JVC Laptop MP XV841DE User Manual

SERVICE MANUAL  
Mobile mini note PC  
X270E00403  
MP-XV941DE, MP-XV841DE,  
MP-XV841GB,MP-XV841GBEX,  
MP-XV841US  
Area Suffix  
DE ---------- Germany  
GB --------------- U.K.  
US ------------- U.S.A.  
TABLE OF CONTENTS  
1
2
3
4
5
PRECAUTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2  
SPECIFIC SERVICE INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2  
DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3  
ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-10  
TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-11  
COPYRIGHT © 2004 Victor Company of Japan, Limited  
No.XE003  
2004/7  
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SECTION 3  
DISASSEMBLY  
3.1 Disassembly procedure  
3.1.1 Removing the DIMM cover(See Figure 1)  
(1) Remove three screws A from the DIMM cover on the bot-  
tom of the main unit.  
(2) Remove the DIMM cover by lifting it up from the gap a.  
Gap a  
A
A
A
DIMM Cover  
Fig.1  
3.1.2 Removing the DVD drive unit(See Figure 2)  
• Prior to the following procedure, DIMM cover should be re-  
moved.  
(1) Remove two screws B, which are attached to the DVD  
drive unit, from the bottom of the main unit.  
Part b B  
DVD Drive unit  
(2) Push part b in the direction indicated by the arrow, then pull  
out the DVD drive unit by sliding outward.  
Hole c  
B
Fig.2  
3.1.3 Removing the fitting(See Figure 2, Figure 3)  
• Prior to the following procedure, DVD drive unit should be  
removed.  
DVD Drive unit  
(1) Eject the tray by inserting a piece of fine wire into the small  
hole c.  
(2) Disengage three tabs d, and then disengage one hook e.  
* Pay special attention not to damage either the tabs or  
the hooks.  
Tab d  
Hook e Tab d  
Tab d  
Fig.3  
Fitting  
(No.XE003)1-3  
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3.1.4 Removing the keyboard assembly(See Figure 4 , Figure 5,Figure 6)  
(1) Individually push three latches f in the upper part of the key-  
board with a single-slotted or flat screwdriver, and then lift  
the keyboard assembly upward.  
Latch f  
Latch f  
Latch f  
Keyboard  
Fig.4  
2
Removes  
1
1
2
Attach  
Fig.5  
(2) Pull out the card wires from the connectors CON6 and  
CON8 on the main board respectively.  
Main board  
Keyboard CON6  
CON8  
Fig.6  
1-4 (No.XE003)  
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3.1.5 Removing the hinge cover(See Figure 7 ,Figure 8, Figure 9)  
(1) Remove one screw C and two screws B from the hinge  
cover.  
C :short D :long  
(2) Disconnect one card wire from the connector CON5 on the  
main board.  
D
CON5  
Hinge cover  
C D  
Fig.7  
(3) Remove one screw E from the bottom of the main unit.  
E
Fig.8  
(4) Leave the LCD panel open. Release four tabs g on the  
hinge cover by slowly inserting a single-slotted or flat  
screwdriver into the slot of the battery terminal.  
Tab g Tab g  
*Please make sure not to damage either the hinge cov-  
er or the bottom case when releasing the tabs.  
(5) Slowly remove the hinge cover in the direction indicted by  
the arrow.  
Bottom case  
Tab g  
Tab g  
Hinge cover Battery terminal LCD Panel assembly  
Fig.9  
(No.XE003)1-5  
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3.1.6 Removing LCD panel assembly(See Figure 10 and Figure 11)  
• Prior to the following procedure, the keyboard assembly and  
the hinge cover should be removed.  
(1) Disconnect each wire from the connectors CON2 and  
CON9 on the main board.  
CON2  
AUX Terminal  
F
F
(2) Remove two wires from the connector on the wireless LAN  
board.  
*Connect grey wire to the AUX terminal, and black wire  
to the MAIN terminal for reassembly.  
(3) Remove two screws F which are attached to the hinge.  
CON9  
MAIN Terminal  
Wireless LAN board  
Main board  
Fig.10  
(4) Remove two screws G which are attached to the hinge  
from the bottom of the main unit.  
G
G
(5) Pull out the hinge by moving the LCD panel unit upward.  
Fig.11  
1-6 (No.XE003)  
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3.1.7 Removing the top case(See Figure 12 and Figure 13)  
• Prior to the following procedure, the LCD panel assembly  
should be removed.  
(1) Remove four screws H and two screws I from the shield  
Shield plate  
CON4  
J
J
CON3  
plate.  
H:long I:short  
(2) Remove two screws J that are attached to the top case as-  
I
I
sembly.  
J : black  
H
(3) Disconnect wires from each connector CON3,CON4, and  
CON10 on the main board.  
CON10  
Tab h  
H
Top case  
Tab h  
Tab h  
K
Fig.12  
(4) Remove four screws K and one screw L from the bottom of  
the main unit.  
K : long L : short  
(5) Release seven tabs h on the top case.  
K
K
K
L
Fig.13  
3.1.8 Removing the main board(See figure 14)  
• Prior to the following procedure, LCD panel assembly and top  
case assembly should be removed.  
Main board  
M
(1) Remove four screws M and one screw N from the main  
board.  
M : silver N : black  
N
M
M
M
Fig.14  
(No.XE003)1-7  
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3.1.9 Removing the parts on the main board(See Figure 15  
and Figure 16)  
• Prior to the following procedure, main board should be re-  
moved.  
*Removing the hard disc drive.  
(1) Pull out the flexible wire from the connector CON25 on  
the main board.  
Hard disc drive  
Main board  
CON25  
Fig.15  
(2) Remove two screws O that are attached to the hard disc  
Memory card  
i
Wireless LAN card  
drive.  
i
*Removing the built in memory card and wireless LAN card.  
(1) Release the catches on both sides of the memory card i.  
Pull out the memory card as it pops up.  
(2) Release the catches on both sides of the wireless LAN  
card j and remove the wireless LAN card as the same way  
as removing the memory card .  
j
j
O
O
Main board  
Fig.16  
1-8 (No.XE003)  
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3.1.10 Removing LCD panel assembly(See Figure 17, Figure  
Cushions and P  
Tab  
18)  
• Prior to the following procedure, LCD panel assembly should  
be removed.  
(1) With a sharp pointed tool, take the cushions off. (Cushions  
are fixed with adhesive tape.)  
(2) Remove two screws P that are attaching the LCD panel  
frame.  
(3) Release the tabs on the frame by pushing the LCD panel  
frame outward .  
Tab  
Tab  
LCD  
Tab  
Fig.17  
(4) Remove two screws Q from the LCD.  
(5) Remove the socket wire from the connector CN2 on the in-  
verter board.  
LAN Antenna  
LAN Antenna  
R
R
LCD  
Q
Q
Inverter board  
CN2  
Fig.18  
3.1.11 Removing the LAN antenna(See Figure 18)  
• Prior to the following procedure, LCD should be removed.  
(1) Remove four screws R that are attached to the LAN anten-  
nas.  
(2) Remove the tape which fixes the LAN antenna if required.  
(No.XE003)1-9  
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SECTION 4  
ADJUSTMENT  
This service manual does not describe ADJUSTMENT.  
1-10 (No.XE003)  
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SECTION 5  
TROUBLESHOOTING  
5.1 Preinstallation procedure  
No data including Windows XP has been recorded in service parts HDD. It is necessary to put data in HDD[Preinstall] after  
HDD is replaced.  
The following materials are needed  
• a disc for installing HD Image  
Procedure  
(1) Turn the power of the main unit off.  
(2) Eject the tray by inserting a pin into the hole on the fitting. Refer to [Removing the fitting] in Disassembly section.  
(3) Set the HD image installation disc and then close the tray.  
(4) Shortly after pressing the power button, "Press any key to continue...." is displayed in the bottom of the screen. Press any key.  
(5) "Power Quest Image Center" will run to start the preinstallation.  
(6) "Finish Q:\>" is displayed when the preinstallation is completed. Remove the disc by pushing the EJECT button on the fitting.  
(7) Push the power button to turn OFF.  
• What is Power Quest Image Center ?  
Operation of data input by using a software Image Center made by Power Quest.  
(No.XE003)1-11  
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5.2 BIOS update procedure  
After the main board replacement, conform BIOS version to the previous BIOS version. (However, if the client wish an update, comply  
with the client's request.) When BIOS update is required as a result of modification, refer to JVC homepage for detail.  
Notice for BIOS update  
• Make sure to exit all the applications or programs that are running. Resident software such as antivirus software must also be  
either finished or canceled.  
• Disconnect all the peripheral appliances, modem cables, and LAN cables.  
• Do not perform system shutdown, reset operation, or power cut off during the update procedure as it may disable restart function.  
• Cancel all the passwords on the BIOS or HDD when starting BIOS, and then perform the update procedure.  
• Make sure to connect to AC adapter and fit with a fully loaded battery when updating. (Prepare two ways of power supply in case  
of power down, adapter dropout, or battery shortage.)  
The following materials are needed  
• USB connection floppy disc drive (Provision from JVC)  
• A_FLASH2 disc (Provision from JVC)  
• BIOS update file (Download from JVC homepage)  
Update procedure  
1. BIOS update disc creation  
(1) Download an update file from JVC homepage.  
(2) Save the updated file to the route of A_FLASH2 disc.  
2. Start from the USB connected floppy disc drive.  
(1) Insert BIOS update disc into the floppy disc drive and connect it to the PC via USB.  
(2) Press the button to turn on and to start DOS. [A:\>_] is displayed on the screen.  
3. Execution  
(1) Input[aflash2]after [A:\>_] then press Enter key.[ACPI BIOS Flash Memory Write V2.05] will start running.  
(2) Display on the screen is as shown below, input [2] then press Enter Key.  
Choose one of the followings :  
1.Save current BIOS to file  
2.Updata BIOS to flash Memory  
Enter choice [ 2 ]  
(3) Display on the screen is as shown below, input the update file name.  
(e.g.) 0201j3n.rom  
•If you input a wrong file name, [FILE NOT OPEN]will be displayed on the screen. Press any key to start again and input  
the correct file name.  
Please input file name of new BIOS : _  
(4) Input [Y] answering the question on the screen shown as below. The update will start.  
Are your sure to replace BIOS? (Y/N) : [ Y ]  
(5) When the update is completed properly, [Successfully! press any key to continue.] is displayed. Press any key to return to  
the initial screen.  
(6) Press [ESC]key to return to DOS screen. Turn the switch off to finish the procedure.  
1-12 (No.XE003)  
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5.3 Diagnosis on HDD  
By operating this procedure, HDD failure is self diagnosed.  
The following materials are needed. (Provision from JVC)  
• USB connection floppy disc drive  
• Drive Fitness Test disc  
Diagnosis procedure  
1. Start from USB connected floppy disc drive.  
(1) Insert Drive Fitness Test disc into the floppy disc drive and connect the floppy disc drive to the PC via USB.  
(2) Press the power button to turn the PC on. The PC DOS 7.0 Startup Menu will start running shortly. Input [2] and press EN-  
TER key.  
PC DOS 7.0 Startup Menu  
1. SCSI and ATA support  
2. ATA support only  
Enter a choice : 2  
2.Execution  
(1) When [License Agreement] is displayed, input [A].  
License Agreement  
I Agree  
I don't Agree  
(2) When [Device List] is displayed, select [Primary Master] and input [Y].  
Device List  
00 ATA  
Primary Master  
****************  
****************  
**.** GB  
01 ATAPI Secondary Master  
Yes  
No  
(3) The screen returns to [Device List] confirmation display. Input [A].  
Device List  
Help  
00 ATA  
Primary Master  
****************  
****************  
01 ATAPI Secondary Master  
Quick Test  
Advance Test  
Rescan Bus  
(No.XE003)1-13  
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(4) When [Advanced Test] is displayed, input [S].  
Advance Test  
Start  
Cancel  
Help  
(5) [Test Results] is displayed. If no bad sector is detected on the HDD, [Operation completed successfully] is displayed. As a  
result the HDD has been diagnosed as proper.  
Test Results  
Operation completed successfully  
Disposition Code = XXXX  
Ok  
(6) Input [O], to return to [Device List] display. Press [Alt] key and [X] at the same time, [Confirmation] screen is displayed. Next  
input [Y].  
Confirmation  
Do you want to exit this program ?  
Yes  
No  
(7) When [Exit] screen is displayed, press power button to turn the PC off to finish the procedure.  
Exit  
Please reboot your system now !  
1-14 (No.XE003)  
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5.4 Caution in replacing a bottom case  
COA LABEL  
[LE40888-002A/COA LABEL PRO ] can not be reused. When replacing the bottom case, COA LABEL is also needed.  
Serial label  
Serial labels with model names and serial numbers are not stocked as service parts. Reuse the serial label. Use glue remover when  
removing the serial label.  
Parts No:UN-001  
Parts name:SUBSIDIARY MATERIAL  
Removing the serial label  
(1) Drip a few drops of glue remover onto the spatula .  
(2) Immediately remove the serial label slowly and carefully with a spatula.  
(3) If any stickiness left on the surface of the label, drip few more drops of glue remover and wipe with some tissue paper.  
5.5 Main board replacing procedure  
(1) Replace parts from the previous MAIN BOARD.  
• Replace [HDD].  
• Replace [LAN BOARD ASSY].  
• Replace an expansion memory. (If there is any)  
(2) Adjust after the main board replacement.  
• Conform the BIOS version to the previous MAIN BOARD.  
• If the client wish an update, comply with the client's request.  
(3) Perform an operation check after the replacement of the main board.  
Perform an operation check according to the [ Operation check item list after the repair is completed ].  
5.6 Operation check item list after the repair is completed  
Item  
IEEE1394  
Contents  
Required equipment  
1
2
3
4
5
Is the digital video camera recognized, when it is connected to JVC digital video camera  
IEEE1394 port?  
PC CARD SLOT Is the PC card which is corresponding to Card Bus recognized, PC card, that is corresponding to Card Bus,  
when it is inserted into PC CARD SLOT?  
Is the mouse recognized, when it is connected to USB?  
on the market.(e.g. 100Mbase-T LAN card)  
USB mouse on the market (Low transfer  
rate)  
USB  
MIC  
Can the sound be recorded, when a MIC on the market is con- MIC on the market  
nected?  
HEADPHONE  
Can the sound be heard, when a headphone on the market is Headphone on the market  
connected?  
6
7
LAN  
Is the network recognized, when it is connected to LAN?  
Network  
WIRELESS LAN Is the network recognized, when it is connected to WIRELESS Network, Access point for WIRELESS LAN  
LAN?  
Does WIRELESS LAN ON/OFF switch work?  
8
9
MODEM  
DC in  
Can the MODEM be connected to the Internet through the tele- Telephone line. PPP account to connect di-  
phone line?  
alup with the Internet.  
General power supply  
Outer battery  
Can AC be driven?  
10 BATTERY  
Is the outer battery recognized?  
Can battery be driven?  
Can it be switched to charge mode?  
Is RESET effective?  
11 RESET  
12 KEYBOARD  
13 STICK  
Is the key input effective?  
Does the STICK work?  
14 THREE BOTTON Does each button operate normally?  
15 SPEAKER  
16 RUNNING  
Is the sound emitted from both channels of the SPEAKER?  
Is there any trouble when it is continuously played back by Win-  
dows Media Player for eight hours?  
17 SD CARD SLOT Is SD card recognized, when it is inserted into SD CARD SLOT?  
18 BUILT-IN MIC  
19 VOLUME  
20 BRIGHTNESS  
CONTROL  
Can it record sound?  
Is the VOLUME controllable?  
Is the BRIGHTNESS controllable?  
21 DOCKING  
BOARD  
22 ODD  
Do both USB terminal and VGA terminal function,  
when a port replicator MP-DPX1is connected?  
Can it be opened and closed?  
Can playback be done with the play button on the TOP CASE?  
Is there any abnormal noise or operation?  
23 FAN  
(No.XE003)1-15  
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Victor Company of Japan, Limited  
AV & MULTIMEDIA COMPANY MOBILE IT CATEGORY 1644, Shimotsuruma, Yamato, Kanagawa 242-8514, Japan  
(No.XE003)  
Printed in Japan  
WPC  
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