux modems (sauf  
instruction contraire mentionnée dans les procédures  
d'installation et de configuration)  
.
VORSICHT:  
Aus Sicherheitsgründen bei Gewitter an diesem  
Gerät keine Kabel anschließen oder lösen. Ferner  
keine Installations-, Wartungs- oder  
Rekonfigurationsarbeiten durchführen.  
Aus Sicherheitsgründen:  
Gerät nur an eine Schutzkontaktsteckdose mit  
ordnungsgemäß geerdetem Schutzkontakt  
anschließen.  
Alle angeschlossenen Geräte ebenfalls an  
Schutzkontaktsteckdosen mit ordnungsgemäß  
geerdetem Schutzkontakt anschließen.  
Signalkabel möglichst einhändig anschließen oder  
lösen, um einen Stromschlag durch Berühren von  
Oberflächen mit unterschiedlichem elektrischem  
Potential zu vermeiden.  
Elektrische Spannungen von Netz-, Telefon- und  
Datenübertragungsleitungen sind gefährlich. Um  
einen Stromschlag zu vermeiden, nur nach den  
Anweisungen arbeiten, die für Installation, Transport  
Notices XIX  
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oder Öffnen von Gehäusen dieses Produkts oder  
angeschlossenen Einheiten gelten.  
Kabel anschließen  
Kabel lösen  
1.Alle Geräte ausschalten  
und Netzstecker ziehen.  
1.Alle Geräte ausschalten.  
2.Zuerst alle Kabel an  
Einheiten anschließen.  
2.Zuerst Netzstecker von  
Steckdose lösen.  
3.Signalkabel an  
Anschlußbuchsen  
anschließen.  
3.Signalkabel von  
Anschlußbuchsen lösen.  
4.Netzstecker an Steckdose 4.Alle Kabel von Einheiten  
anschließen.  
lösen.  
5.Gerät einschalten.  
ACHTUNG:  
Eine verbrauchte Batterie nur durch eine Batterie mit  
der IBM Teilenummer 33F8354 oder durch eine vom  
Hersteller empfohlene Batterie ersetzen. Wenn Ihr  
System ein Modul mit einer Lithium-Batterie enthält,  
ersetzen Sie es immer mit dem selben Modultyp vom  
selben Hersteller. Die Batterie enthält Lithium und  
kann bei unsachgemäßer Verwendung, Handhabung  
oder Entsorgung explodieren.  
Die Batterie nicht  
mit Wasser in Berührung bringen.  
über 100 C erhitzen.  
reparieren oder zerlegen.  
Die örtlichen Bestimmungen für die Entsorgung von  
Sondermüll beachten.  
ACHTUNG:  
Wenn ein CD-ROM-Laufwerk installiert ist, beachten  
Sie folgendes. Steuer- und Einstellelemente sowie  
Verfahren nur entsprechend den Anweisungen im  
XX  
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vorliegenden Handbuch einsetzen. Andernfalls kann  
gefährliche Laserstrahlung auftreten.  
Das Entfernen der Abdeckungen des CD-ROM-  
Laufwerks kann zu gefährlicher Laserstrahlung  
führen. Es befinden sich keine Teile innerhalb des  
CD-ROM-Laufwerks, die vom Benutzer gewartet  
werden müssen. Die Verkleidung des CD-ROM-  
Laufwerks nicht öffnen.  
VORSICHT:  
Manche CD-ROM-Laufwerke enthalten eine  
eingebaute Laserdiode der Klasse 3A oder 3B. Die  
nachfolgend aufgeführten Punkte beachten.  
Laserstrahlung bei geöffneter Tür. Niemals direkt in  
den Laserstrahl sehen, nicht direkt mit optischen  
Instrumenten betrachten und den Strahlungsbereich  
meiden.  
Notices XXI  
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ACHTUNG:  
An Netz-, Telefon- und Datenleitungen können  
gefährliche elektrische Spannungen anliegen. Um  
eine Gefährdung des Benutzers oder Beschädigung  
des Geräts zu vermeiden, ist der Server  
auszuschalten. Die Verbindung zu den  
angeschlossenen Netzkabeln,  
Telekommunikationssystemen, Netzwerken und  
Modems ist vor dem Öffnen des Servergehäuses zu  
unterbrechen (sofern in Installations- und  
Konfigurationsanweisungen nicht anders angegeben)  
PERICOLO:  
Per evitare il pericolo di scosse elettriche durante i  
temporali, non collegare o scollegare cavi, non  
effettuare l'installazione, la manutenzione o la  
riconfigurazione di questo prodotto.  
Per evitare il pericolo di scosse elettriche:  
collegare il cavo di alimentazione ad una presa  
elettrica correttamente cablata e munita di terra di  
sicurezza;  
collegare qualsiasi apparecchiatura collegata a  
questo prodotto ad una presa elettrica  
correttamente cablata e munita di terra di  
sicurezza.  
Quando possibile, collegare o scollegare i cavi di  
segnale con una sola mano per evitare il rischio di  
scosse derivanti dal contatto con due superfici a  
diverso potenziale elettrico.  
La corrente elettrica circolante nei cavi di  
alimentazione, del telefono e di segnale è pericolosa.  
Per evitare scosse elettriche, collegare e scollegare  
icavi come descritto quando si effettuano  
l'installazione, la rimozione o l'apertura dei coperchi  
di questo prodotto o durante il collegamento delle  
unità.  
XXII  
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Per collegare  
Per scollegare  
1.SPEGNERE tutti i  
dispositivi.  
1.SPEGNERE tutti i  
dispositivi.  
2.Collegare prima tutti I cavi 2.Rimuovere prima il(i)  
alle unità.  
cavo(i) di alimentazione  
dalla presa elettrica.  
3.Collegare i cavi di segnale  
alle prese.  
3.Rimuovere i cavi di  
segnale dalle prese.  
4.Collegare il(i) cavo(i) di  
alimentazione alla presa  
elettrica.  
4.Rimuovere tutti i cavi dalle  
unità.  
5.ACCENDERE le unità.  
ATTENZIONE:  
Quando si sostituisce la batteria, utilizzare solo una  
batteria IBM o batterie dello stesso tipo o di tipo  
equivalente consigliate dal produttore. Se il sistema  
di cui si dispone è provvisto di un modulo contenente  
una batteria al litio, sostituire tale batteria solo con un  
tipo di modulo uguale a quello fornito dal produttore.  
La batteria contiene litio e può esplodere se utilizzata,  
maneggiata o smaltita impropriamente.  
Evitare di:  
Gettarla o immergerla in acqua  
Riscaldarla ad una temperatura superiore ai 100°C  
Cercare di ripararla o smaltirla  
Smaltire secondo la normativa in vigore (D.Lgs 22 del  
5/2/97) e successive disposizioni nazionali e locali.  
Notices XXIII  
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ATTENZIONE:  
Quando è installata un'unità CD-ROM, notare quanto  
segue:  
L'utilizzo di controlli, regolazioni o l'esecuzione di  
procedure non descritti nel presente manuale  
possono provocare l'esposizione a radiazioni  
pericolose.  
L'apertura di un'unità CD-ROM può determinare  
l'esposizione a radiazioni laser pericolose. All'interno  
dell'unità CD-ROM non vi sono parti su cui effettuare  
l'assistenza tecnica. Non rimuovere i coperchi  
dell'unità CD-ROM.  
PERICOLO:  
Alcune unità CD-ROM contengono all'interno un  
diodo laser di Classe 3A o Classe 3B. Prestare  
attenzione a quanto segue:  
Aprendo l'unità vengono emesse radiazioni laser.  
Non fissare il fascio, non guardarlo direttamente con  
strumenti ottici ed evitare l'esposizione diretta al  
fascio.  
ATTENZIONE:  
La corrente circolante nei cavi di alimentazione, del  
telefono e di segnale è pericolosa. Per evitare  
situazioni pericolose per le persone o  
danneggiamenti all'apparecchiatura, scollegare i cavi  
di alimentazione, i sistemi di telecomunicazioni, le reti  
e ed i modem prima di aprire i coperchi del servente  
se non diversamente indicato nelle procedure di  
installazione e configurazione.  
XXIV  
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Notices XXV  
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XXVI  
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PELIGRO:  
Para evitar una posible descarga eléctrica, no  
conecte ni desconecte los cables ni lleve a cabo  
ninguna operación de instalación, de mantenimiento  
o de reconfiguración de este producto durante una  
tormenta eléctrica.  
Para evitar una posible descarga:  
El cable de alimentación debe conectarse a un  
receptáculo con una instalación eléctrica correcta  
y con toma de tierra.  
Los aparatos a los que se conecte este producto  
también deben estar conectados a receptáculos  
con la debida instalación eléctrica.  
Cuando sea posible, utilice una sola mano para  
conectar o desconectar los cables de señal a fin de  
evitar una posible descarga al tocar dos superficies  
con distinto potencial eléctrico.  
La corriente eléctrica de los cables de  
comunicaciones, teléfono y alimentación puede  
resultar peligrosa. Para evitar una posible descarga,  
siga las indicaciones de conexión y desconexión de  
los cables siempre que tenga que instalar, mover o  
abrir las cubiertas de este producto o de los  
dispositivos acoplados.  
Instrucciones de  
conexión  
Instrucciones de  
desconexión  
1.Apague todos los  
componentes (OFF).  
1.Encienda todos los  
componentes (ON).  
2.En primer lugar, conecte  
todos los cables a los  
dispositivos.  
2.En primer lugar, retire los  
cables de alimentación de  
las tomas.  
3.Conecte los cables de  
señal a los receptáculos.  
3.Retire los cables de señal  
de los receptáculos.  
4.Conecte los cables de  
alimentación a las tomas.  
4.Retire todos los cables de  
los dispositivos.  
5.Encienda el dispositivo  
(ON).  
Notices XXVII  
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IMPORTANT:  
Al cambiar la batería, utilice únicamente la batería  
IBM Número de pieza 33F8354 o un tipo de batería  
equivalente recomendado por el fabricante. Si el  
sistema tiene un módulo que contiene una batería de  
litio, sustitúyalo únicamente por el mismo tipo de  
módulo del mismo fabricante. La batería contiene litio  
y puede explotar si no se utiliza, manipula o desecha  
correctamente.  
Lo que no debe hacer  
Tirar o sumergir el producto en agua.  
Exponer el producto a una temperatura superior a  
100°C.  
Reparar o desmontar el producto.  
Cuando quiera desechar la batería, siga las  
disposiciones y reglamentaciones locales.  
IMPORTANT:  
Cuando instale una unidad de CD-ROM, tenga en  
cuenta la siguiente información.  
Si se llevan a cabo controles o ajustes o se utilizan  
métodos que no se atengan a lo aquí especificado,  
se puede producir una exposición peligrosa a las  
radiaciones.  
Si se retiran las cubiertas de la unidad de CD-ROM,  
se puede producir una peligrosa exposición a  
radiaciones de láser. Dentro de la unidad de CD-  
ROM no existen piezas reparables. No retire las  
cubiertas de la unidad de CD-ROM.  
PELIGRO:  
Algunas unidades de CD-ROM tienen incorporado un  
diodo de láser de Clase 3A o de Clase 3B Tenga en  
cuenta la siguiente información.  
XXVIII  
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Cuando la unidad está abierta se generan emisiones  
de rayos láser. No dirija la mirada al haz, no lo  
observe directamente con instrumentos ópticos y  
evite la exposición directa.  
IMPORTANT:  
La corriente eléctrica de los cables de  
comunicaciones, de teléfono y de alimentación puede  
resultar peligrosa. Para evitar posibles lesiones o  
daños del aparato, desconecte los cables de  
alimentación, los sistemas de telecomunicaciones,  
las redes y los módems antes de abrir las cubiertas  
del servidor, salvo que se indique lo contrario en las  
instrucciones de las operaciones de instalación y  
configuración.  
Notices XXIX  
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Laser Compliance Statement  
The CD-ROM drive in the computer is a laser  
product. The CD-ROM drive's classification label  
(sample shown below) is located on the drive.  
CLASS 1 LASER PRODUCT  
APPAREIL A LASER CLASSE 1  
LASER KLASSE 1  
LUOKAN 1 LASERLAITE  
PRODUIT LASER  
CATEGORIE 1  
The CD-ROM drive is certified in the U.S. to conform  
to the requirements of the Department of Health and  
Human Services 21 Code of Federal Regulations  
(DHHS 21 CFR) Subchapter J for Class 1 laser  
products.  
In other countries, the drive is certified to conform to  
the requirements of EN60825.  
Class 1 laser products are not considered to be  
hazardous. The CD-ROM drive has an internal Class  
1, 0.5-milliwatt, aluminum gallium-arsenide laser that  
operates at a wavelength of 760 to 810 manometers.  
The design of the laser system and the CD-ROM  
drive ensures that there is no exposure to laser  
radiation above a Class 1 level during normal  
operation, user maintenance, or servicing conditions.  
XXX  
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Trademarks  
The following are trademarks of the IBM Corporation  
in the United States or other countries or both:  
AT  
HelpCenter  
IBM  
Operating System/2  
OS/2  
Personal System/2  
PS/1  
PS/2  
Intel, Pentium, MMX, EtherExpress, and LANDesk  
are trademarks or registered trademarks of Intel  
Corporation.  
Microsoft, MS-DOS, Windows, and Windows NT are  
trademarks or registered trademarks of Microsoft  
Corporation.  
Other company, product, and service names may be  
trademarks or service marks of others.  
Notices XXXI  
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Preface  
This manual contains service information for the  
6644/6645/6646 Service Level A (SL-A) model of  
the IBM Personal Computer, worldwide. This manual  
is intended to be used as a stand-alone document to  
service machine type 6644/6645/6646 products. It is  
divided into the following chapters:  
Notices contains important safety information and  
notices required to service this computer.  
General Information contains a brief description of  
this manual.  
Check Procedures provides step-by-step  
instructions that aid in locating the failing Field  
Replaceable Unit (FRU).  
Diagnostic Aids explains how to use the diagnostics  
tools for isolating failures.  
Repairing Information contains illustrations and  
descriptions to disassemble and reassemble the  
computer.  
Parts/Test Point Locations contains illustrations  
and descriptions of the locations of the major parts,  
jumpers, and connectors .  
Safety Inspection Guide contains information about  
inspecting a machine for safety problems before  
putting the machine under a Maintenance  
Agreement.  
Parts Catalog contains descriptions, illustrations,  
and part numbers for individual FRUs.  
Appendix A, FRU Number Index contains part  
numbers listed in numerical order.  
XXXII  
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General Information  
Introduction ............................................................ 2  
Product Overview ................................................... 3  
Processors (Machine Type 6644) .................... 3  
Processors (Machine Type 6645/6646) ........... 3  
Memory ........................................................... 3  
External Ports .................................................. 4  
Hard Disk Drive ............................................... 4  
CD-ROM Drive ................................................ 4  
Multimedia ....................................................... 4  
Video ............................................................... 4  
Power Management ........................................ 5  
Power Supply .................................................. 5  
Internal Cabling ............................................... 5  
Keyboard ......................................................... 5  
Mouse ............................................................. 5  
Hardware Interfaces ............................................... 6  
CMOS Reset .......................................................... 7  
Power-On Password .............................................. 8  
Flash (BIOS) Update Procedure ............................ 9  
BIOS-contained Model Number and  
Serial Number ...................................................... 10  
BIOS Configuration/Setup Utility .......................... 12  
Working with the Setup Menus ..................... 12  
Viewing System Information, and  
Product Data ................................................. 15  
Devices and I/O ports .................................... 16  
Start Options ................................................. 19  
Date and Time ............................................... 21  
System Secruity ............................................ 21  
Advanced Setup ............................................ 24  
Power Management ...................................... 25  
Specifications ....................................................... 27  
Dimension (width x depth x height) ............... 27  
Weight ........................................................... 27  
Environment .................................................. 27  
Electrical input ............................................... 27  
Operating Requirements ...................................... 28  
General Information 1  
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Introduction  
This chapter gives a general overview of the Machine  
Type 6644/6645/6646, describes the standard and  
optional features, and details functional and  
environmental specifications.  
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Product Overview  
Machine Types 6644, 6645, and 6646 have two low  
profile PCI slots. The 6644 system comes with the  
Intel Celeron processor family while the 6645 and  
6646 comes with the Pentium III processor.  
Listed below are 6644, 6645 and 6646 system  
features:  
Processors (Machine Type 6644)  
Processor in Flip Chip-Pin Grid Array (FC-PGA)  
package with integrated PBSRAM L2 cache  
(128KB)  
One of the following processors can be installed:  
- Celeron - 566 MHz internal, 66 MHz external.  
Processors (Machine Type 6645/6646)  
Pentium III  
Processor in Flip Chip-Pin Grid Array (FC-PGA)  
package with integrated PBSRAM L2 cache  
(256K)  
One of the following processors can be installed:  
- Pentium III - 667/733/866 MHz internal, 133 MHz  
external  
Memory  
128-KB Pipeline Burst Static RAM (PBSRAM)  
built-in Celeron processor for machine type 6644  
and a 256-KB PBSRAM L2 cache built-in Pentium  
III processor for machine types 6645/6646.  
168-pin Synchronous Dynamic Random Access  
Memory (SDRAM), Dual- in-line Memory Module  
(DIMM) sockets.  
- 2 memory sockets.  
- Supports 64-MB, 128-MB or 256-MB DIMM.  
- PC-100 (64-bit, non-ECC, 100MHz, 3.3volt)  
DIMMs with gold contacts (PC-133 memory  
running at 100 MHz)  
- Maximum memory is 512 MB.  
General Information 3  
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External Ports  
Video port (15-pin D-sub connector)  
Five USB ports (two USB ports located at the front  
bezel).  
Microphone-in jack  
Line-out jack  
Line-in jack  
RJ-45 connector  
Hard Disk Drive  
3.5-in., 1-in. height IDE ATA-66 drive. (3.5-in may  
be in acoustic mounting bracket)  
128 KB “look-ahead” cache memory inside the  
hard disk drive  
Average and minimum 12 ms seek time, access  
time varies for the hard disk drive and the hard  
disk drive manufacturer  
CD-ROM Drive  
5.25-in. high-performance, 40X CD-ROM IDE/AT  
drive  
Read data and play audio from standard and mini  
CD-ROM and audio compact discs (audio CDs)  
Multimedia  
An internal single speaker with power connector  
Video  
Onboard video controller (Direct AGP, built-in Intel  
810e chipset)  
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Power Management  
Compliant to ACPI and supports Display Power  
Management Signaling (DPMS) monitor  
Software shutdown by Windows 2000  
System enters standby mode if any of following  
conditions are met:  
- Execute standby from Windows Start menu  
- Press system power button if it is configured to  
act as standby function.  
- System is idle and the standby timer set in the  
Windows Power Management Property elapses.  
Power Supply  
PC-98 compatible 95W ATX power supply  
Switchable high/low voltage selection  
Internal Cabling  
Two 40-pin ribbon cables for hard disk drive and  
CD-ROM drive.  
One 8-pin (6-wire) cable for hard disk, power LEDs  
and power switch.  
Keyboard  
Preferred USB or Rapid Access III USB keyboard  
with 1.8-m (5.8-ft.) cable  
Mouse  
2 Button Sleek USB or ScrollPoint III USB mouse  
with 1.8-m (5.8-ft.) cable  
General Information 5  
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Hardware Interfaces  
The following peripheral interfaces for adapters,  
options, and drives are supported in the system unit.  
Item  
Interface  
Expansion slot for Two low profile PCI (Peripheral  
I/O adapter cards Component Interconnect) v2.1  
compatible expansion slots that  
operates at 33 MHz bus speed.  
Hard disk drives  
Two PCI local bus Enhanced IDE  
v1.0 compatible hard disk drive  
interfaces that support:  
- PIO mode up to 5 mode  
- DMA 32-bit access  
- Ultra 66 Synchronous DMA (66M  
bytes/sec.).  
CD/CD-R/W drive 5.25-in. high-performance, 40X CD-  
ROM or 4X2X24 CD-R/W IDE/AT  
drive.  
Support Bootable CD-ROM Format  
specification version 1.0.  
Compliant to Audio-CD, Video-CD,  
CD-ROM/XA, Karaoke-CD, and  
Photo-CD (both single and multi-  
session) format.  
Video  
Physical interface is compatible with  
the IBM Personal System/2 (PS/2)  
VGA interface.  
Ethernet  
10/100 Mbps, Auto-negotiation for  
automatic speed selection  
PCI 32-bit bus master architecture  
provides high throughput with low  
CPU utilization  
Audio  
Compatible to Sound Blaster, Sound  
Blaster Pro and Windows Sound  
System  
Pointing device  
Keyboard device  
USB  
IBM USB-compatible mouse  
IBM USB-compatible keyboard  
Supports Universal HCI Specification  
for USB 1.0  
6
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CMOS Reset  
This system does not deny access to BIOS Setup  
Utility, if Administrative Password is not set. Execute  
“Load BIOS Default Settings” in BIOS Setup to clear  
the corrupted CMOS data. See “Loading Default  
Settings” on page 14.  
General Information 7  
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Power-On Password  
A power-on password denies access to the system by  
an unauthorized user when the system is powered  
on. When a power-on password is active, the  
password prompt appears on the screen each time  
the system is powered on. The system starts after the  
proper password is entered. See “Power-On  
password” on page 22 for more information about  
how to change, remove and set password in BIOS  
Setup.  
In some cases, you might be required to service a  
system with an active and unknown power-on  
password. To clear a password from the system,  
follow these steps.  
1. Turn off system unit.  
2. Unplug power cable from the electrical outlet.  
IMPORTANT: Do not attempt these steps with the  
power cord plugged into the electrical outlet.  
The power supply maintains +5 Vdc of standby  
power when the power cord is plugged.  
System damage might result if the power cord  
is not unplugged during jumper setting.  
3. Set JP7 to 2-3 position to clear BIOS setting as  
original manufacture setting. See “System Board  
Jumpers and Connectors” on page 105.  
4. Plug power cable, turn on the system, and  
complete the BIOS clear procedure.  
5. Turn off the system, unplug power cable from  
electrical outlet.  
6. Set JP7 to the 1-2 position to enable password  
check process. See “System Board Jumpers and  
Connectors” on page 105.  
IMPORTANT: To reinstall the password, the user  
must enter a password in the Setup Utility. If  
Enhanced Security is enabled and the password is  
forgotten, the system board must be replaced .  
8
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Flash (BIOS) Update Procedure  
NOTE: The flash update procedure will include  
entering the model number and serial number  
information in BIOS. The flash update  
procedure can be performed from a USB  
diskette drive, IDE CD-ROM drive, or a LS120  
drive.  
To run the Flash BIOS from a USB diskette drive or  
an IDE LS120 drive, do the following:  
1. Prepare a diskette with the extracted files from  
LFJTxxA.EXE (xx is the revision level). You can  
get the latest Flash BIOS from the Web at http://  
www.ibm.com/pc and select support and then  
select computer type.  
2. Be sure a properly running USB diskette drive or  
an IDE LS120 drive is connected to the computer  
and that the drive is selected when the computer is  
powered-on.  
3. Insert the flash diskette into the USB diskette or  
LS120 drive A:.  
4. Power-off the system and then, power-on the  
system to start the Flash BIOS.  
5. Follow the utitlity instruction to complete the BIOS  
update procedure.  
6. Wait for the update to complete.  
IMPORTANT: Do not power-off the system while the  
BIOS is running, or the flash ROM will be  
destroyed.  
7. Power-off system after the BIOS is completely  
updated.  
8. For CD-ROM drive, insert the CD, power-off and  
then power-on the computer to start the Flash  
BIOS, then go to step 5.  
General Information 9  
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BIOS-contained Model Number and  
Serial Number  
The model number and serial number information is  
stored in BIOS ROM and displayed in the “Product  
Data” of BIOS Configuration/Setup main menu. If a  
service repair is completed by replacing a new  
system board or a new BIOS ROM, then you are  
required to input the original system's model number  
and serial number into the new BIOS ROM.  
Follow these steps to input the serial number and  
model number to BIOS:  
1. Use BIOS flash utility program.  
2. After the language type is selected, the updated  
serial number will appear on the screen as below:  
IBM Corporation  
POST/BIOS Update Utility  
Version X.X  
The current Serial Number in your machine is: [ AAD3H8R ]  
Would you like to update the Serial Number? [ Y/N ]  
3. Press Y, then press Enter. When the screen  
shows:  
IBM Corporation  
POST/BIOS Update Utility  
Version X.X  
Please enter the Serial Number of your system  
[
]
Enter the serial number and press Enter to continue.  
4. When the next screen shows to update model  
number:  
IBM Corporation  
POST/BIOS Update Utility  
Version X.X  
The current Machine Type/Model in your machine is:[H01506]  
Would you like to update the Machine Type/Model? [ Y/N ]  
Press Y, then press Enter.  
10 IBM Desktop System HMM  
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5. When the screen shows:  
IBM Corporation  
POST/BIOS Update Utility  
Version X.X  
Please enter the Machine Type/Model of your system  
[
]
Enter the model number and press Enter to continue.  
6. Follow the instruction of the flash BIOS utility to  
complete the BIOS update.  
General Information 11  
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BIOS Configuration/Setup Utility  
The Setup Utility lets you review and change  
important information about the computer and its  
hardware.  
Working with the Setup Menus  
Starting the Configuration/Setup Utility  
Follow these steps to enter Setup when the computer  
is off:  
1. Turn on your monitor.  
2. Press and hold F1.  
3. Turn on the system unit.  
If you have previously set a password, you are  
prompted to type in the password after you press the  
F1 key. Refer to the Configuration/Setup Utility Main  
Menu below.  
Configuration/Setup Utility  
Select Options:  
System Summary  
Product Data  
Devices and I/O Ports  
Start Options  
Sate and Time  
System Security  
Advanced Setup  
Power Management  
Save Settings  
Restore Settings  
Load Default Settings  
Exit Setup  
< F1 >  
< ESC> Exit  
Help  
<
>  
Move  
Select  
<Enter>  
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The following table lists specific keys on the keyboard  
that will help you move through the Setup menus:  
Keys  
Function  
Down- or up-  
arrow key  
Use these arrow keys to highlight  
an option on the menu. (Press the  
Enter key to choose the option.)  
Left- or right-  
arrow key  
Use these arrow keys to make a  
selection and change an option's  
setting. On some menus, you can  
use these keys to move from one  
field to another.  
F1  
Press this key if you want help for a  
selected menu option.  
Esc  
After viewing or making changes to  
the settings on a menu, press this  
key to exit the menu.  
Enter  
F9  
Press this key to choose a  
highlighted option from a menu  
Press this key if you want to reload  
the current settings for a line  
F10  
Press this key if you want to load  
the factory default settings from the  
selected brackets.  
Changing Parameter Settings  
In the Setup menus, the configuration information that  
you can change is enclosed in brackets like these: [ ].  
You cannot change any information that is not  
enclosed in brackets. Use the up- or down- arrow  
keys to highlight options then press Enter to display a  
menu. When changing the setting of a particular  
parameter, highlight the setting then use the left- or  
right- arrow key to change the setting. Refer to the  
Configuration/Setup Utility help for details on the  
configurable parameters in each menu.  
General Information 13  
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Save Settings  
After changing any parameter in the Setup  
Configuration setting, return to Configuration/Setup  
main menu and select Save Settings to save all the  
settings you have changed.  
Restore Settings  
If you select this option, it will change the current  
settings to their previous values. Then, press Enter  
to continue.  
Loading Default Settings  
The computer is already configured for use. The  
original configuration settings, also called factory or  
default settings, are stored in the CMOS. Setup  
includes an option Load Default Settings that lets you  
reload the original configuration at any time.  
To load the default settings, follow these steps:  
1. Use down-arrow key to select load default settings.  
A dialog box appears confirming if you want to  
load the default settings.  
2. Use the left-arrow key to select Yes, then press  
Enter.  
3. Press Esc to exit Setup.  
A dialog box appears confirming if you want to  
save the settings (in this case, the default settings  
that you reloaded).  
4. Use the left-arrow key to select Yes, then press  
Enter to save the changes in Setup Configuration.  
You must load the Setup default settings in the  
following instances:  
When you replace the system battery.  
When you customize the system configuration  
settings and some resource assignments conflict  
causing the computer to stop responding.  
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Exiting Setup  
Press Esc to return to the Main Menu when you have  
finished viewing settings and making changes. From  
this location, you can exit Setup and save your  
changes or exit without saving your changes.  
Follow these steps to exit Setup:  
1. From the main menu, press the Esc key.  
2. The Exit Setup dialog box appears. If you have  
made changes in the parameter settings, it will  
contain an option for saving your changes.  
- If you would like to save your changes, press the  
down-arrow key to select the option “Yes, save  
and exit the Setup Utility.”, then press Enter to  
save your changes and exit Setup.  
- If you do not want to save your changes, press  
the down-arrow key to select the option “No, exit  
the Setup Utility without saving.”, then press En-  
ter to exit Setup without saving.  
- If you do not want to exit the setup utility, press  
the down-arrow key to select the option “No, re-  
turn to the Setup Utility” then press Enter.  
Viewing System Information, and  
Product Data  
To view general hardware information about your  
computer, select the System Summary option from  
the Setup main menu. The items displayed in the  
System Information menu are not configurable.  
Setup automatically updates this menu when you do  
either of the following:  
Add or change hardware on your computer  
Make changes to other menus in Setup and save  
those changes  
To view the computer information such as the model  
number, system board identifier, serial number,  
system UUID, and BIOS version and date, select the  
Product Data option from the Setup main menu. Like  
in the System Information menu, the items displayed  
are not configurable.  
General Information 15  
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Devices and I/O ports  
If you install USB devices, video, IDE drives, audio, or  
network drive, BIOS auto-detects the presence of  
these devices. Enter Setup to identify or verify the  
type of drive installed in the computer.  
If you want to change any drive setting, select  
Devices and I/O Ports from the main menu. The  
Devices and I/O Ports menu appears showing the  
USB boot device parameters.  
USB Boot device  
The item Universal Serial Bus (USB) parameter  
displayed in the Devices and I/O Ports option is not  
configurable and the default setting is “Detected“.  
Video Setup  
Active Video  
This item displays the onboard video controller  
chipset information. It is not configurable.  
Shared System Memory  
Set the amount of system memory (512 KB or 1 MB)  
to be reserved for the integrated video. Operating  
systems that use SVGA will dynamically allocate  
additional system memory for the integrated video.  
The integrated video requires a minimum of 512KB of  
shared system memory. POST will allocate 1 MB of  
shared video memory if no other video memory is  
detected.  
Select Active Video  
The parameter allows you to select PCI or integrated.  
When the computer is started, it will select the video  
that is active. If the selected video is not available,  
the computer will select a default video. The default  
is set to “PCI“.  
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Palette Snooping  
The default setting is “Disabled“. It is necessary to  
enable palette snooping if your system has a video  
multimedia adapter installed and incorrect colors are  
displayed on screen, and also your system has a PCI  
video adapter installed that supports palette  
snooping.  
Video Interrupt  
This parameter allows you to select “Disabled” for the  
video interrupt if your video adapter does not require  
an interrupt and your system is having problems  
assigning interrupts to other adapters that need them.  
The default is set to “Enabled“.  
IDE Drive Setup  
The Device and I/O Ports menu includes four IDE  
drive items that allow you to configure the hard disk  
drives and the CD/CD-R/W-ROM drive. Selecting any  
one of these items displays a submenu with details  
on a particular IDE drive.  
The IDE drive items are identified as follows:  
IDE Hard Disk Drive 0  
IDE Hard Disk Drive 0 is attached to IDE connector 1  
on the system board. This is the hard disk that  
comes pre-installed with your computer.  
Size:  
It is not configurable. The BIOS will auto-detect the  
size from the hard disk drive.  
IDE Performance:  
The “High Performance“ mode allows IDE devices  
attached to the system board IDE controller to  
utilize any performance enhancement features the  
device may support. If an IDE device attached to  
the system board IDE controller does not function  
properly or causes other IDE devices attached to  
the same controller not to function properly, set  
this field to the “Compatible“ mode. This will allow  
other IDE hard disk drives or IDE devices which do  
not follow the ATA IDE specification to function  
properly. The default is set to “High  
Performance“.  
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IDE Read Prefetch:  
The default setting is “Disabled”. Read prefetch  
can improve performance of your system. IDE  
CD-ROM devices and some operating systems  
may not work properly with this feature “Enabled”.  
IDE Hard Disk Drive 1  
IDE Hard Disk Drive 1 (if installed) is attached to IDE  
connector 1 on the system board and is set as the  
slave device.  
Size:  
The default is set to “Not installed“.  
IDE CD-ROM Drive 2  
IDE CD-ROM Drive 2 is attached to IDE connector 2  
on the system board and a pre-installed CD-ROM  
drive is connected here.  
IDE Performance:  
The “High Performance“ mode allows IDE devices  
attached to the system board IDE controller to  
utilize any performance enhancement features the  
device may support. If it does not function  
properly, set this field to the “Compatible“ mode.  
The default is set to “High Performance“.  
Audio Setup  
Audio Support:  
This parameter enables or disables the onboard  
audio controller chipset. This item does not appear  
in the menu if there is no physical audio chipset on  
the system board. The default setting is Enabled.  
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Network Setup  
Alert on LAN  
When Enabled, the Alert on LAN feature allows  
POST errors, environmental Conditions, and  
operating system hang conditions to be reported to  
the Network Administrator. Alert on LAN is enabled  
by Alert on LAN application software. The parameter  
is not configurable and is set to “Disabled”.  
Preboot Execution Environment Base Code  
This parameter allows you to enable or disable the  
Preboot Execution Environment (PXE) base code  
feature. Select whether to load the (PXE) Version 2.0  
Base Code image when a PCI network device is  
detected. The Base Code may be needed to allow  
startup from some PCI network devices. The default  
setting is “Disabled“.  
PCI Boot Entry Vector Startup  
The parameter allows you to select whether to allow  
PCI network devices which provide a Boot Entry  
Vector (BEV) to be added to the startup sequence.  
The default is set to “Enabled“.  
Startup Options  
From the Setup main menu, select Start Options to  
view or change start-up configuration settings.  
Startup Sequence  
The system can load the operating system from one  
of several devices. The startup sequence  
determines the order of bootable devices the system  
attempts to load the operating system from. When  
the previous startup boot device is set to disabled, the  
rest of following boot sequence will not be available to  
configure and the value will be “Disabled“.  
Primary Startup Sequence  
The primary startup sequence is used when the  
system is powered on by the power switch. The  
startup sequence will be USB Boot Device, CD-ROM,  
Hard Disk 0, Network and Disabled.  
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Automatics Power-on Startup Sequence  
This item allows you to select enabled if you want to  
use a different startup sequence when your system is  
started using the Automatic Power-On features.  
First Startup Device:  
The default is set to Network.  
Second Startup Device:  
The default setting is Hard Disk 0.  
Third Startup Device:  
The default is Disabled.  
Fourth Startup Device:  
When the previous startup device is set to  
disabled, the fourth startup device will become un-  
configurable. The default value is “Disabled“.  
Error Startup Sequence  
Select “Disabled“ if you want to start Setup whenever  
a POST (Power-On Self Test) error occurs. Select  
other options such as Network, Primary, Automatic, or  
Disabled if you want to bypass Setup and use a  
different startup sequence when a POST error  
occurs. You will still be able to enter Setup using the  
F1 key or on the POST error menu. The default is  
set to “Network“.  
Power-On Self Test  
When set to “Quick”, which is the default, this  
parameter allows the system to boot faster by  
skipping some power-on self-test (POST) routines.  
Power-On Logos  
This parameter enables or disables to display the IBM  
logo function. When set to “Enabled”, which is the  
default, BIOS is in graphical mode and displays the  
IBM logo while booting. If it is set to Disable, the  
system will not display the logo on the screen.  
Option Key Display  
This option controls the prompt of the system  
software option keys (such as the F1 and Esc keys)  
when the system is turned on. This may or may not  
affect the function of a specific key. Select “Enabled“  
to display the prompts.  
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Network Boot Prompt  
This option allows the user to boot from the Network  
by pressing F12 after the system is turned on.  
Pressing F12 will override the normal boot sequence.  
Select “Enabled“ to display the F12 prompt.  
Power-On Status  
This option controls the display of the memory count,  
system check points, and beeps when the system is  
turned on. Select “Enabled” to allow this information  
to be displayed. Select “Disabled“ which is the  
default value to turn these off.  
Virus Detection  
The system has a built-in virus detection program.  
The virus detection program runs at boot time, and  
can be enabled or disabled from this field. The  
default is set to “Disabled“.  
Date and Time  
From the Configuration/Setup main menu, select the  
Date and Time option to view or change the system  
clock from the Date and Time menu. If you want to  
change the system date, enter the date in the format  
shown on the screen.  
If you change the time, enter the time in 24-hour  
format (hours, minutes, seconds). For example:  
- 12 midnight is 00:00:00  
- 12 noon is 12:00:00  
- 1 p.m. is 13:00:00  
When setting date and time, press the up- or down-  
arrow key to highlight a field. The date and time are  
saved as you type it.  
System Security  
Enhanced Security Enabled/Disabled  
Enhanced Security can be Enabled or Disabled only  
while flashing the system BIOS. Enhanced Security  
Enabled gives the highest level of protection of  
system resources by locking the Administrator  
password and startup sequence in the EEPROM.  
This level of security may not be desirable in  
networking environment.  
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Security Profile by Device  
IDE Controller  
All devices attached to the system board IDE  
controller can be disabled using this field. When  
disabled, IDE hard disk drives, IDE CD-ROM drives  
or any other devices attached to the system IDE  
controller will not appear in the system configuration.  
Password to request before booting  
There are three options for the following selections.  
First, User, which is the Power-on password. Second,  
Administrator, which allows the system to boot from  
the device. Third, Not Required, which means a  
password is not required to boot from the device.  
This option may be desired if the operating system  
meets the security.  
Remote Administration  
Select “Enabled“ to allow remote administration, such  
as the POST/BIOS Update Utility, to be run from a  
remote system without requiring entry of your  
administrator password.  
Power-On password  
Select this parameter and press the down arrow key  
to display the Power-on Password window. In this  
window, you can set up a password to restrict the use  
of your computer. You can also change or remove the  
password.  
If you set up a power-on password, you must type this  
password each time you turn on your computer. If you  
do not key in the correct password, you cannot use  
your computer. You must also type this password if  
you want to enter Setup.  
Setting a Power-On Password  
1. Press F1 to Enter Configuration/Setup Utility.  
2. From the Setup main menu, select System  
Security and then Power-On Password.  
3. Highlight the Power-On Password parameter and  
press the Enter key to display the Power-On  
Password window.  
4. Type a password consisting of up to seven  
characters, then press Enter.  
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5. Retype the password then press Enter.  
6. Press Enter again to confirm the setting of the  
password. Pressing Esc aborts the password  
setting.  
After pressing Enter, the Power-On Password  
window disappears. The Power-On Password  
parameter automatically sets to Present.  
7. Press Esc to return to Setup main menu.  
8. Press Esc to exit Setup and reboot the system.  
Answer Yes when prompted to save settings.  
The next time you turn on the system, you will be  
prompted to enter your Power-On Password. If you  
press F1 during POST to enter Setup, you must key  
in the password as well.  
If you were not able to set a password after  
performing the above procedure, or should you  
encounter any error message when setting a  
password, refer to “Power-On Password” on page 8  
about how to set the hardware jumper to clear  
password check.  
Changing the Power-On Password  
1. Enter Setup.  
2. Key in your current password when prompted.  
3. From the Setup main menu, select System  
Security, then Power-On Password Options.  
4. Type in a new password then press Enter.  
5. Retype the new password then press Enter.  
6. Press down-arrow key to highlight Change  
Power-On Password again to confirm changing  
the password.  
7. Press Esc twice to return to the Setup main menu.  
8. Press Save Settings to save the password and  
press Exit to exit Setup menu, and then reboot the  
system.  
If you change your mind and decide not to change  
your password, just answer No when return to  
CMOS settings to reset the Power-On Password.  
Delete Power-On Password  
1. Enter Setup and select System Security Options,  
then Power-On password Options.  
2. Press the up- or down arrow key to select “Delete  
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Power-On Password”.  
3. Press Esc to return to Setup main menu.  
4. Select Save Settings and Exit Setup to save and  
exit Setup and reboot the system.  
Administrator Password  
For the basic administrator password setting, follow  
the same rule with Power-On Password to set up,  
change, or delete a password.  
Require Administrator Password when flashing  
If it is set to No, the Administrator password will not  
be required when updating the system software. The  
default setting is “Yes”.  
Power-On Password Changeable by User  
This parameter enables you to change or not to  
change the Power-On Password with the  
administrator password set. The default is “No”.  
Require Power-On Password on Warm boot  
When set to “Yes”, the Power-On Password will be  
required whenever the system is restarted. If you  
select No, the Power-On Password will only be  
required when the system is started with a cold boot.  
Adapter ROM Security  
If set to”Yes”, the keyboard will be locked during  
adapter ROM initialization. This can be used in  
conjunction with an Administrator password to  
prevent the use of adapter ROM based utilities. The  
default is set to “No“.  
Asset ID  
This enables wireless RF communication for Asset  
ID. The default is “Disabled“.  
Advanced Setup  
IMPORTANT:  
Items on the following menus control  
advanced hardware features. If they are  
configured incorrectly, the system might  
malfunction.  
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PCI Control  
PCI Parity  
The parameter allows you to enable or disable parity  
checking of data across the PCI bus. Some adapters  
do not generate parity and will require this option set  
to disable. The default is set to “Enabled”.  
Plug and Play Control  
Plug and Play Operating System  
Select “Yes”, if you are experiencing POST errors  
numbered 185x and your system will be booting a  
Plug and Play compliant operating system.  
The 185x errors are caused by the system being  
unable to configure all adapters and devices in the  
system because of conflicting resource assignments.  
Selecting “Yes“ allows the configuration of Plug and  
Play devices not required for booting to be performed  
by the operating system, which can better manage  
the resource assignments of Plug and Play adapters  
and devices. The default is “No“.  
Processor Control  
It will indicate the Intel processor ID number and  
microcode revision date. This information is not  
configurabled.  
Power Management  
Wake on LAN  
Select “Enabled” to allow your system to power-on in  
response to LAN wake up requests if the network  
adapter in your system supports this feature. The  
default is set to “Disabled“  
Startup Sequence  
When the Wake on LAN is set to “Enabled“, Startup  
Sequence will become configurable. Select the start-  
up sequence you want to use for this type of  
power-on event. If you select “Automatic“, make  
sure that the Automatic Power-On Start-up Sequence  
is set to “Enabled“; otherwise the system will use the  
“Primary“ startup sequence.  
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ACPI BIOS IRQ  
This field controls what IRQ the Advanced  
Configuration and Power Interface (ACPI) will use.  
This should only be changed to resolve a conflict with  
an ISA Legacy adapter.  
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Specifications  
Dimension (width x depth x height)  
System unit: 88mm x 305 mm x 392 mm  
Weight  
System unit: 6.3 kg (14 lb)  
Environment  
Temperature for system unit:  
Power-on: 10° to 35°C (50° to 95°F)  
Power-off: -10° to 60°C (14° to 140°F)  
Humidity for system unit:  
Power-on: 20% to 80%  
Power-off: 20% to 80%  
Power consumption  
System unit: Maximum 95 Watts  
Electrical input  
Input voltage for system unit (Sine-wave input is  
required)  
Low Range: 90 Vac to 132 Vac  
High Range: 180 Vac to 264 Vac  
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Operating Requirements  
All machines require two power inputs: one for the  
system unit and one for the monitor display.  
The system units come with a voltage selector switch,  
allowing selection of voltage of either 115 Vac or 230  
Vac. This switch must be in the 230 Vac position  
when the machine is plugged into a 230 Vac electrical  
outlet.  
The required power input for the monitor (Not  
included with some models) shipped with the system  
unit is auto-sensing type and does not require any  
voltage switch adjustment.  
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Check Procedures  
Introduction .......................................................... 30  
Start ..................................................................... 31  
Index of Symptoms, Messages, Error Codes,  
or Beeps ............................................................... 36  
Troubleshooting ................................................... 55  
Factory-Installed Storage Devices ................ 55  
Audio (Not Supported by Diagnostics Program) .. 59  
CD-ROM Drive ..................................................... 62  
Memory ................................................................ 64  
Keyboard .............................................................. 65  
Mouse .................................................................. 66  
Power Supply ....................................................... 68  
Monitor ................................................................. 70  
Undetermined Problems ...................................... 72  
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Introduction  
This chapter contains the check procedures used to  
diagnose the causes of product failures. The  
diagnostic information consists of:  
Start: This is the starting point for any diagnostic  
action. Based on high-level symptoms, the check  
procedure directs you to more detailed procedures to  
help resolve machine failures.  
Index of Symptoms, Messages, Error Codes, or  
Beeps: The tables for BIOS Error Messages, Codes,  
Beeps and Error Symptoms list along with their  
probable causes, and direct you to the applicable  
check procedures to help resolve machine failures.  
These tables also list the field replaceable units  
(FRUs) most likely to cause a particular problem.  
Check Procedures: When the Start check  
procedure or the Index of Symptoms, Messages,  
Error Codes, or Beeps tables point you to a specific  
check procedure, proceed to that section. If there are  
any notes or instructions at the top of the page, read  
them before you begin with the procedure. Carefully  
read each step of the check procedure and perform  
the steps as instructed. If you do not remember the  
location of a specific part or test point, or an  
adjustment or removal procedure, see the chapter  
that contains that information. Always return to the  
check procedure after you do this. In some cases,  
you are referred to other check procedures to detect  
the cause of the failure.  
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Start  
This is the entry point for all check procedures. The  
check procedures use failure symptoms, Power-On  
Self Test (POST) error codes, or beeps to help  
determine the defective field replaceable unit (FRU).  
Follow the suggested check procedures or use the  
diagnostics CD to determine the problem FRU.  
IMPORTANT: Replace FRUs ONLY when it is  
determined that the error is not a result of  
software, loose contacts, or dirty component  
surfaces. Any FRU change should be verified  
by running a complete test (“Diagnostics - Run  
Normal Test” in PC-Doctor diagnostics  
program).  
NOTE: The disagnostic program diskette can be  
created from the Recovery CD if the user has a  
USB diskette drive attached.  
The diagnostic program diskette diskette should be  
used ONLY with 6644/6645/6646 Service Level A  
(SL-A) IBM Personal Computers. Do not use this  
diskette on other models.  
POST error codes and error messages are displayed  
on the screen after the IBM logo. Meanwhile, error  
beeps could be issued to help diagnose system  
problem. Please refer to “Index of Symptoms,  
Messages, Error Codes, or Beeps” on page 36 for  
additional help.  
All voltages in the check procedures are positive  
unless otherwise indicated. Use frame ground for all  
voltage checks unless otherwise specified.  
NOTE: If the check procedures instruct you to replace  
a FRU and the error message persists, an  
option adapter card might be causing the  
failure. Remove all option adapter cards, one  
at a time, until the error changes or the  
problem is no longer apparent. Replace the  
last option adapter card removed.  
The hard disk drive contains pre-loaded software.  
Refer to “Software Recovery Procedure” on page  
102, to reinstall the original software. Be sure to  
reload the software on the primary hard disk drive  
(Drive C) when replacing it.  
IMPORTANT: The drives in the system you are  
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servicing may have been rearranged, or the  
drive startup sequence has changed. Be  
extremely careful during write operations, such  
as copying, saving, or formatting. Data or  
programs can be overwritten if you select an  
incorrect drive. Ask the customer to back up  
any additional software from the hard disk  
drive before you reload the software.  
How to Diagnose Combined FRUs: If an adapter or  
device consists of more than one FRU, any of the  
FRUs might cause an error code. Before replacing  
the device or adapter, remove the FRUs one by one  
to see if the symptoms change.  
If a newly replaced FRU does not correct the  
problem: If you have reached this point of the check  
procedures and were instructed to replace a FRU but  
doing so did not correct the problem, reinstall the  
original FRU and go through “Start” again.  
If you want to print a copy of a BIOS Setup Utility  
screen to an attached printer, press Print Screen key  
while the following screen is displayed.  
READ THE FOLLOWING:  
Human Error is a cause for concern when applied  
to check procedures. It exists in every first time  
set of analysis procedures. It is therefore  
essential for effective and time-efficient servicing  
that each stage of every procedure be verified.  
(For example: When a symptom is found, or when  
a symptom appears to have been cured; the  
preceding steps should be repeated for accuracy  
of analysis.)  
001 - START  
To begin, note the following:  
Disable the setting of “Fast POST Mode” in BIOS  
Setup.  
To disable or reset the power-on password, see  
“Power-On Password” on page 8.  
Disconnect all external cables and devices from  
the system unit, except for the keyboard, mouse,  
and monitor.  
Power off the system unit (unplug the power cord)  
before moving it or when replacing FRUs.  
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Remove all adapter cards, except for the factory-  
installed adapter cards.  
Disconnect all drives except:  
- Hard disk drive  
- IBM factory-installed devices (such as a CD-  
ROM drive)  
Ensure that all power cords and cables are  
connected properly.  
Ensure that the monitor brightness and contrast  
controls are not turned down.  
Power on the system unit.  
NOTE: Some monitors have a detachable system I/O  
signal cable between the monitor and the  
system unit. In this case, check this signal  
cable before replacing the unit. See “Monitor  
Port Signals” on page 117 for pin identification.  
Ensure correct monitor refresh rate.  
Note any symptoms, messages, error codes, or  
beeps.  
Make sure that there are no CD in the drives.  
002 - DOES AN IBM LOGO SCREEN APPEAR?  
(YES, READ AHEAD. NO, GO TO STEP 004.)  
Insert diagnostics CD in the CD-ROM drive or the  
the diagnostic diskette in a USB attached diskette  
drive.  
003 - DOES SYSTEM LOAD THE DIAGNOSTICS  
PROGRAM ? (YES, READ AHEAD. NO, GO TO  
STEP 004.)  
Follow the instructions on the screen and select  
Utility from the diagnostics program menu.  
Select Tech Support Form from the menu, press  
F5 to execute, then generate a system  
configuration report.  
Compare the system configuration list with the  
actual devices installed in system.  
NOTE: If necessary, remove the machine cover and  
visually compare the devices installed in  
system to those shown in the system  
configuration report.  
Go to step 006.  
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004 - DO ANY MESSAGES, ERROR CODES, OR  
SYMPTOMS APPEAR? (YES, READ AHEAD. NO,  
GO TO STEP 005)  
Go to “Index of Symptoms, Messages, Error  
Codes, or Beeps” on page 36.  
End.  
005 -  
If the keyboard responds incorrectly, go to  
“Keyboard” on page 65.  
If monitor problems appear, such as jittering,  
shifting, or being out of focus, go to “Monitor” on  
page 70.  
006 - DOES THE SYSTEM CONFIGURATION  
REPORT CORRECTLY IDENTIFY THE DEVICES  
INSTALLED IN SYSTEM? (YES, READ AHEAD.  
NO, GO TO STEP 007.)  
Select Diagnostics from the diagnostics program  
menu.  
Select and execute Run Normal Test.  
- Go to step 008.  
007 -  
The system configuration report shows only those  
devices supported by the diagnostics CD.  
If a device is missing from the list and is not factory  
installed, refer to the service manual provided for  
that device.  
008 - DO THE DIAGNOSTICS FINISH WITHOUT  
ANY ERRORS? (YES, READ AHEAD. NO, GO TO  
STEP 009.)  
If the Diagnostics \ Run Normal Test did not detect  
a failure but the system still indicates a failure:  
- Check all adapter card jumper settings.  
- Check all adapter card switch settings.  
- Check all adapter card cables and connectors.  
Make sure that all of the above are set correctly  
and show the correct voltages and continuity. Re-  
place any defective cables or adapter cards. See  
“Parts/Test Point Locations” on page 103.  
- Run the Diagnostics \ Run Normal Test again.  
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- If an error or other symptom is displayed, go to  
“Index of Symptoms, Messages, Error Codes, or  
Beeps” on page 36.  
- If no error can be detected or the symptom is in-  
termittent, go to “Undetermined Problems” on  
page 72.  
End  
009 -  
If the last test stops and you cannot continue, first  
make sure all switches, power connectors, cables,  
and jumpers are set correctly and show the correct  
voltages and continuity.  
Take note of any messages, error codes, beeps, or  
new symptoms. Go to “Index of Symptoms,  
Messages, Error Codes, or Beeps” on page 36.  
If there is no error symptom or the error symptom  
is intermittent, go to “Undetermined Problems” on  
page 72.  
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Index of Symptoms, Messages, Error  
Codes, or Beeps  
How to Use Error Messages: Use the messages,  
error codes, and beeps combinations that occur to  
diagnose failures. If more than one failure occurs,  
begin the diagnosis from the first failure that  
appeared. The cause of the first failure can result in  
false messages, error codes, or beeps. If you did not  
receive any messages, error codes, or beeps, see if  
the symptom is listed in “Table 2-3 Error Symptoms  
List” on page 48.  
IMPORTANT: When you have deemed it necessary  
to replace a FRU, and have done so, you must  
run a total system check to ensure that no  
other activity has been affected by the change.  
This system check can be done through the  
diagnostics program (Select Diagnostics, then  
select and execute Run Normal Test from PC-  
Doctor).  
POST: Some diagnostic aids are resident in the  
machine, such as the Power-On Self Test (POST).  
The machine performs the POST each time it is  
powered on. Use this information throughout the  
diagnostic procedures. The POST is a series of  
system checks and initializations that verify the  
correct operation of the base system.  
After a successful POST, the system attempts to load  
operating system. The system can be customized for  
different startup (boot) methods by the BIOS Setup  
Utility. “Date and Time” on page 21.  
The system's default startup sequence automatically  
looks for the operating system files in the hard disk if  
these files are not found in the CD.  
IMPORTANT: Remember that POST does not test all  
areas, but only those that allow the system to  
operate well enough to run the diagnostics  
program.  
Table 2-1 lists BIOS error codes, messages and their  
possible causes. Table 2-2 lists BIOS beeps and their  
possible causes. Table 2-3 lists error symptoms and  
their possible causes. The most likely cause is listed  
first. Make sure you complete all items in the cause or  
36 IBM Desktop System HMM  
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“Action/FRU” column. When servicing a system,  
always begin with “Start” on page 31.  
If you are unable to correct the problem using these  
two index tables, go to “Undetermined Problems” on  
page 72.  
NOTE:  
1. If an error message and incorrect audio response  
occur, diagnose the error message first.  
2. If you cannot run the diagnostics program tests but  
did receive a POST error code and message, use  
“Table 2-1 POST Error Codes and Messages List”  
on page 38 to diagnose system problems.  
3. If you cannot run the diagnostics program tests but  
did receive a POST error beeps, use See “Table 2-  
2 BIOS Error Beeps List” on page 45 to diagnose  
system problems.  
4. If you did not receive any error message, look for a  
description of your error symptoms in Table 2-3  
Error Symptoms List” on page 48.  
IMPORTANT: Check all power supply voltages,  
switch, and jumper settings before you replace  
the system board. Also check the power supply  
voltages if you have a “system no-power”  
condition.  
5. If you are unable to correct the problem by using  
the “BIOS Error Codes, Messages, and Beeps  
List” table and “Error Symptoms List” table, go to  
“Undetermined Problems” on page 72.  
Check Procedures 37  
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Table 2-1 POST Error Codes and Messages List  
To diagnose a problem, first find the BIOS error  
messages or codes in left column. If directed to a  
check procedure, replace the FRU indicated in the  
check procedure. If no check procedure is indicated,  
the first Action/FRU listed in right column is the most  
likely cause.  
NOTE:  
BIOS Error Codes,  
Messages  
Action/FRU  
0101  
Enter BIOS Setup and load  
the default settings.  
Timer Tick Interrrupt Error  
0102  
RTC Battery.  
System Board.  
Timer 2 Test Error  
0103  
Enter BIOS setting to load  
default settings:  
Processor Speed Set Too  
High  
1. Proper speed for  
processor. Speed should  
be a multiple of the  
original processor.  
Reset the jumper.See  
“Power-On Password” on  
page 8.  
Processor.  
0106  
System board  
Diskette Controller Error  
0114  
Adapter card  
System board  
Option ROM checksum  
0129  
Processor  
L1 Cache Error  
System board  
0131  
System board  
POST Detected a Planar  
Voltage is Out of Range  
0135  
Re-connect processor fan  
cable.  
Processor Fan Error  
System board  
System board  
0136  
Hardfile Fan Error  
0151  
Enter BIOS Setup and load  
the default settings.  
Real Time Clock Error  
0161  
RTC Battery.  
System Board.  
Real Time Clock Battery  
Error  
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Table 2-1 POST Error Codes and Messages List  
To diagnose a problem, first find the BIOS error  
messages or codes in left column. If directed to a  
check procedure, replace the FRU indicated in the  
check procedure. If no check procedure is indicated,  
the first Action/FRU listed in right column is the most  
likely cause.  
NOTE:  
BIOS Error Codes,  
Messages  
Action/FRU  
0162  
Re-connect the cables.  
Adapter card  
Drives  
Invalid Configutation  
Information  
Power supply  
System board  
0163  
Ensure the time set in BIOS  
Setup is correct.  
Time of Day not set  
0164  
Enter BIOS Setup and load  
the default settings.  
Memory Size Does Not  
Match CMOS  
DIMMs  
System board  
0166  
BIOS version.  
Boot Block Checksum Error BIOS ROM  
0167  
Enter BIOS setting to load  
default settings:  
No Processor Update Found  
Error  
1. Proper speed for  
processor. Speed should  
be a multiple of the  
original processor.  
Reset the jumper.See  
“Power-On password” on  
page 22.  
Processor  
0168  
Enter BIOS Setup and load  
the default settings.  
ALert-on-LAN is Inoperative  
Adapter card  
System board  
0175  
System board  
Bad EEPROM CRC #1  
0176  
Enter BIOS Setup and load  
the default settings.  
System Tampered  
System board  
System board  
0177  
Inventory Violation  
Check Procedures 39  
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Table 2-1 POST Error Codes and Messages List  
To diagnose a problem, first find the BIOS error  
messages or codes in left column. If directed to a  
check procedure, replace the FRU indicated in the  
check procedure. If no check procedure is indicated,  
the first Action/FRU listed in right column is the most  
likely cause.  
NOTE:  
BIOS Error Codes,  
Messages  
Action/FRU  
0183  
Enter Administrator  
password  
PAP is Required  
0184  
Enter new password  
Asset control Antenna not  
Detected  
0186  
System board  
Secure Data can Not be  
Recovered  
0187  
Clear Administrator  
password  
Bootseq and Administrator  
Password Cleared  
System board  
0190  
If the code does not clear,  
replace the system board.  
System Tampered Reset  
0191  
Enter Administrator  
password  
Security Hardware Reset  
0192  
Check Setup  
System board  
Security Hardware Tamper  
Detected  
0193  
Security Hardware  
Removed  
0194  
Information for the system  
administrator  
RFID Antenna Removed  
0195  
Error can be cleared in  
Setup  
RFID Antenna Installed  
Antenna  
System board  
0201  
DIMMs  
Memory Error  
I/O channel memory  
System board  
40 IBM Desktop System HMM  
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Table 2-1 POST Error Codes and Messages List  
To diagnose a problem, first find the BIOS error  
messages or codes in left column. If directed to a  
check procedure, replace the FRU indicated in the  
check procedure. If no check procedure is indicated,  
the first Action/FRU listed in right column is the most  
likely cause.  
NOTE:  
BIOS Error Codes,  
Messages  
Action/FRU  
0203  
DIMMs  
ECC Memory Required  
0204  
System board  
Memory Test Failed  
0205  
System board  
Memory Conflict Error  
0206  
Reconnect Memory  
Memory Configuration Error DIMMs  
0207  
System board  
Memory Continuity Error  
0229  
Processor  
L2 Cache Error  
System board  
0262  
Enter BIOS and load default  
settings.  
DRAM Parity Configuration  
DIMM  
System board  
0301  
Re-connect keyboard.  
Keyboard Error  
0303  
Enter BIOS and load default  
settings.  
Keyboard  
Keyboard Controller Error  
System Board  
0604  
Reconnect diskette drive  
Diskette drive  
Diskette Drive Error  
0605  
System board  
Diskette Unlocked Problem  
0662  
Diskette Drive Configuration  
0762  
Enter BIOS and load default  
settings.  
Coprocessor Configuration  
System board  
1762  
Hard disk drive  
System board  
Hard Disk Configuration  
Check Procedures 41  
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Table 2-1 POST Error Codes and Messages List  
To diagnose a problem, first find the BIOS error  
messages or codes in left column. If directed to a  
check procedure, replace the FRU indicated in the  
check procedure. If no check procedure is indicated,  
the first Action/FRU listed in right column is the most  
likely cause.  
NOTE:  
BIOS Error Codes,  
Messages  
Action/FRU  
1780  
Reconnect hard disk cables.  
Hard disk drive  
Fixed Disk Configuration  
Error  
System board  
1780  
Reconnect hard disk cables  
Fixed Disk 0 Error  
1780  
Enter BIOS setting to load  
default settings:  
1. Proper speed for  
processor. Speed should  
be a multiple of the  
original processor.  
Fixed Disk Error  
1781  
Fixed Disk 1 Error  
1782  
Hard disk drive  
System board  
Fixed Disk 2 Error  
1783  
Fixed Disk 3 Error  
1800  
Run Setup, verify PCI  
Run Diagnostics  
No More IRQs available  
1880  
PCI adapter card  
No More IRQs available  
1801  
Check Setup  
No More Room for Option  
ROM  
Run Diagnostics  
Adapter Cards  
1881  
Make sure BIOS is at latest  
level  
No More Room for Option  
ROM  
System board  
1802  
Check Setup  
No More I/O Space  
Available  
Run Diagnostics  
Adapter Cards  
1882  
Make sure BIOS is at latest  
level  
No More I/O Space  
Available  
System board  
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Table 2-1 POST Error Codes and Messages List  
To diagnose a problem, first find the BIOS error  
messages or codes in left column. If directed to a  
check procedure, replace the FRU indicated in the  
check procedure. If no check procedure is indicated,  
the first Action/FRU listed in right column is the most  
likely cause.  
NOTE:  
BIOS Error Codes,  
Messages  
Action/FRU  
Check Setup  
1803  
No More Memory  
(above 1 MB) available  
Run Diagnostics  
Adapter Cards  
1883  
Make sure BIOS is at latest  
level  
No More Memory  
(above 1 MB) available  
System board  
1804  
Check Setup  
No More Memory  
(below 1 MB) available  
Run Diagnostics  
Adapter Cards  
1884  
Make sure BIOS is at latest  
level  
No More Memory  
(below 1 MB) available  
System board  
1805  
Check Setup  
Checksum Error or 0 Size  
Option ROM  
Run Diagnostics  
Adapter Cards  
1885  
Make sure BIOS is at latest  
level  
Checksum Error or 0 Size  
Option ROM  
System board  
1962  
Reconnect all the cables  
Devices  
No Boot Device Found  
Power supply  
System board  
2400  
Video adapter  
System board  
Display Adapter Error  
2462  
Optional video memory  
System board  
Monitor  
Video Configuration  
Check Procedures 43  
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Table 2-1 POST Error Codes and Messages List  
To diagnose a problem, first find the BIOS error  
messages or codes in left column. If directed to a  
check procedure, replace the FRU indicated in the  
check procedure. If no check procedure is indicated,  
the first Action/FRU listed in right column is the most  
likely cause.  
NOTE:  
BIOS Error Codes,  
Messages  
Action/FRU  
5962  
CD-ROM drive connectors/  
cables/jumpers  
CD-ROM drive  
IDE CD-ROM Configuration  
Power supply  
System board  
8601  
Re-connect keyboard and  
mouse.  
Pointing Device Error  
Enter BIOS Setup and load  
default settings.  
USB mouse  
USB keyboard  
System board  
8603  
Pointing device (mouse)  
System board  
Pointing Device has been  
Removed  
.
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Table 2-2 BIOS Error Beeps List  
To diagnose a problem, first find the BIOS error  
beeps in left column. If directed to a check  
procedure, replace the FRU indicated in the check  
procedure. If no check procedure is indicated, the  
first Action/FRU listed in right column is the most  
likely cause.  
NOTE:  
BIOS Error Beeps  
Action/FRU  
1-1-3  
Enter BIOS Setup and load  
the default settings.  
CMOS Write/ Read Error  
CMOS battery.  
System board.  
1-1-4  
Enter BIOS Setup and load  
the default settings.  
BIOS ROM Checksum  
Error  
CMOS battery.  
System board.  
1-2-1  
Enter BIOS Setup and load  
the default settings.  
Programmable Interval  
Timer Test Error  
System board.  
1-2-2  
Enter BIOS Setup and load  
the default settings.  
DMA initialization Error  
System board.  
1-2-3  
Enter BIOS Setup and load  
the default settings.  
DMA Page Register Write/  
Read Test Error  
System board.  
1-2-4  
Enter BIOS Setup and load  
the default settings.  
RAM Refresh Verification  
Error  
System board.  
1-3-1  
Insert the memory modules  
in the DIMM sockets  
properly, then reboot the  
system.  
1st 64K RAM Test Error  
Memory module. See the  
“Step 005” of “Memory” on  
page 64 to replace memory  
module.  
System board  
Check Procedures 45  
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Table 2-2 BIOS Error Beeps List  
To diagnose a problem, first find the BIOS error  
beeps in left column. If directed to a check  
procedure, replace the FRU indicated in the check  
procedure. If no check procedure is indicated, the  
first Action/FRU listed in right column is the most  
likely cause.  
NOTE:  
BIOS Error Beeps  
Action/FRU  
1-3-2  
Insert the memory modules  
in the DIMM sockets  
properly, then reboot the  
system.  
1st 64K RAM Parity Test  
Error  
Memory module. See the  
“Step 005” of “Memory” on  
page 64 to replace memory  
module.  
System board  
1-3-2  
Insert the memory modules  
in the DIMM sockets  
properly, then reboot the  
system.  
Wrong Data Gets From  
DIMM’s SPD  
DIMM.  
System board.  
1-3-2  
DIMM  
Incorrect DRAM Type  
2-1-1  
Hard disk drive  
Slave DMA Register Test In- System board  
Progress or Error  
2-1-2  
Hard disk drive  
System board  
Master DMA Register Test  
In-Progress or Error  
2-1-3  
Hard disk drive  
System board  
Master Interrupt Mask  
Register Test Error  
2-1-4  
Hard disk drive  
System board  
Slave Interrupt Mask  
Register Test Failure  
2-2-2  
System board  
Keyboard Controller Test  
Error  
2-3-2  
Enter BIOS Setup and load  
the default settings.  
Screen Memory Test In-  
Progress or Error  
System board.  
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Table 2-2 BIOS Error Beeps List  
To diagnose a problem, first find the BIOS error  
beeps in left column. If directed to a check  
procedure, replace the FRU indicated in the check  
procedure. If no check procedure is indicated, the  
first Action/FRU listed in right column is the most  
likely cause.  
NOTE:  
BIOS Error Beeps  
Action/FRU  
2-3-3  
Enter BIOS Setup and load  
the default settings.  
Screen Retrace Tests In-  
Progress or Error  
System board.  
3-1-1  
Enter BIOS Setup and load  
the default settings.  
Timer Tick Interrupt Test  
Error  
System board.  
3-1-2  
Enter BIOS Setup and load  
the default settings.  
Interval Timer Channel 2  
Test Error  
System board.  
3-1-4  
Enter BIOS Setup and load  
the default settings.  
Time-Of-Day Clock Test  
Error  
System board.  
3-2-4  
Enter BIOS Setup and load  
the default settings.  
Comparing CMOs Memory  
Size Against Actual  
System board.  
3-3-1  
Insert the memory modules  
in the DIMM sockets  
properly, then reboot the  
system.  
Memory Size Mismatch  
Occurred.  
Memory module. See the  
“Step 005” of “Memory” on  
page 64 to replace memory  
module.  
System board  
Check Procedures 47  
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Table 2-3 Error Symptoms List  
To diagnose a problem, first find the error symptom  
NOTE:  
in the left column. If directed to a check procedure,  
replace the FRU indicated in the check procedure. If  
no check procedure is indicated, the first Action/  
FRU listed in right column is the most likely cause.  
Error Symptoms  
Action/FRU  
Processor / Processor Fan  
Normally, the processor fan should be operative,  
and the processor clock setting should be exactly  
set to match its speed requirement before  
diagnosing any processor problems.  
NOTE:  
Processor fan does not run Ensure that the system is  
but power supply fan runs.  
not in power saving mode  
and the “Stop CPU clock in  
sleep state” is not set to  
Yes. See “Power  
Management” on page 5.  
With the system power on,  
measure the voltage of  
processor fan connector  
FN1. Its reading should be  
+12Vdc. See “System  
Board Jumpers and  
Connectors” on page 105.  
Processor fan.  
System board.  
Processor test failed.  
Processor.  
System board.  
System Board and Memory  
Ensure that the memory modules are installed  
properly and the contact leads are clean before  
diagnosing any system problems.  
NOTE:  
Memory test failed.  
See “Memory” on page 64.  
System board  
Incorrect memory size  
shown or repeated during  
POST.  
Insert the memory modules  
in the DIMM sockets  
properly, then reboot the  
system.  
Memory module. See the  
“Step 005” of “Memory” on  
page 64 to replace memory  
module.  
System board.  
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Table 2-3 Error Symptoms List (Continued)  
NOTE: To diagnose a problem, first find the error symptom  
in the left column. If directed to a check procedure,  
replace the FRU indicated in the check procedure. If  
no check procedure is indicated, the first Action/  
FRU listed in right column is the most likely cause.  
Error Symptoms  
Action/FRU  
System works but fails to  
enter power saving mode  
when the Power  
Management Mode is set to  
[Enabled], and power  
saving timer set in BIOS has  
elapsed.  
Enter BIOS Setup and load  
default settings.  
In Windows 2000, check  
settings in Power  
Management Property of  
Control Panel.  
Reload software from  
Recovery CD.  
System hangs before  
system boot.  
See “Index of Symptoms,  
Messages, Error Codes, or  
Beeps” on page 36.  
See “Undetermined  
Problems” on page 72  
System hangs after system Execute a system test  
boot.  
(“Diagnostics/Run Normal  
Test” in PC-Doctor  
diagnostics program) and  
set it to stop at “Halt on  
Error” to see the potential  
cause of the problem.  
“Undetermined Problems”  
on page 72.  
Blinking cursor only; system See “Start” on page 31.  
does not work.  
Diskette/IDE drive  
connection/cables  
Diskette/IDE disk drives  
See “Undetermined  
Problems” on page 72  
System board  
Hard Disk Drive  
NOTE: Ensure hard disk drive is configured correctly in  
BIOS Setup, cable/jumper are set correctly before  
diagnosing any hard disk drive problems.  
Hard disk drive test failed.  
Enter BIOS Setup and Load  
default settings.  
Hard disk drive cable.  
Hard disk drive.  
System board.  
Check Procedures 49  
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Table 2-3 Error Symptoms List (Continued)  
NOTE: To diagnose a problem, first find the error symptom  
in the left column. If directed to a check procedure,  
replace the FRU indicated in the check procedure. If  
no check procedure is indicated, the first Action/  
FRU listed in right column is the most likely cause.  
Error Symptoms  
Action/FRU  
Hard disk drive format error. Enter BIOS Setup and Load  
default settings.  
Hard disk drive cable.  
Hard disk drive.  
System board.  
Hard disk drive write error.  
Enter BIOS Setup and Load  
default settings.  
Hard disk drive.  
Hard disk drive LED fails to With the system power on,  
light, but system operates  
normally.  
measure the voltage of hard  
disk LED connector CNN1.  
The reading should be:  
CNN1  
HDD Idle/ Active  
pin-8  
pin-7  
Vdc  
+5 Vdc / --  
+5 Vdc / 0  
See “System Board  
Jumpers and Connectors”  
on page 105.  
Hard drive LED cable.  
CD-ROM Drive  
NOTE: Ensure CD-ROM drive is configured correctly in  
BIOS Setup, cable/jumper are set correctly and its  
laser beam is clean before diagnosing any  
CD-ROM drive problems.  
CD-ROM drive LED flashes CD may have dirt or foreign  
for more than 30 seconds  
before LED shut off.  
material on it. Check with a  
known good disc.  
Software asks to reinstall  
disc.  
CD is not inserted properly.  
CD is damaged.  
Software displays a reading  
CD error.  
CD-ROM drive LED doesn't CD-ROM drive  
come on but works  
normally.  
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Table 2-3 Error Symptoms List (Continued)  
To diagnose a problem, first find the error symptom  
in the left column. If directed to a check procedure,  
replace the FRU indicated in the check procedure. If  
no check procedure is indicated, the first Action/  
FRU listed in right column is the most likely cause.  
NOTE:  
Error Symptoms  
Action/FRU  
CD-ROM drive cannot load See “CD-ROM Emergency-  
or eject when the system is exit <option 1>” on page 114  
turned on and its eject  
and “CD-ROM Emergency-  
button is pressed and held. exit <option 2>” on page  
114.  
Disconnect all cables from  
CD-ROM drive except  
power cable, then press  
eject button to try to unload  
the disk.  
CD-ROM drive power.  
CD-ROM drive  
CD-ROM drive does not  
CD may have dirt or foreign  
read and there are no error material on it. Check with a  
codes or messages are  
displayed.  
known good disc.  
Ensure that the CD-ROM  
driver is installed properly.  
See “CD-ROM Drive” on  
page 62.  
CD-ROM drive.  
CD-ROM drive can play  
audio CD but no sound  
output.  
Ensure that the headphone  
jack of the CD-ROM has an  
output, then check if the  
audio cable from CD-ROM  
drive to system board CN12  
is connected properly. See  
“System Board Jumpers  
and Connectors” on page  
105.  
Turn up the sound volume.  
Speaker power/connection/  
cable.  
CD-ROM drive.  
Check Procedures 51  
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Table 2-3 Error Symptoms List (Continued)  
NOTE: To diagnose a problem, first find the error symptom  
in the left column. If directed to a check procedure,  
replace the FRU indicated in the check procedure. If  
no check procedure is indicated, the first Action/  
FRU listed in right column is the most likely cause.  
Error Symptoms  
Real-Time Clock  
Action/FRU  
Real-time clock is  
inaccurate.  
Ensure that the information  
in the Date and Time of  
BIOS Setup is set correctly.  
See “Date and Time” on  
page 21.  
Load default settings.  
CMOS battery.  
System board  
Video and Monitor  
Video memory test failed.  
Video adapter failed.  
Remove all non factory-  
installed cards.  
Load default settings  
(if screen is readable).  
System board  
Display problem:  
- Incorrect colors  
- No high intensity  
Monitor signal connection/  
cable.  
Monitor  
System board  
- Missing, broken, or  
incorrect characters  
- Blank monitor(dark)  
- Blank monitor(bright)  
- Distorted image  
- Unreadable monitor  
- Other monitor problems  
Display changing colors.  
Monitor signal connection/  
cable  
Monitor  
System board  
Display problem not listed  
above (including blank or  
illegible monitor).  
“Monitor” on page 70.  
Load default settings  
(if screen is readable).  
System board  
USB Ports  
Execute “Load BIOS Default Settings” in BIOS  
NOTE:  
Setup to confirm ports presence before diagnosing any  
USB ports problems. Remove all external USB hubs.  
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Table 2-3 Error Symptoms List (Continued)  
NOTE: To diagnose a problem, first find the error symptom  
in the left column. If directed to a check procedure,  
replace the FRU indicated in the check procedure. If  
no check procedure is indicated, the first Action/  
FRU listed in right column is the most likely cause.  
Error Symptoms  
USB device failed.  
Action/FRU  
Ensure that the USB device  
is properly installed.  
Refer to the service manual  
for the USB device.  
USB device.  
USB device cable.  
System board.  
USB device problems.  
Refer to the service manual  
for the USB device.  
Diagnostic Program  
Diagnostics programs  
cannot be executed.  
Reboot the system from the  
diagnostics diskette.  
Load default settings.  
Diagnostics diskette.  
Memory module.  
System board.  
Missing diagnostics file(s).  
Diagnostics diskette.  
Keyboard  
Some or all keys on  
“Keyboard” on page 65.  
keyboard do not work.  
Power Supply  
Pressing power switch does Power switch cable  
not turn off the system.  
(Only unplug power cord  
from electrical outlet can  
turn off system.)  
assembly  
“Power Supply” on page 68  
Pressing power switch does Ensure the power override  
not turn on system.  
switch (situated at the back  
of the machine, just above  
the connector for the power  
cable) is not set to off.  
Power switch cable  
assembly.  
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Table 2-3 Error Symptoms List (Continued)  
NOTE: To diagnose a problem, first find the error symptom  
in the left column. If directed to a check procedure,  
replace the FRU indicated in the check procedure. If  
no check procedure is indicated, the first Action/  
FRU listed in right column is the most likely cause.  
Error Symptoms  
Action/FRU  
Executing software  
Load default settings.  
shutdown from  
Reload software from  
Recovery CD.  
Windows2000 Start menu  
does not turn off the system.  
(Only pressing power switch  
can turn off the system).  
No system power, or power “Power Supply” on page 68  
supply fan is not running.  
System board.  
Other Problems  
Any other problems.  
See “Undetermined  
Problems” on page 72  
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Troubleshooting  
Failing Parts or Assemblies: The check procedures  
generally help you trace a problem to one part or  
assembly. The last step of the specific check  
procedure you are using indicates that a part or  
assembly is failing. You should inspect the part or  
assembly before you decide to replace it. It might be  
loose, dirty, or in need of a small repair. The check  
procedures might lead you to two, or even three,  
possible failing parts or assemblies. The parts that  
might be failing are listed in order of the most  
probable failure. Also, the FRU parts are defined as  
replaced units and are not repaired in the field.  
Measuring Voltages: Some check procedure steps  
instruct you to measure voltages on cable plugs and  
electronic board connectors. If you are asked to  
measure voltage at several places on a plug or  
connector, a chart next to or near the instruction  
indicates the number of the plug or connector, the pin  
numbers you should measure, the signal name, and  
the correct voltage for the condition you are  
measuring. Measure the voltage only at the pins  
listed in the chart. Remember to set the meter on the  
correct scale and to put the meter leads in the correct  
position for the voltage you are asked to measure.  
NOTE: Use frame ground as the ground reference.  
Attach the black (ground) lead of meter to  
frame ground, except where specified  
otherwise.  
Factory-Installed Storage Devices  
Use this check procedure to test any factory-installed  
drives.  
ATTENTION: The customer may have customized  
settings in the Setup Utility (other than default  
settings) on the computer you are servicing.  
Running the Setup Utility might alter those  
settings. Take note of the current settings and  
verify that the customer settings are in place  
when service is complete.  
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NOTE: If you cannot access the hard disk drive or  
load a CD from the CD-ROM drive, make sure  
that the BIOS Setup Utility has the startup  
sequence set with CD ROM and hard disk  
drives.  
001 - START  
Insert the diagnostics program CD into the CD-  
ROM drive.  
Power-off then power-on the system unit.  
002 - DO ANY POST MESSAGES, ERROR  
CODES, BEEPS, OR SYMPTOMS OCCUR? (YES,  
READ AHEAD. NO, GO TO STEP 003)  
Go to “Index of Symptoms, Messages, Error  
Codes, or Beeps” on page 36.  
End.  
003 -  
Select Utility from the menu.  
Select and execute Tech Support Form from the  
menu to generate a system configuration report.  
Compare the system configuration list with the  
actual devices installed in system.  
NOTE: If necessary, remove the cover and visually  
compare the devices installed in the system  
unit to those shown in the Tech Support Form.  
004 - IF THE NUMBER OF HARD DISK OR CD-  
ROM DRIVE IS NOT CORRECT, READ AHEAD; OR  
GO TO STEP 005.  
Check the cable installation of all disk drives.  
(See “System Board Jumpers and Connectors” on  
page 105)  
- IDE Primary Channel Master and Slave Drives  
should be connected to the system board con-  
nector CN8.  
- IDE Secondary Channel Master and Slave  
Drives should be connected to the system board  
connector CN7.  
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NOTE: The CD-ROM drive that comes with system  
unit should be configured as IDE Secondary  
Channel Master device.  
Check all power supply voltages, switch, and  
jumper settings before you replace the system  
board. (See “System Board Jumpers and  
Connectors” on page 105.)  
Check the power supply voltages if you have a  
“system no-power” condition. See “Power Supply  
Connectors and Voltages” on page 107.  
Check the hard disk and CD-ROM drives jumper  
settings. See “3.5-In. Hard Disk Drive Jumper  
Settings” on page 110. Check the voltages of all  
disk drive power connectors. See “Power Supply  
Connectors and Voltages” on page 107.  
Correct the parameter settings under IDE Drives in  
the BIOS Setup. See “Hard Disk Drive” on page 4.  
-
In the BIOS Setup, check that the correct drive  
size is set for the flagged drive shown in the  
System Information. See “Viewing System Infor-  
mation, and Product Data” on page 15.  
Enter BIOS Setup and load default settings.  
If the problem remains, check the continuity on the  
drive and the cable and replace it if necessary. If  
that does not fix the problem, replace the system  
board.  
End.  
005 -  
Select Diagnostics from the PC-Doctor diagnostics  
program main menu. Select and execute Fixed  
Disks Test if you want to test hard disk drive.  
Select CD-ROM/DVD Drive from the main  
program menu to test the CD-ROM drive.  
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- If an error or other symptom appears, go to “In-  
dex of Symptoms, Messages, Error Codes, or  
Beeps” on page 36.  
- If no error can be detected or the symptom is in-  
termittent, go to “Undetermined Problems” on  
page 72 .  
End.  
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Audio (Not Supported by Diagnostics  
Program)  
IMPORTANT: While performing this check, you may  
need to enter and exit Microsoft Windows 2000  
several times. When instructed to select an  
icon or button, double click on the item with the  
mouse.  
NOTE: For more information about using Microsoft  
Windows 2000, see the user’s guide that  
comes with the computer.  
If an operating system other than Microsoft  
Windows 2000 is installed, the program  
screens and icons may differ from these  
instructions.  
001 - START  
Power off the system unit.  
Remove all adapter cards.  
Connect a hard disk drive with pre-loaded  
Windows 2000.  
Power on the system unit.  
Load default settings in setup (audio may be  
disabled).  
002 - DO ANY POST MESSAGES, ERROR  
CODES, BEEPS, OR SYMPTOMS APPEAR? (YES,  
READ AHEAD. NO, GO TO STEP 003)  
Go to “Index of Symptoms, Messages, Error  
Codes, or Beeps” on page 36.  
End.  
003 - DO ANY MESSAGES OR ERROR CODES  
DISPLAY AFTER POST COMPLETES BUT  
BEFORE MICROSOFT WINDOWS 2000 STARTS?  
(YES, READ AHEAD. NO, GO TO STEP 004)  
NOTE: If POST does not complete, answer this  
question “No.”  
Ensure that Windows 2000 is properly installed.  
End.  
004 -  
Perform the following under Windows 2000.  
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NOTE: If an operating system other than Microsoft  
Windows 2000 is installed, the program  
screens and icons may differ from these  
instructions.  
1. Start Microsoft Windows 2000.  
2. Select the Start icon.  
3. Select Settings, then select Control Panel.  
4. Select the Sound icon.  
5. In the Sound window, select chimes from the  
Names field. (To test other adapter card software,  
select an action from a menu in that software.)  
005 - IS THE PREVIEW BUTTON, OR ACTION IN  
OTHER SOFTWARE, SELECTABLE ON THE  
SCREEN (SHOWN IN BLACK AND NOT GRAY)?  
(YES, GO TO STEP 006. NO, READ AHEAD.)  
Ensure that Windows 2000 is properly installed.  
Go to step 001.  
006 -  
Select the Preview button from the Sound window.  
007 - DO YOU HEAR ANY SOUND FROM THE  
SPEAKER? (YES, READ AHEAD. NO, GO TO  
STEP 008.)  
The audio feature is functioning normally. Click  
Cancel to close the dialog box. Exit Microsoft  
Windows 2000.  
If the symptom remains or has changed, go to  
“Index of Symptoms, Messages, Error Codes, or  
Beeps” on page 36.  
End.  
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008 -  
Make sure that the volume control is not turned  
low.  
Make sure that the speaker and its adapter are not  
damaged.  
Make sure that the speaker is plugged in speak-  
out jack. See “System Board Jumpers and  
Connectors” on page 105.  
If the error cannot be resolved, replace the system  
board.  
End.  
Check Procedures 61  
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CD-ROM Drive  
IMPORTANT: For the diagnostics procedure of  
CD-ROM drive, use an external USB diskette  
drive to load the diagnostics program from the  
diskette.  
001 - START  
Insert the diagnostics diskette into the USB  
diskette drive and ensure that there is no CD in the  
CD-ROM drive.  
Select Interactive Tests menu, then select and  
execute CD-ROM Test.  
002 - DO YOU SEE A MESSAGE “NO CD-ROM  
DRIVE OR MSCDEX DEVICE DRIVER  
INSTALLED.”? (YES, READ AHEAD. NO, GO TO  
003.)  
Exit the diagnostics program and power off the  
system.  
Check and ensure that the CD-ROM drive power  
cable and audio and data cables are not damaged  
and are connected properly.  
Check and ensure that the CD-ROM drive driver is  
loaded correctly.  
Load default settings.  
003 - DO THE TESTS OF OPEN/CLOSE TRAY BY  
DIAGNOSTICS PROGRAM AND BY DEPRESSING  
CD-ROM DRIVE BUTTON WORK? (YES, READ  
AHEAD. NO, GO TO STEP 006.)  
Load a known good data CD into the CD-ROM  
drive and try to read its content by typing DIR at  
DOS prompt.  
004 - CAN A CD BE READ FROM THE CD-ROM  
DRIVE? (YES, THEN THE CD-ROM DRIVE  
FUNCTIONS NORMALLY. NO, READ AHEAD.)  
Try reading the CD with a known good CD-ROM  
drive.  
005 - IS THE CD STILL NOT READABLE? (YES,  
READ AHEAD. NO, GO TO STEP 006.)  
Replace system board.  
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End.  
006 -  
Replace CD-ROM drive.  
End.  
Check Procedures 63  
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Memory  
001 - START  
Power off the system unit.  
Insert the diagnostics CD into the CD-ROM  
drive.  
Ensure that all DIMMs are installed correctly.  
Power on the system unit.  
Take note of any messages, error codes, or  
symptoms.  
002 - DO YOU RECEIVE POST MEMORY ERROR  
MESSAGE? (YES, READ AHEAD. NO, GO TO  
STEP 003)  
Enter BIOS Setup Utility then reboot the system.  
Take note of any messages, error codes, or  
symptoms. If the error message remains, go to  
step 005.  
003 -  
Follow the screen instructions to run the Memory  
test.  
004 - DOES THE MEMORY TEST COMPLETE  
WITHOUT AN ERROR? (YES, READ AHEAD. NO,  
GO TO STEP 005)  
The system memory is now functioning correctly. If  
you suspect an intermittent problem, run the  
Memory test again.  
End.  
005 -  
Replace the DIMM that the memory test calls out  
and then re-run memory test.  
If all DIMMs on the system board, have been  
replaced and the problem remains, replace system  
board.  
Go to step 001.  
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Keyboard  
001 - START  
Power off system unit and ensure the keyboard  
plug is connected properly.  
002 -  
Insert the diagnostics CD into the CD-ROM drive  
and power on the system unit.  
Select Interactive Tests menu, then execute  
Keyboard test.  
003 - DOES THE KEYBOARD FUNCTION  
CORRECTLY? (YES, READ AHEAD. NO, GO TO  
STEP 004.)  
Keyboard is functioning normally.  
End.  
004 - ARE THERE ANY STUCK KEYS OR ANY  
GRIME IN THE GAP OF KEYCAPS? (YES, READ  
AHEAD. NO, GO TO STEP 005.)  
Power off the system unit. Carefully remove the  
grime and solve the stuck keys problem.  
Go to step 001.  
005 - ARE THERE ANY BROKEN PINS IN THE  
KEYBOARD PLUG? (YES, GO TO STEP 007. NO,  
READ AHEAD.)  
Try with a known good keyboard.  
006 - DOES THE ERROR SYMPTOM STILL  
REMAIN? (YES, READ AHEAD. NO, GO TO STEP  
007.)  
Replace the system board.  
End.  
007 -  
Replace the keyboard.  
End.  
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Mouse  
001 - START  
Make sure that the mouse ball turns freely.  
Make sure that the mouse plug connects properly.  
002 -  
Power off the system unit.  
Insert the diagnostics CD into the CD-ROM drive.  
Power on the system unit.  
Select Interactive Tests menu, then execute  
Mouse test.  
003 - DO YOU SEE THE MOUSE CURSOR IN THE  
DIAGNOSTICS PROGRAM? (YES, READ AHEAD.  
NO, GO TO STEP 011)  
Test right (left) button and check if right (left) button  
works.  
004 - DOES THE MOUSE BUTTON WORK? (YES,  
READ AHEAD. NO, GO TO STEP 007)  
Test mouse cursor movement.  
005 - DOES THE MOUSE MOVE SMOOTHLY AND  
KEEP X AND Y COORDINATES CHANGED? (YES,  
READ AHEAD. NO, GO TO STEP 006)  
Mouse is functioned normally.  
End.  
006 -  
Power off the system unit.  
Open mouse bottom cover and clean track ball.  
Go to step 002.  
007  
Power off the system unit.  
Check the mouse plug.  
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008 - ARE THERE ANY BROKEN PINS IN THE  
MOUSE PLUG? (YES, GO TO STEP 010. NO,  
READ AHEAD.)  
Try with a known good mouse.  
009 - DO THE ERROR SYMPTOMS STILL  
REMAIN? (YES, READ AHEAD. NO, GO TO STEP  
010.)  
Replace the system board.  
End  
010 -  
Replace the mouse.  
End.  
011 -  
Exit diagnostics program.  
Ensure that the mouse driver is properly installed.  
Go to step 002.  
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Power Supply  
001 - START  
Power off (unplug) the system unit. Check the  
power cord for continuity. Replace if necessary.  
Check for the correct line voltage from the power  
outlet, and verify that the voltage selector switch  
(if present) is set to the correct voltage.  
Power on the system unit.  
002 - DOES THE POWER SUPPLY FAN RUN?  
(YES, GO TO STEP 003. NO, GO TO STEP 004.)  
003 - DOES THE SYSTEM FAIL TO SHUT OFF  
WHEN THE ON/OFF SWITCH IS PRESSED? (YES,  
READ AHEAD. NO, GO TO STEP 005.)  
You might have a damaged on/off switch cable  
assembly.  
Disconnect the on/off switch cable assembly  
connector from the power supply connector and  
take an ohm reading.  
Go to step 007.  
004 -  
Disconnect the power cord from the back of the  
system unit.  
Disconnect all power and switch cable connectors  
from the system board and the power supply.  
Disconnect the power connectors to all drives.  
Connect any one of the power connector to system  
board or drive as power load for driving up power  
supply.  
Reconnect the power cord and turn on the power  
supply.  
005 - DOES THE POWER SUPPLY FAN RUN?  
(YES, READ AHEAD. NO, GO TO STEP 009)  
With the system powered on and the power supply  
fan running, check the voltages of the power  
supply connectors for the system board and all  
drive connectors, as shown in the following figures.  
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20-pin power connector  
IDE power connector  
LS120 power connector  
006 - ARE THE VOLTAGES CORRECT AND DOES  
THE FAN RUN? (YES, READ AHEAD. NO, GO TO  
STEP 009.)  
The power supply is working normally.  
If you suspect the on/off switch cable assembly,  
see Step 003.  
If the fan continues to run when all connectors are  
plugged back in, go to See “Undetermined  
Problems” on page 72.  
If the fan stops running when a drive connector is  
plugged back in, go to “Start” on page 31.  
007 - DO YOU HAVE AN OHM READING WHEN  
THE SWITCH IS PRESSED AND AN OPEN  
READING WHEN THE SWITCH IS RELEASED?  
(YES, READ AHEAD. NO, GO TO STEP 008.)  
Replace the on/off switch cable assembly.  
008 -  
Replace the system board.  
End.  
009 -  
Replace the power supply.  
End.  
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Monitor  
First, set the system to VGA mode. To do this in  
Windows 2000, depress the F8 function key during  
startup. Safe mode (VGA) will be set for Windows  
2000. Use the operating system's video setup to  
change the monitor resolution.  
NOTE: Some monitors have a detachable system I/O  
signal cable between the monitor and the  
system unit. Check the line voltage, power  
cord, and continuity for the system I/O signal  
cable before replacing the monitor. See  
“Monitor Port Signals” on page 117 for pin  
identification.  
001 - START  
Power off the system unit and monitor.  
Remove all adapter cards.  
Make sure that the monitor I/O signal cable is  
properly connected to the system unit and monitor.  
Make sure that the power cords are properly  
connected to the system unit and monitor, and that  
the line voltage is correct.  
Make sure that the monitor contrast and brightness  
controls are not turned too low.  
Make sure that the diagnostics CD is in the  
CD-ROM drive.  
Power on the monitor, and wait 20 seconds.  
Power on the system unit.  
NOTE: You may need to refer to the service  
information provided with the monitor.  
002 - IS THE SCREEN READABLE? (YES, READ  
AHEAD. NO, GO TO STEP 004)  
NOTE: If the screen shows a blinking cursor with no  
memory count running, answer this question  
“No”.  
Select Interactive Tests from the Main Menu.  
Select and execute Video test from the menu.  
Follow the prompts and perform the video test.  
Go to“Index of Symptoms, Messages, Error  
Codes, or Beeps” on page 36.  
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You might have to adjust the monitor controls to  
obtain the best image.  
003 - DOES THE MONITOR SUCCESSFULLY  
PASS Run Normal Test? (YES, READ AHEAD. NO,  
GO TO STEP 004)  
You have successfully completed the video  
diagnostics tests. If the problem remains, go to  
“Index of Symptoms, Messages, Error Codes, or  
Beeps” on page 36  
End.  
004 -  
Power off the system unit.  
Remove the hard disk drive system cable.  
Power on the system unit.  
005 - IS THE SCREEN STILL NOT READABLE?  
Replace the monitor. If the symptom remains,  
replace the system board.  
End.  
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Undetermined Problems  
If an error code, error message or error beeps is  
present, go to “Index of Symptoms, Messages, Error  
Codes, or Beeps” on page 36. If you did not receive  
any messages, error codes, or beeps, see if the  
symptom is listed in “Table 2-3 Error Symptoms List”  
on page 48. If you still cannot solve the problem,  
continue with this check:  
1. Check the power supply voltages (See “Power  
Supply Connectors and Voltages” on page 107). If  
the voltages are correct, return here and continue  
with the following steps:  
2. Power off the system unit.  
3. Perform the following checks, one by one, until you  
have isolated the problem FRU (refer to “Parts/  
Test Point Locations” on page 103 for locations):  
- Load default settings in setup.  
- Check all system board jumper positions and  
switch settings.  
- Check all adapter card jumper positions.  
- Check all device jumper positions.  
- Check all cables and connectors for proper in-  
stallation.  
4. If the jumpers, switch, and voltage settings are  
correct, continue with the following steps:  
Remove or disconnect the following, one at a time:  
- Non-IBM devices  
- External devices  
- Any adapter card (modem card or video card, if  
installed)  
- CD-ROM drive  
- Hard disk drive  
- DIMM  
- Processor  
- System board  
5. Power on the system unit.  
6. Repeat steps 2 through 5 until you find the failing  
device or adapter.  
7. If software related, reload software from Recovery  
CD.  
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8. If the symptom changes, go to “Index of  
Symptoms, Messages, Error Codes, or Beeps” on  
page 36 or to the check procedure for the last item  
tested.  
Replace the last item tested if the system operates  
normally after removing the last item.  
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Diagnostic Aids  
Introduction .......................................................... 76  
Power-On Self Test .............................................. 77  
Diagnostic CD ...................................................... 79  
Using the Diagnostic CD ............................... 79  
Using Diagnostic Program from  
Recovery CD ................................................. 80  
Diagnostics Program Features ...................... 81  
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Introduction  
This section explains the diagnostic aids, power-on  
self test (POST) and diagnostics program  
(PC-Doctor), that are available for troubleshooting  
problems on the system.  
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Power-On Self Test  
Each time you power-on the system, the power-on  
self test (POST) is initiated. Several items are tested  
during POST, but is for the most part transparent to  
the user.  
POST checks the following:  
System Board  
Memory  
Keyboard  
Mouse  
VGA Controller  
Hard Disk Drive(s)  
CD-ROM Drive(s)  
Sound Controller*  
To start POST, power-on the monitor and then the  
system unit. The following will happen:  
1. The IBM logo will appear on the screen.  
2. At this time one of two hot-keys may be used. The  
F1 key will cause the system Setup Utility menu to  
appear. The F9 key will switch the graphical IBM  
logo screen to the traditional text-based system  
startup screen, which displays BIOS version and  
system memory tested. The F9 key will only work  
after exiting BIOS Setup.  
3. If an error is detected during POST, the IBM logo  
screen will automatically switch to the text-based  
screen and display the error message or code with  
a beep. Depending on the criticality of the POST  
error, the system may halt and/or display the  
message “Press <F1> to enter to the Setup or  
<Enter> to continue...”  
If this message appears, pressing the Enter key  
will allow the system to attempt to proceed despite  
the reported error; pressing F1 will cause the  
system Setup Utility menu to appear.  
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4. If no keyboard keys are pressed, and if POST is  
completed without errors, the system will then  
proceed with the loading of Windows 2000 or other  
operating system from a hard disk drive or  
CD-ROM drive, depending on the Start options  
selected in the BIOS Setup Utility.  
If any errors are detected by POST, there will be  
an error message accompanied with an error code  
shown on display screen and a beep. See “Index  
of Symptoms, Messages, Error Codes, or Beeps”  
to find the most likely cause and action.  
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Diagnostic CD  
IMPORTANT: This manual is intended to test the IBM  
6644/6645/6646 machine type only. Testing  
devices which are not included with the original  
product package, including other IBM products,  
prototype cards, or modifying hardware  
settings may give false errors and invalid  
system responses. The diagnostics not  
specifically made for this model may also  
report incorrect errors and information.  
NOTE: Didgnostics will be included on the Recovery  
CD 1.  
This version of PC-Doctor diagnostics program,  
developed by PC Doctor for IBM, is the primary  
method of testing the computer. You can use it to test  
the IBM components of the system and some  
external devices. The amount of time required to test  
components depends on the number of components  
installed and selected. The more devices you have  
attached to your system and selected in PC-Doctor,  
the longer the testing will take.  
NOTE: The diagnostics program for Type 6644/6645/  
6646 are the same.  
Using the Diagnostic CD  
1. Power-off the system unit.  
2. Insert diagnostic CD in drive A.  
3. Power-on the system unit.  
NOTE: Do not press F1 during POST. If any POST  
errors appear after POST, make a note of the  
errors.  
4. DOS should load. During boot, verify that each  
driver loads successfully. For drivers that do not  
load successfully, verify that the device driver is  
associated with it and is installed properly.  
5. Diagnostics program (PC-Doctor) will load, then  
follow the screen instructions to operate.  
NOTE: You will not be able to use the USB mouse  
with the DOS diagnostics. Use the keyboard to  
work with the diagnostic menus.  
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Using Diagnostic Program from  
Recovery CD  
1. Insert the recovery CD into the CD-ROM drive  
then restart computer.  
2. Depress F1 while POST to enter BIOS Setup  
menu. Select and enter “Startup Options”, set the  
first priority of boot sequence to CD-ROM. Save  
and exit from BIOS Setup.  
3. When screen displays IBM Recovery Program  
menu, choose “Run Diagnostics” to execute  
diagnostic program.  
4. Follow the instructions on the screen to operate  
the diagnostics program.  
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Diagnostics Program Features  
Diagnostics program (PC-Doctor) includes the  
following features:  
Table 3- 1 Diagnostic Program Main Menu  
Selections  
Main Menu Selections  
Submenu Selections  
Diagnostics  
Run Normal Test  
Run Quick Test  
CPU/Coprocessor  
System Board  
Fixed Disks  
Other Devices  
CD-ROM Drive  
Memory Test-Full  
Memory Test-Quick  
Interactive Tests  
Keyboard  
Video  
Internal Speaker  
Mouse  
Printer Test  
CD-ROM Test  
Stereo Speaker  
Action Test  
Hardware Info  
System Configuration  
Memory Contents  
IRQ and DMA Use  
Device Drivers  
COM and LPT Ports  
Physical Disk Drives  
Logical Disk Drives  
Diagnostic Aids 81  
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Table 3- 1 Diagnostic Program Main Menu Selections  
(Continued)  
Main Menu Selections  
Submenu Selections  
Hardware Info  
VGA Information  
Software Interrupts  
SCSI Devices  
I/O Use  
IDE Drive Info  
PCI Information  
PNPISA Information  
SMBIOS Information  
DIMM/RIMM info  
Utility  
Run External Test  
Surface Scan Hard Disk  
Benchmark System  
DOS Shell  
Tech. Support Form  
Select Languages  
View Test Log  
Print Log  
Save Log  
View Stored Results  
Quit  
Exit Diags  
Park HD  
Reboot  
About  
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Repair Information  
Removals and Replacements .............................. 84  
Cover ............................................................. 85  
Processor and Fansink ................................. 86  
Memory (DIMM) ............................................ 89  
Adapter Card ................................................. 90  
Internal Speaker ............................................ 91  
USB Port ....................................................... 92  
CD-ROM Drive .............................................. 93  
Hard Disk Drive ............................................. 95  
Power Supply ................................................ 97  
Power Button/Indicator LED and Cable ........ 98  
System Board ................................................ 99  
System Backup Battery ............................... 100  
Handling ESD-Sensitive Parts ........................... 101  
Software Recovery Procedure ........................... 102  
Repair Information 83  
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Removals and Replacements  
BEFORE REMOVING ANY FRU, POWER-OFF THE  
COMPUTER, UNPLUG ALL POWER CORDS FROM  
ELECTRICAL OUTLETS, THEN DISCONNECT ANY  
INTERCONNECTING CABLES.  
ATTENTION: The system board, processors, adapter  
cards, DIMMs, and upgrade processors can be  
damaged by electrostatic discharge. Use an  
electrostatic discharge (ESD) strap to establish  
personal grounding. If you don't have an ESD  
strap, establish personal grounding by  
touching a ground point with one hand before  
touching the static-sensitive FRUs.  
The arrows in the removals and replacements  
procedures show the direction of movement to  
remove a field-replaceable unit (FRU), to turn a  
screw, or the direction to press a tab to release the  
FRU.  
Begin all removals by removing the cover (and rear  
cover, if applicable).  
When other FRUs must be removed prior to removing  
the failing FRU, they are listed at the top of the page.  
Go to the removal procedure for each FRU listed,  
remove the FRU, and then continue with the removal  
of the failing FRU.  
To replace a FRU, reverse the removal procedure  
and follow any notes that pertain to replacement.  
Before disconnecting any cables, note their location  
and orientation. Reinstall any new FRUs with cabling  
in their original location.  
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Cover  
Remove the screw from the top cover.  
Push the top cover forward and pull it away from  
the system.  
Repair Information 85  
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Processor and Fansink  
IMPORTANT: Processors are sensitive to static  
discharge.  
Disconnect the fansink cable from the system  
board.  
Grasp the tabs of the fansink stopper and squeeze  
before pulling it upward.  
Press the fansink clasp to release the lock on both  
sides.  
Remove the fansink by pressing the release tab  
(rectangular end) and lifting it up from the  
Processor.  
Pull up the ZIF socket release lever.  
Lift the processor out of the socket.  
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NOTE: Installing the processor  
Place the ZIF socket release lever to the release  
(up) position.  
Insert the new processor, matching the notched  
corner of the processor with the pin 1 indicator on  
the socket.  
Push down the lever to lock the processor to the  
socket.  
Place the processor heat sink fan over the  
processor.  
Insert one side of fan brace onto the ZIF socket  
Secure by latching the other side to the ZIF socket.  
Reconnect the processor fan sink cable to the  
connector FN1 on the system board.  
Replace the fansink stopper.  
Repair Information 87  
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Memory (DIMM)  
To release the memory module, press down and  
out on the levers on both sides of the DIMM  
socket, and then lift the memory module away.  
Repair Information 89  
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Adapter Card  
To remove the adapter card, remove the screw as  
shown, then lift up the adapter card from the  
system unit.  
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Internal Speaker  
Cut the tie cable to release the cables.  
Disconnect the internal speaker cable from the  
system board.  
To remove the internal speaker, push the left latch  
rightward then remove the internal speaker from  
the system carefully.  
Repair Information 91  
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USB Port  
Disconnect the front USB port cable from the  
system board.  
Remove the two screws from the front USB port  
bracket as shown.  
Remove the front USB port from the unit.  
Remove the two screws from the front USB port  
then detach the bracket from the front USB port.  
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CD-ROM Drive  
To remove the CD-ROM drive, first pull the latch  
upward then push the CD-ROM drive forward.  
Repair Information 93  
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Disconnect the audio cable, CD-ROM cable, and  
power connector from the CD-ROM drive.  
Remove the CD-ROM drive from the unit.  
Remove four screws from the CD-ROM bracket,  
and then remove the bracket from the CD-ROM  
drive.  
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Hard Disk Drive  
Disconnect the power connector from the hard disk  
drive.  
Disconnect the hard disk drive cable and remove it  
from the hard disk drive.  
Repair Information 95  
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To remove the hard disk drive, remove the screw  
from the hard disk drive bracket , and push the  
hard disk drive rightward and forward then pull it  
upward.  
Remove four screws from the hard disk drive  
bracket then remove the hard disk drive from the  
hard disk drive bracket.  
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Power Supply  
Disconnect the power supply connector from the  
system board.  
Remove the three screws from the chassis as  
shown here.  
Remove the power supply from the chassis.  
Repair Information 97  
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Power Button/Indicator LED and Cable  
Disconnect the LED/power switch cable from the  
system board.  
Remove two LEDs from the chassis gently.  
Push two latches to remove the power switch from  
the chassis carefully.  
Remove the cable from the clasps on the chassis  
and then remove the cable from the chassis.  
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System Board  
Remove the six screws as shown then remove the  
system board from the chassis.  
Repair Information 99  
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System Backup Battery  
IMPORTANT: All BIOS configuration settings will be  
lost when the backup battery is removed!  
ATTENTION: Be careful when removing the backup  
battery. If the metal lever is damaged or  
broken, the system board must be replaced.  
Gently pull the metal lever away from the backup  
battery.  
Lift the backup battery out.  
IMPORTANT: Make sure to insert the battery with the  
positive side facing up. A plus(+) sign indicates  
the positive side.  
If you replace the system battery, you need to  
reset the system date and time. You can perform  
this task from the Window 2000 desktop or from  
the Configuration/Setup Utility. To reset the system  
date and time in the Configuration/Setup Utility,  
select the Date and Time option from the Main  
Menu.  
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Handling ESD-Sensitive Parts  
Many electronic parts are sensitive to electrostatic  
discharge (ESD). To prevent damage when working  
with ESD-sensitive parts, observe the following  
instructions. Do these in addition to taking all the  
usual precautions, such as switching off the power  
and unplugging the power cord.  
Keep the ESD-sensitive part in its original shipping  
container (or special ESD bag) until you are ready  
to install the part.  
Make the fewest possible movements with your  
body to prevent an increase of static electricity  
from clothing fibers, carpets, and furniture.  
Put the ESD wrist strap on your wrist. Ensure the  
machine is turned off. Connect the wrist strap to  
the serial bracket mounting screw. This discharges  
any static electricity in your body to the machine  
frame.  
Hold the ESD-sensitive part by its edge connector  
shroud (cover). Do not touch its pins. If you are  
removing a plug-able module, use the correct  
tools.  
Do not place the ESD-sensitive part on the  
machine cover or on a metal table. If you need to  
put down the ESD-sensitive part for any reason,  
put it into it's original container.  
Machine covers and metal tables are electrical  
grounds. They increase the risk of damage  
because they make a discharge path from your  
body through the ESD-sensitive part. (Large metal  
objects can be discharge paths without being  
grounded.)  
Prevent ESD-sensitive parts from being  
accidentally touched by other persons. Reinstall  
machine covers when you are not working on the  
machine.  
If possible, keep all ESD-sensitive parts in a  
grounded metal cabinet.  
Be extra careful when working with ESD-sensitive  
parts while cold-weather heating is being used.  
Low humidity increases static electricity.  
Repair Information 101  
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Software Recovery Procedure  
The Recovery CD includes an install program that  
can be used to restore the original system software.  
To recover the original software on the hard disk  
drive, use the following procedures:  
1. Insert the recovery CD into the CD-ROM drive  
then restart computer.  
2. Depress F1 while POST to enter BIOS Setup  
menu. Select and enter “Startup Options”, set the  
first priority of boot sequence to CD-ROM. Save  
and exit from BIOS Setup.  
3. After system boots from recovery CD, you will be  
prompted with an “IBM Product Recovery  
Program” menu, follow the instructions on the  
screen to operate the software recovery  
procedure.  
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Parts/Test Point Locations  
Introduction ........................................................ 104  
System Board Jumpers and Connectors ........... 105  
Power Supply Connectors and Voltages ........... 107  
Network Cards ................................................... 109  
3.5-In. Hard Disk Drive Jumper Settings ............ 110  
CD-ROM Drive ................................................... 113  
CD-ROM Drive Rear Panel Connectors  
and Jumpers ............................................... 115  
DIMM Configurations ......................................... 116  
System Board Connector Pin Signals ................ 117  
Monitor Port Signals .................................... 117  
IDE Cable Connector Signals ..................... 117  
Parts/Test Point Locations 103  
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Introduction  
This chapter contains system board layouts and  
jumper settings. It is useful when you are asked to  
measure voltages. Use this information to help you  
locate parts such as electronic boards, connectors,  
pin numbers, and test points. This chapter also  
contains jumper settings for the hard disk drive, CD-  
ROM, and the connector information for modem  
adapter card.  
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System Board Jumpers and  
Connectors  
NOTE: The whitened pin of a jumper represents  
pin 1.  
System Board Jumper Settings  
Jumper/Settings  
Function  
JP11, JP4 - Reserved  
1-3, 2-4  
AMP Select:--Reserved  
3-5, 4-6  
JP7 Boot Block CMOS  
Clear  
Clear function  
*Default  
1-2  
2-3  
Clear CMOS/Boot Block  
Recovery  
Parts/Test Point Locations 105  
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System Board Connector Functions  
Connector  
Function  
Connect to...  
USB device  
CN2  
Rear Universal  
Serial Bus (USB)  
connector  
CN3  
ATX Power Supply  
Connector  
Power supply  
CN6  
CN7  
CN8  
CN9  
CRT VGA connector Monitor  
IDE 2  
IDE 1  
CD-ROM  
Hard Disk Drive  
Test Serial Debug  
PORT  
CN10  
CN11  
POV connector  
POV board  
USB device  
Front Universal  
Serial Bus (USB)  
connector  
CN12  
CD- audio input  
connector  
CD-ROM  
CN16  
CN17  
U2  
RFID connector  
Internal Speaker  
CPU connector  
RFID Antenna  
Internal Speaker  
processor  
FN1  
BT1  
CPU Fan connector processor Fan  
System Battery  
connector  
System battery  
JK1  
JK2  
JK3  
Microphone in port  
Line in port  
Microphone  
Audio signal input  
Speaker  
Line out port  
DIMM1  
DIMM2  
System memory  
module connectors  
Memory  
SL1  
SL2  
PCI Slot  
Adapter Card  
CNN1  
Power Button,  
Power LED and  
HDD LED  
Power Button  
HDD LED  
JP4  
Amplifier Select  
Amplifier Select  
JP11  
JP7  
Boot Block / CMOS  
Clear  
NOTE: The white corner of the jumper block  
represents pin 1.  
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Power Supply Connectors and  
Voltages  
Refer to the following figures when checking for  
voltages on power supply cable connectors.  
When checking voltages, the power supply fan must  
be running. To power-on the power supply without  
using the on/off switch, use a screwdriver or other tool  
to short the connector CN 3 (pin13-14) (with the  
switch cable disconnected from the connector on the  
system board), or use a connection (jumper) to short  
the black and green wires of the 20-pin connector on  
power supply..  
20-pin Power Connector  
Pin-hole side view  
Cable side view  
Power Supply Output Pin Assignment  
Pin  
Voltage  
+3.3Vdc  
Cable Color  
Orange  
1
2
+3.3Vdc  
Ground  
+5Vdc  
Orange  
Black  
Red  
3
4
5
Ground  
+5Vdc  
Black  
Red  
6
7
Ground  
Power Good  
+5Vdc  
Black  
Gray  
8
9
Purple  
Yellow  
Orange  
Blue  
10  
11  
12  
13  
+12Vdc  
+3.3Vdc  
-12Vdc  
Ground  
Black  
Parts/Test Point Locations 107  
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Power Supply Output Pin Assignment (Continued)  
Pin  
Voltage  
+5Vdc  
Cable Color  
Green  
14  
15  
16  
17  
18  
19  
20  
Ground  
Ground  
Ground  
no connect  
+5Vdc  
Black  
Black  
Black  
no connect  
Red  
+5Vdc  
Red  
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Network Cards  
The RJ-45 connector is used.  
Intel  
Accton  
NOTE: While transfering the data, ”Act” LED emits  
light to indicate a ready state and the link  
indicators “10 Link” or “100 Link” specifies the  
current line transmission speed. Depending on  
the 10Base-T/100Base-T connections to  
unshielded twisted-pair(10Base-T, UTP) or  
unshielded twisted-pair(100Base-T, Catagory  
5), the transmission speed will be auto-  
detected.  
Parts/Test Point Locations 109  
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3.5-In. Hard Disk Drive Jumper  
Settings  
3.5-In Quantum Fireball Series Hard Disk  
The configuration of the following jumpers controls  
the drive's mode of operation:  
DS - Drive Select (For Master only)  
CS - Cable Select  
PK - Park, used as a place to store a jumper  
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3.5-In Maxtor Hard Disk  
3.5-In Maxtor Hard Disk Drive Jumper Settings  
J50  
On  
Description  
Drive configured as a Master or  
Drive configured as a Master, with an  
attached Slave  
Off  
Drive configured as a Slave.  
Parts/Test Point Locations 111  
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3.5-In Fujitsu Hard Disk  
The configuration of the following jumpers control the  
drive's mode of operation:  
Master  
Slave  
CSEL - Cable Select  
Slave Present  
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CD-ROM Drive  
ATTENTION: Either <option 1> or <option 2>  
CD-ROM drive may come with your machine.  
Their front panel buttons, indicators and  
emergency eject method may be different.  
Lite-on  
LG  
BTC  
Parts/Test Point Locations 113  
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CD-ROM Front Panel Introduction  
Item Description  
1
2
3
Load / eject button  
Headphone jack  
Power-on / busy indicator, lights up in  
green color while disc is set in ready  
state; lights up and flashes in amber color  
during data read or seek operation.  
4
5
Headphone volume control  
Emergency eject hole.  
See CD-ROM Emergency-exit <option 1>  
below.  
Disc tray and emergency eject  
See CD-ROM Emergency-exit <option 2>  
below.  
6
Audio Play / Skip track control button  
CD-ROM Emergency-exit <option 1>  
If for any reason the tray does not  
eject automatically, insert and  
press an eject-bar inside the  
emergency eject hole to manually  
eject the tray. A straightened  
paper clip with a diameter of 1.2  
mm (typical) can be used as an  
eject-bar.  
ATTENTION: Make sure to turn off the power before  
manual disc eject operation.  
CD-ROM Emergency-exit <option 2>  
Locate the bottom edge of the  
disc tray. Gently pry the disk  
tray open with a screwdriver.  
When the disc tray opens,  
simply remove the disc from  
the CD-ROM drive.  
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CD-ROM Drive Rear Panel Connectors  
and Jumpers  
NOTE: CD-ROM drives may come with item no. 5  
(digital audio output) connectors.  
CD-ROM Drive Rear Panel Connectors and Jumpers  
Item  
Function  
Connect to...  
Power supply  
1
2
Power supply connector  
Interface connector  
System board  
CN7: IDE 2  
3
Configuration jumper.  
--  
CS SL MA  
-- -- On  
Description  
Master  
(default).  
-- On --  
On -- --  
Slave.  
Cable  
select  
4
5
Audio line out connector  
Digital audio output  
System board.  
--  
Parts/Test Point Locations 115  
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DIMM Configurations  
The 6644/6645/6646 system board has two DIMM  
sockets. A maximum of 512MB memory may be  
installed. You can install 64MB, 128MB or 256MB  
PC-100 DIMM in any sockets and with any  
combinations.  
NOTE: Some system boards require that DIMM  
socket number one be occupied. If after  
installing memory the system does not boot  
successfully and both DIMM sockets are not  
occupied, switch the DIMM to the unoccupied  
socket and reboot the system.  
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System Board Connector Pin Signals  
Monitor Port Signals  
Signal  
Name  
Signal  
Name  
Pin  
I/O  
Pin  
I/O  
1
Red Video  
O
9
+5 V dc  
2
3
4
5
6
7
8
Green Video  
O
10  
11  
12  
13  
14  
15  
Synch  
Ground  
Blue Video  
O
MonitorIDBit  
0
Monitor ID Bit  
2
I
SDA  
I
Synch  
Ground  
Horizontal  
Synch  
O
O
I
Red Ground  
Vertical  
Synch  
Green  
Ground  
SCL  
Blue Ground  
IDE Cable Connector Signals  
Signal  
Name  
Signal  
Name  
Pin  
I/O  
Pin  
I/O  
1
Host Reset  
O
21  
No  
Connection  
2
3
4
5
6
7
Ground  
22  
23  
24  
25  
26  
27  
Ground  
Host Data 7  
Host Data 8  
Host Data 6  
Host Data 9  
Host Data 5  
I/O  
I/O  
I/O  
I/O  
I/O  
Host IOW  
Ground  
O
Power  
O
Host IOR  
Ground  
Power  
I
I/O Channel  
Ready  
8
9
Host Data  
10  
I/O  
I/O  
I/O  
28  
29  
30  
No  
Connection  
Host Data 4  
No  
Connection  
10 Host Data  
11  
Ground  
Power  
I
11 Host Data 3  
I/O  
I/O  
31  
32  
Host IRQ  
12 Host Data  
12  
No  
Connection  
Parts/Test Point Locations 117  
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Signal  
Name  
Signal  
Name  
Pin  
I/O  
Pin  
I/O  
13 Host Data 2  
I/O  
I/O  
33  
34  
Host A1  
O
14 Host Data  
13  
No  
Connection  
15 Host Data 1  
I/O  
I/O  
35  
36  
Host A0  
Host A2  
O
O
16 Host Data  
14  
17 Host Data 0  
I/O  
I/O  
37  
38  
Host CS0  
Host CS1  
O
O
18 Host Data  
15  
19 Ground  
Power  
39  
40  
ACTIVE bar  
Ground  
I
20 No  
Connection  
Power  
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Safety Inspection Guide  
General Guidelines ............................................ 120  
Safety Inspection Guide 119  
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General Guidelines  
The purpose of this Safety Inspection Guide is to help  
you identify possible unsafe conditions on machines  
that are being inspected for  
a
Maintenance  
Agreement. Each machine has necessary functions  
items installed to provide the operators and service  
personnel with an acceptable level of safety. This  
guide lists only these items. Good judgment should  
be used to identify possible safety conditions not  
covered by this Safety Inspection Guide.  
If any unsafe conditions are present, you must find  
out how serious the hazard is and if you can continue  
before you correct the hazard.  
All current IBM service supplements outlining feature/  
model changes, along with the machine history,  
should be reviewed.  
Check the following items:  
Damaged, missing, or changed parts, especially in  
the area of the On/Off switch and the power  
supply.  
Damaged, missing, or changed covers.  
Possible safety exposure from any non-IBM  
attachments.  
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Parts Catalog  
Abbreviations ..................................................... 122  
System Assembly .............................................. 123  
Assembly 1a: System Unit- Interior ............. 123  
Assembly 1b: System Unit - Exterior ........... 126  
Assembly 2: Hard Drive .............................. 127  
Assembly 3: CD-ROM Drive ....................... 128  
Assembly 4: Power Cord ............................. 129  
Assembly 5: Keyboard and Mouse ............. 131  
Parts Catalog 121  
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Abbreviations  
In this chapter, the following abbreviations are used to  
identify country and language version:  
Country  
Language Version  
Austria  
AT  
AU  
BD  
BF  
CA  
CE  
CF  
CN  
DK  
FI  
Australia  
Belgium - Dutch  
Belgium - French  
Canada  
Canada - English  
Canada - French  
China  
Denmark - Danish  
Finland - Finish  
France  
FR  
GE  
HK  
IT  
Germany  
Hong Kong  
Italy  
JP  
Japan  
LS  
ND  
NL  
NO  
SF  
SG  
SP  
SW  
TW  
UK  
US  
SZ  
LA-Spanish  
Netherlands - Dutch  
Netherlands - Dutch  
Norway - Norwegian  
Swiss - French  
Swiss - German  
Spain  
Sweden - Swedish  
Taiwan  
United Kingdom  
United States  
Switzerland  
122 IBM Desktop System HMM  
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System Assembly  
Assembly 1a: System Unit- Interior  
5
1
6
4
3
7
8
9
2
Asm-  
Index Number  
FRU  
Model Model Model  
6644 6645 6646  
Description  
1a-1  
1a-2  
19K2671 Chassis (w/o  
power supply )  
X
X
X
19K2663 95W Power  
Supply  
X
X
X
(Desk-top)  
1a-3  
1a-4  
1a-5  
19K2672 Port Bracket LP/  
PCI  
X
X
X
X
X
X
X
X
X
19K2674 Power Switch  
Cable Assembly  
19K2673 Planar I/O Port  
EM C Sh ie ld  
(includes label)  
1a-6  
1a-7  
19K2669 HDD DASD  
(Holder)  
X
X
X
X
X
X
Bracket  
19K2670 CD-ROM DASD  
(Holder)  
Bracket  
Parts Catalog 123  
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Asm-  
Index Number  
FRU  
Model Model Model  
6644 6645 6646  
Description  
1a-8  
1a-9  
19K2677 Cable Asm,  
FrontUSBPort  
X
X
X
19K2665 Internal, Single  
Speaker  
X
X
X
(Includes  
Cable)  
1a-NS 09N3329 S55F, Flex ATX  
- Intel 810E  
X
X
X
1a-NS 19K3514 S55F, Flex ATX  
- Intel 810E, w/  
X
POV Card  
1a-NS 09N3346 Intel 370,  
FCPGA,  
Celeron 566-66  
128K  
1a-NS 09N3348 Intel 370,  
FCPGA, PIII  
X
X
667-133 256K  
1a-NS 09N3349 Intel 370,  
FCPGA, PIII  
733-133 256K  
1a-NS 09N3350 Intel 370,  
FCPGA, PIII  
X
X
866-133 256K  
1a-NS 09N3345 Fansink,  
Supports  
X
X
Celeron and  
Pentium III  
Processors,  
FCPGA  
1a-NS 09N3351 64MB module  
(PC133)  
X
X
1a-NS 09N3352 128MB module  
(PC133)  
X
X
X
X
1a-NS 19K3519 Intel LP  
Ethernet Card  
(Lake Clark 2.4)  
1a-NS 19K3517 C2/Intrusion  
X
Switch Cable  
Asm  
1a-NS 19K3518 RF ID Antenna  
1a-NS 19K3516 Keylock Asm  
X
X
X
1a-NS 19K2667 Door (Main  
Bezel)  
X
X
124 IBM Desktop System HMM  
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Asm-  
Index Number  
FRU  
Model Model Model  
6644 6645 6646  
Description  
1a-NS 19K2668 Bezel Blank,  
X
X
X
(CD-ROM  
Insert)  
1a-NS 01K4278 CMOS Backup  
X
X
X
Battery  
(CR2032)  
1a-NS 19K2682 Screw Pack  
1a-NS 19K2683 System Stand  
1a-NS 19K2684 Rubber Feet (4)  
X
X
X
X
X
X
X
X
X
Parts Catalog 125  
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Assembly 1b: System Unit - Exterior  
Asm-  
Index Number  
FRU  
Model Model Model  
6644 6645 6646  
Description  
1b-1  
1b-2  
19K2666 Top Cover  
19K3546 Main Bezel  
X
X
X
X
X
X
126 IBM Desktop System HMM  
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Assembly 2: Hard Drive  
Asm-  
Index Number  
FRU  
Model Model Model  
6644 6645 6646  
Description  
2-1  
2-1  
2-2  
09N3353 10GB HDD,  
3.5", 5400RPM  
X
X
X
X
09N3355 20GB HDD,  
3.5", 5400RPM  
X
X
19K2679 HDD Cable  
X
Parts Catalog 127  
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Assembly 3: CD-ROM Drive  
Asm-  
Index Number  
FRU  
Model Model Model  
6644 6645 6646  
Description  
3-1  
00N8329 40X CD-ROM,  
Black Bezel  
X
X
3-2  
3-3  
19K2680 CD-ROM Cable  
X
X
X
X
X
X
19K2676 Audio Cable,  
CD-ROM  
128 IBM Desktop System HMM  
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Assembly 4: Power Cord  
Asm-  
Index Number  
FRU  
Model Model Model  
6644 6645 6646  
Description  
4-NS 6952301 Power Cord  
US, LA (Lo  
Volt), Canada,  
Mexico, Peru,  
Colombia,  
X
X
X
Ecuador,  
Venezuela,  
Bolivia,  
Panama, El  
Salvador,  
Honduras,  
Nicaragua,  
Dominican  
Republic,  
Guatemala,  
Taiwan, Saudi  
Arabia,  
Thailand  
4-NS 36L8879 Power Cord  
APU Countries  
X
X
X
X
4-NS 14F0032 Power Cord UK/  
HK/Singapore/  
X
X
United Arab  
Emirate (Dubai)  
4-NS 13F9978 Power Cord  
(Euro) France,  
Germany,  
X
X
Sweden,  
Norway,  
Netherlands,  
Finland,  
Belgium,  
Bosnia, Croatia,  
Egypt, Greece,  
Hungary,  
Poland,  
Portugal,  
Romania,  
Slovenia, Spain,  
Sweden,  
Turkey, LA (HI  
Volt)  
4-NS 14F0050 Power Cord  
Swiss  
X
X
X
Parts Catalog 129  
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Asm-  
Index Number  
FRU  
Model Model Model  
6644 6645 6646  
Description  
4-NS 13F9996 Power Cord  
Denmark  
X
X
X
X
X
X
X
X
X
X
X
4-NS 14F0068 Power Cord  
Italy,Chile  
X
4-NS 13F9939 Power Cord  
ANZ  
4-NS 14F0086 Power Cord  
Israel  
X
X
4-NS 14F0014 Power Cord  
South Africa  
130 IBM Desktop System HMM  
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Assembly 5: Keyboard and Mouse  
Asm-  
Index Number  
FRU  
Model Model Model  
6644 6645 6646  
Description  
5-1  
09N5590 106 US English  
X
X
X
103P  
US/CAN/ANZ/  
China  
5-1  
5-1  
09N5591 107 Arabic 253  
X
X
X
X
X
X
09N5592 107 Belgian/  
French 120  
5-1  
5-1  
09N5593 107 Belgian/UK  
120  
X
X
X
X
X
X
09N5594 107 Bulgarian  
442  
5-1  
5-1  
5-1  
5-1  
5-1  
09N5596 107 Czech 243  
09N5597 107 Danish 159  
09N5598 107 Dutch 143  
09N5599 107 French 189  
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
09N5601 107 French  
Canadian 58  
(Commercial)  
5-1  
09N5602 107 German  
129  
X
X
X
5-1  
5-1  
09N5603 107 Greek 319  
X
X
X
X
X
X
09N5604 107 Hebrew  
212  
5-1  
09N5605 107 Hungarian  
208  
X
X
X
5-1  
5-1  
09N5606 107 Iceland 197  
09N5607 107 Italy 142  
X
X
X
X
X
X
Parts Catalog 131  
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Asm-  
Index Number  
FRU  
Model Model Model  
6644 6645 6646  
Description  
5-1  
5-1  
09N5610 107 LA Spanish  
171  
X
X
09N5611 107 Norwegian  
155  
X
X
X
5-1  
5-1  
09N5612 107 Polish 214  
X
X
X
X
X
X
09N5613 107 Portugese  
163  
5-1  
5-1  
5-1  
5-1  
09N5614 107 Romanian  
446  
X
X
X
X
X
X
X
X
X
X
X
X
09N5615 107 Russian  
443  
09N5616 107 Russian/Cy  
441  
09N5617 107 Serbian/  
Cyrilic 118  
5-1  
5-1  
09N5618 107 Slovak 245  
X
X
X
X
X
X
09N5619 107 Spanish  
172  
5-1  
5-1  
5-1  
09N5620 107 Swedish/  
Finn 153  
X
X
X
X
X
X
X
09N5621 107 Swiss, F/G  
150  
09N5622 106 Thailand  
191  
5-1  
5-1  
5-1  
09N5623 107 Turkish 440  
09N5624 107 Turkish 179  
X
X
X
X
X
X
X
X
X
09N5625 107 UK English  
166  
5-1  
5-2  
09N5627 107 Yugoslav/  
Latin 234  
X
X
09N5527 Scrollpoint III  
(SP 3), USB,  
Black  
X
X
132 IBM Desktop System HMM  
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Appendix A. FRU Number List  
FRU Number  
00N8329  
01K4278  
09N3329  
09N3345  
09N3346  
09N3348  
09N3349  
09N3350  
09N3351  
09N3352  
09N3353  
09N3355  
09N5527  
09N5590  
09N5591  
09N5592  
09N5593  
09N5594  
09N5596  
09N5597  
09N5598  
09N5599  
09N5601  
09N5602  
09N5603  
09N5604  
09N5605  
09N5606  
09N5607  
09N5610  
09N5611  
09N5612  
09N5613  
09N5614  
Asm-Index  
3-1  
Page  
128  
125  
124  
124  
124  
124  
124  
124  
124  
124  
127  
127  
132  
131  
131  
131  
131  
131  
131  
131  
131  
131  
131  
131  
131  
131  
131  
131  
131  
132  
132  
132  
132  
132  
1a-NS  
1a-NS  
1a-NS  
1a-NS  
1a-NS  
1a-NS  
1a-NS  
1a-NS  
1a-NS  
2-1  
2-1  
5-2  
5-1  
5-1  
5-1  
5-1  
5-1  
5-1  
5-1  
5-1  
5-1  
5-1  
5-1  
5-1  
5-1  
5-1  
5-1  
5-1  
5-1  
5-1  
5-1  
5-1  
5-1  
FRU Number List 133  
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FRU Number  
09N5615  
09N5616  
09N5617  
09N5618  
09N5619  
09N5620  
09N5621  
09N5622  
09N5623  
09N5624  
09N5625  
09N5627  
13F9939  
13F9978  
13F9996  
14F0014  
14F0032  
14F0050  
14F0068  
14F0086  
19K2663  
19K2665  
19K2666  
19K2667  
19K2668  
19K2669  
19K2670  
19K2671  
19K2672  
19K2673  
19K2674  
19K2676  
19K2677  
19K2679  
19K2680  
19K2682  
Asm-Index  
5-1  
Page  
132  
132  
132  
132  
132  
132  
132  
132  
132  
132  
132  
132  
130  
129  
130  
130  
129  
129  
130  
130  
123  
124  
126  
124  
125  
123  
123  
123  
123  
123  
123  
128  
124  
127  
128  
125  
5-1  
5-1  
5-1  
5-1  
5-1  
5-1  
5-1  
5-1  
5-1  
5-1  
5-1  
4-NS  
4-NS  
4-NS  
4-NS  
4-NS  
4-NS  
4-NS  
4-NS  
1a-2  
1a-9  
1b-1  
1a-NS  
1a-NS  
1a-6  
1a-7  
1a-1  
1a-3  
1a-5  
1a-4  
3-3  
1a-8  
2-2  
3-2  
1a-NS  
134 IBM Desktop System HMM  
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FRU Number  
19K2683  
19K2684  
19K3514  
19K3516  
19K3517  
19K3518  
19K3519  
19K3546  
36L8879  
6952301  
Asm-Index  
1a-NS  
1a-NS  
1a-NS  
1a-NS  
1a-NS  
1a-NS  
1a-NS  
1b-2  
Page  
125  
125  
124  
124  
124  
124  
124  
126  
129  
129  
4-NS  
4-NS  
FRU Number List 135  
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136 IBM Desktop System HMM  
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Index  
A
Audio  
Check Procedure, 59  
Audio Setup 18  
B
BIOS  
Flash Update Procedure, 9  
Model Number and Serial Number, 10  
BIOS Setup Utility 12  
Date and Time 21  
Disk Drives, 16  
Main Menu, 12  
System Information, 15  
C
CD-ROM Drive  
113  
Check Procedure, 62  
Connectors and Jumpers, 115  
Emergency-exit , 114  
Emergency-exitl , 114  
Front Panel , 114  
CD-ROM Drive, 4  
Check Procedures, 30  
CMOS Reset, 7  
D
Dimension, 27  
E
Electrical input, 27  
Environment, 27  
Error Beeps, 30, 36  
Error Codes and Messages List, 38  
Error Codes, 30, 36  
Error Messages, 36  
Error Symptoms List 48  
Error Symptoms, 36  
ESD 101  
External Ports 4  
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H
Hard Disk Drive  
3.5-In. Jumper Settings, 110  
Cable Connector Signals, 117  
Hard Disk Drive, 4  
Hardware Interfaces, 6  
I
IDE Cable Connector Signals 117  
IDE Drive Setup 17  
Internal Cabling, 5  
K
Keyboard 5  
Check Procedure, 65  
M
Memory 3  
Check Procedure, 64  
DIMM Configurations, 116  
Monitor  
Check Procedure, 70  
Port Signals, 117  
Mouse  
Check Procedure, 66  
Mouse, 5  
Multimedia 4  
O
Operating Requirements 28  
P
Password  
Changing, 23  
Removing, 23  
Setting, 22  
Password, 8  
PBSRAM 3  
Pentium III 3  
Port Signals  
Monitor 117  
POST, 36, 77  
Power consumption, 27  
Power Management, 5  
Power Supply  
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Check Procedure, 68  
Connector Pin Assignment 107  
Connectors and Voltages, 107  
Power Supply Connectors and Voltages 107  
Power Supply, 5  
Processors (Machine Type 6644) 3  
Processors (Machine Type 6645/6646) 3  
R
Removals and Replacements 84  
ESD-Sensitive Parts, 101  
S
Safety Information VIII  
Startup Options 19  
System Board  
Connectors, 106  
Jumper Settings, 105  
System Unit 123  
Exterior 126  
System Unit- Exterior 126  
T
Troubleshooting, 55  
U
Undetermined Problems  
Check Procedure, 72  
USB Boot device 16  
V
Video 4  
Video Setup 16  
Voltage Supply  
Switch Settings, VII  
W
Weight, 27  
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Printed in U.S.A.  
International Business Machines Corporation  
Old Orchard Road,  
Armonk, New York 10504  
Part Number: 06P1788  
Pub Number: S06P-1788-00  
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