Acer Computer Monitor RB23WABAS User Manual

ACER  
ACER_LCD_H233H_SM081126V1  
Model ID:RB23WABAS  
DBG DPBU II  
Service  
Service Manual  
Table of Contents  
Appendix I : Users Manual  
Appendix II User’s QSG  
Appendix III :Spare Parts List  
Appendix IV: Software Pack  
Safety Notice  
Any person attempting to service this chassis must familarize with the chassis and be  
aware of the necessary safety precautions to be used when serving electronic equipment containing  
high voltage.  
Published by Wistron Corporation Printed in Taiwan © All rights reserved Subject to modification  
26th-Nov.-2008  
ꢀꢁꢂꢃ  
Download from Www.Somanuals.com. All Manuals Search And Download.  
 
2
ACER H233H  
1. Product Specification  
This model combine with three platform. See below  
explanation.  
The LCD monitor consists of an interface board, a power board  
and inverter board, a function key board.  
1.Scaler IC:RTD2482D used in VGA ,DVI and HDMI port  
Using simply word to define it(1A1D1H)  
2.Scaler IC:RTD2482 used in VGA and HDMI port. Using  
simply word to define it(1A1D)  
The interface board will house the flat panel control  
logic , brightness control logic, audio function control  
(option), key function control, DDC and DC to DC  
conversion to supply the appropriate power to the  
whole board and LCD flat panel , and transmitting  
LVDS signals into LCD flat panel module to drive the  
LCD display circuit .  
3.Scaler IC:RTD2482RD used in VGA ,DVI and HDMI port  
.Using simply word to define it.(1A1D1H+OD)  
The product specification demonstrate all of the model:  
1.1 SCOPE  
The power board will support main power DC5V to  
interface board, and drive the two CCFLs (Cold  
Cathode Fluorescent Tube).  
This document defines the design and performance  
requirements for a 23W inch diagonal , flat panel monitor .  
The display element shall be a 1920x1080 resolution  
TFT-LCD (Thin Film Transistor Liquid Crystal  
Display).16.7M color(Hi-FRC) images are displayed on  
the panel.Video input signals are analog RGB (0.7Vp-  
p). When the system is powered-on , previously stored  
screen parameters for a pre-defined mode will be  
recalled if the operating mode is one of stored in  
memory( 2213 factory timing mode).This monitor  
operates normal by non-interlaced mode.  
DDC (Display Data Channel) function is DDC2Bi  
compliance. Power saving function complies with the  
DPMS(Display Power Management Signaling)  
standard.  
The interface board provides the power ON / OFF  
control over the power board.  
Whole monitor to control the DPMS LED indicator to  
function key board.  
MONITOR SPECIFICATIONS  
ITEM  
Frequency  
SPEC  
Signal Input  
(Analog)  
Analog:  
H:31kHz~94kHz  
V:50Hz~75Hz  
205MHz (Max)  
Analog 0.7Vp-p  
Pixel clock  
Video Input  
Display Pixels  
Sync Signal  
Frequency  
640 x 480 (VGA) ~ 1920 x 1080  
Separate SYNC for TTL (N or P)  
Digital:  
Signal Input  
(Digital)  
H:31kHz~94kHz  
V:50Hz~75Hz  
Pixel clock  
Video Input  
165MHz (Max)  
Analog 0.7Vp-p  
1.2 GENERAL REQUIREMENTS  
Input Impedance 75Ω  
Display Pixels  
AC Input  
640 x 480 (VGA) ~ 1920 x 1080  
1.2.1Test Condition  
AC100V ~ AC240V  
10% 50/60Hz, 3 pin AC power cord  
Connector  
Input connector  
Audio Jack (OPTIONAL)  
AC in 100V~240V  
Front  
D-SUB 15 pin, DVI-D & HDMI  
Brightness level & contrast level max. Full white  
pattern test mode following spec. Warm up more  
than 1 hr, ambient light < 10 Lux , Luminance  
meter CA210 or BM7 or same equipment  
1.2.2Test Equipment  
Audio input 3.6Φ  
Power Comsumption  
User’s Control  
Active 50W(non-USB)/60W(w/USB), power saving < 2W  
Input ,E-KEY, Auto Adjust ,Menu Adjust(-), Adjust(+),Power  
OSD  
Contrast, Brightness, Position, Clock, Phase, Analog/Digital,  
Reset, Color, Language select, etc.  
Pre-Defined Timing  
Factory  
User  
13  
9
Plug and Play  
Power Saving  
VESA DDC2Bi  
VESA DPMS  
The reference signal source is a calibrated  
Chroma 2237 video generator or higher. The use  
of other signal generators during qualification and  
production is acceptable provided the product  
complies with this specification.  
H  
1 kHz, V 1 Hz  
Input Signal Counter Tolerance  
1.3.1 Interface Connectors  
1.3.1.1 Power Connector and Cables  
The AC input shall have an IEC/CEE-22 type male  
power receptacle for connection to mains power.  
The power cord shall be with length of 1.8 0.005  
meters.  
1.3 ELECTRICAL  
This section describes the electrical requirement  
of the monitor.  
1.3.1.2 Video Signal Connectors and Cable  
The signal cable shall be 1.8 0.005 meters long.  
At the end of the cable shall be a molded-over,  
shielded, triple row, 15 position, D-subminiature  
connector. The CPU connection shall have captive  
screw locks, which will be adequate for hand  
tightening. The monitor connection may use small  
screws.  
Download from Www.Somanuals.com. All Manuals Search And Download.  
 
3
ACER H233H  
1. Product Specification (continued)  
C o n n e c to r P in D e s c rip tio n  
D -S U B P in D e s c riptio n  
1.3.2.2 Video Signal Termination Impedance  
P in  
1
N a m e  
R e d - V id e o  
D e s c riptio n  
This analog video signal termination shall be 75Ω  
1% which shall be resistive with a negligible reactive  
component.  
R e d vid e o signa l inp ut.  
G re e n vid e o signa l inp ut.  
B lue vid e o signa l inp ut.  
G ro und  
2
G re e n- V id e o  
B lue - V id e o  
G N D  
3
4
5
D D C - G N D  
R e d - G N D  
G re e n- G N D  
B lue - G N D  
+ 5 V  
D D C gro und fo r the V E S A D D C 2 B i func tio n.  
A na lo g signa l gro und fo r the R e d vid e o .  
A na lo g signa l gro und fo r the G re e n vid e o .  
A na lo g signa l gro und fo r the B lue vid e o .  
+ 5 V inp ut fro m ho st syste m fo r the V E S A D D C 2 B i func tio n.  
S igna l gro und  
6
7
1.3.2.3 Synchronization ( Sync ) Signals  
8
9
The Horizontal Sync (HS) TTL signal is used to initiate  
the display of a horizontal line. HS may be either active  
high or active low, depending upon the timing .The  
Vertical Sync (VS) TTL signal is used to initiate the  
display of a new frame .VS may be either active high or  
active low, depending on the timing .  
1 0  
1 1  
1 2  
1 3  
1 4  
1 5  
S ync - G N D  
G N D  
G ro und  
D D C _ S D A  
H - S Y N C  
V - S Y N C  
D D C - S C L  
S D A signa l inp ut fo r the V E S A D D C B 2 i func tio n.  
H o rizo nta l signa l inp ut fro m the ho st syste m .  
V e rtic a l signa l inp ut fro m the ho st syste m .  
S C L signa l inp ut fo r the V E S A D D C 2 B i func tio n.  
1.3.2.4 Sync Signal Levels  
The monitor must accept sync signals from both 3.3 and  
5 volt TTL logic families.The inputs shall sense a logic 0  
when the input is 0.8 volt or less and shall sense a logic  
1 when the input is 2.0 volts or greater. In addition to  
these level requirements , there shall also be a  
minimum of 0.3 volt hysteresis provided for noise  
immunity (typically by using a Schmitt Trigger input ).  
That is , the input level at which the monitor actually  
detects a logic 0 shall be at least 0.3 volt lower than the  
level at which it actually detects a logic 1.If the monitor  
sync processing circuits are designed around the 3.3  
volt logic family ,then the sync inputs must be 5 volt  
tolerant .  
1.3.1.3 Audio Jack (option)  
This jack shall connect the audio input from  
host computer.  
1.3.2 Video Input Signals  
NO. Symbol  
Item  
Min Normal Max Unit  
Remark  
94 kHz Minimum Range  
75 Hz Minimum Range  
1
2
3
4
5
Fh Scanning Horizontal Frequency 31  
Fv Scanning Vertical Frequency  
Vih Hi Level Input  
50  
2
1.3.2.5 Sync Signal Loading  
5
Note 1)  
Vil Low Level Input  
0
0.8  
1.0  
V
Note 1)  
TTL input loading shall be equivalent to one TTL input  
load. When logic 0 is asserted by a sync input , the  
maximum current source from any single monitor sync  
input to the driver is 1.6 mA .When logic 1 is asserted ,  
the maximum current source from the driver to any  
single monitor sync input is 400 uA .  
Video RGB Analog Video Level  
0.0  
0.7  
V
75? to Ground  
Note1) Schmit-tTriggers Input , Supported 3.3V device H ( & V) sync output from PC  
1.3.2.6 Abnormal Signal Immunity  
The monitor shall not be damaged by improper sync  
timing , pulse duration , or absence of sync , or  
abnormal input signal amplitude ( video and/ or sync too  
large or too small) , or any other anomalous behavior of  
a graphics card video generator when changing modes  
, or when any combination of input signals is removed  
or replaced . Additionally , under these conditions , the  
monitor shall not cause damage to the driving source .  
1.3.2.1 Video Signal Amplitudes  
The three video inputs consist of Red , Green ,  
and Blue signals, each with its own coaxial cable  
terminated at the monitor. These video signals are  
analog levels, where 0 V corresponds to black ,  
and 700 mV is the maximum signal amplitude for  
the respective color, when each signal is  
terminated by a nominal 75.0 ohms .For a given  
monitor luminance levels are measured using this  
defined video amplitude driving a monitor meeting  
the termination requirements . The signal  
amplitude is not to be readjusted to compensate  
for variations in termination impendence.  
Download from Www.Somanuals.com. All Manuals Search And Download.  
ACER H233H  
4
1. Product Specification (continued)  
1.3.4 Monitor Modes and Timing Capability  
1.3.4.1 Format and Timing  
The monitor shall synchronize with any vertical  
1.3.3 User Controls and Indicators  
1.3.3.1 Power On / Off Switch  
The monitor shall have a power control switch  
frequency from 50 to 75 Hz , and with any  
horizontal frequency from 31 to 94KHz. If the input  
frequency is out of the above – specified range,  
the monitor shall display a warning screen  
indicating that the input frequency is out of range.  
Under no circumstances shall any combination of  
input signals cause any damage to the monitor .  
1.3.4.2 Factory Assigned Display Modes  
There are 13 factory pre-set frequency video  
modes. These modes have a factory pre-set  
for all characteristics affecting front-of-screen  
performance. When the system is powered  
on, previously stored screen parameters for a  
pre-defined mode will be recalled if the  
operating mode is one of those stored in  
memory. If the operating mode is not one of  
those stored in memory, the monitor CPU will  
select the PRESET timing for a mode that is  
the next lowest in horizontal scanning  
frequency to the mode being currently used.  
The screen parameters may be adjusted by  
the use of the front bezel controls and then  
may be saved as a user defined mode. The  
monitor shall include all the preset video  
timings shown in the following page.( Please  
see Note. (3) )  
visible and accessible on the front of the monitor .  
The switch shall be marked with icons per IEC 417  
, # 5007 and # 5009.The switch shall interrupt the  
DC supply to the monitor.  
1.3.3.2 Power Indicator LED  
The monitor shall make use of an LED type  
indicator located on the front of the monitor .  
The LED color shall indicate the power states as  
given in Table 1.  
1.3.3.3 On-Screen Display  
The Wistron On Screen Display system shall be  
used, controlled by a Menu button. If the buttons  
remain untouched for OSD turn off time while  
displaying a menu, the firmware shall save the  
current adjustments and exit. Also, if the video  
controller changes video mode while the OSD is  
active, the current settings shall be save  
immediately, the OSD turn off, and new video  
mode is displayed.  
Key  
When No OSD display  
Menu Display  
OSD Display  
1.To select the OSD sub-Menu  
2.Enter select  
MENU  
Speaker Volume/Plus  
(with Audio)  
1.Right or Down selection of the OSD menu  
2.Increase the value after bar selected  
1.Left or up selection of the OSD menu  
2. Decrease the value after bar selected  
Menu exit  
>
<
1.3.4.3 Mode Recognition Pull-in  
Speaker Volume/Minus  
(with Audio)  
The monitor shall recognize preset modes  
within a range of 1KHz whichever is less for  
horizontal ; and within 1Hz for vertical.  
1.3.4.4 User Display Modes  
Auto Adjust Function  
Trigger eColor Management  
Auto  
e
Trigger eColor Management  
Input  
Input source select  
Input source select  
In addition to the factory pre-set video modes,  
provisions shall be made to store up to 9  
user modes. If the current mode is a user  
mode, the monitor shall select its previously  
stored settings. If the user alters a setting, the  
new setting will be stored in the same user  
mode. The user modes are not affected by  
the pre-set command. If the input signal  
requires a new user mode, storage of the new  
format is automatically performed during user  
adjustment of the display (if required).( Please  
see Note.(4) )  
ITEM  
Content  
Volume  
To increase or decrease the sound level  
Brightness  
Contrast  
Adjust backlight luminance of the LCD panel  
Adjust gain of R,G,B signal  
Clock  
Adjust the ratio of dividing frequency of the dot clock  
Adjust the phase of the dot clock  
Focus  
H.Position  
V.Position  
Color temp  
OSD Language  
The active screen is horizontally move right and left  
The active screen is vertically move up and down  
Select three kinds of modes(Warm, Cool, User)  
1.USA-select the language among English, French, Italian, Deutsch, Spanish, ꢀꢁꢂꢃ,  
ꢄꢁꢂꢃ, ꢅꢆ  
2.EMEA-select the language among English, French,Italian, Deutsch, Spanish, Russian,  
Dutch, Finnish  
OSD Position  
OSD Timeout  
Setting  
Adjust the OSD menu position  
The OSD menu show time  
The setting of Input Source, Wide Mode, DDC/CI  
It will show resolution, the frequency of horizontal/vertical synchronizing and S/N  
All data copy from shipment factory data  
Information  
Reset  
Download from Www.Somanuals.com. All Manuals Search And Download.  
ACER H233H  
5
1. Product Specification (continued)  
PRESET PC TIMINGS (ANALOG AND DIGITAL  
INPUTS)  
1.3.5.3 Panel Timing and Interface  
The controller supplied with the monitor shall  
control all panel timing. This controller shall  
Resolution  
(active dot)  
Resolution  
Horizontal  
Vertical  
Nominal Pixel  
Clock (MHz)  
Aspect  
Ratio  
adequately insulate the monitor from the computer,  
so that no possible combination of input signals  
from the computer shall cause damage to the flat  
panel or any other component of the  
Mode  
(total dot) Frequency (KHz) Frequency (Hz)  
VGA  
MAC  
VESA  
640x480@60Hz  
720x400@70Hz  
800x600@56Hz  
800x600@60Hz  
1024x768@60Hz  
1024x768@70Hz  
1152x864@75Hz  
800 x 525  
864x525  
31.469  
35  
59.941  
66.66  
25.175  
30.24  
4:3  
4:3  
900x449  
31.469  
35.156  
37.879  
48.363  
56.476  
67.5  
70.087  
56.250  
60.317  
60.004  
70.069  
75  
28.322  
36.000  
40.000  
65.000  
75.000  
108  
1.8  
1024 x 625  
1056 x 628  
1344x806  
1328x806  
1600x900  
4:3  
SVGA  
XGA  
4:3  
monitor. The LCD panel interface shall support the  
TFT standard.  
4:3  
4:3  
VESA  
SXGA  
4:3  
1.3.6 DC - AC Inverter Requirements  
1280x1024@60Hz 1688x1066  
63.981  
49.702  
55.935  
67.158  
67.500  
60.020  
59.810  
59.887  
59.963  
60.000  
108.000  
83.500  
106.500  
173.000  
148.500  
5:4  
The DC-AC inverter is on the power board. The  
frequencies used by the DC-AC inverter used to power the  
backlight shall be chosen so as to prevent any noticeable  
effects on the flat panel (such as a rolling effect).  
1.3.7 Power Supply Requirements  
WXGA  
WXGA+  
1280x800@60Hz  
1440x900@60Hz  
1680x831  
1904x931  
16:10  
16:10  
1920x1080@60Hz 2576x1120  
1920x1080@60Hz 2200x1125  
HD  
16:9  
The AC to DC converter power supply for the monitor  
shall be an external AC to DC converter ”brick” This brick  
shall have an IEC receptacle for main power input and a  
pin - in ---socket for DC power out. The brick shall provide  
sufficient power for both the monitor and the backlight  
assembly, and shall meet requirements specified in Table  
2.  
PRESET VIDEO TIMING(DIGITAL INPUT)  
CEA-861 H-Active V-Active I/P H-Total H-Back V-Total V-Back H-Freq. V-Freq. P-Freq.  
-c-code  
Porch  
48  
Porch  
33  
(kHz)  
31.5  
(Hz)  
(MHz)  
25.2  
60 27.027  
1
2,3  
4
640  
720  
480  
480  
p
p
p
i
800  
858  
525  
525  
60  
60  
220  
148  
148  
30  
20  
15  
36  
31.5  
45  
1280  
1920  
1920  
720  
1650  
2200  
2200  
750  
60  
60  
60  
74.25  
74.25  
148.5  
5
1080  
1080  
1125  
1125  
33.75  
67.5  
16  
p
Analog input (VGA) treats all timings as PC-timings.  
1.3.5 Controller Requirements  
1.3.5.1 General Requirements  
The monitor shall include a controller capable of  
converting the analog RGB signal from a standard  
1920x1080 resolution video controller in the CPU  
to a signal which can be displayed on the panel.  
The controller will include a PLL,A/D converters,  
LVDS transmitter and other circuitry necessary to  
perform its function. The PLL shall be stable  
enough to ensure that a static image from the CPU  
is placed in the same physical location on the flat  
panel in each frame.  
1.3.5.2 Video Stretching  
The monitor shall contain provisions to “stretch”  
the video signal, so that an input signal from the  
computer in any resolution smaller than 1920 x  
1080 is automatically expanded to fill the entire  
screen.  
Download from Www.Somanuals.com. All Manuals Search And Download.  
ACER H233H  
6
1. Product Specification (continued)  
1.3.8 Display Communications Channel  
1.4.4.Backlight Requirements  
1.4.4.1 General Requirements  
The monitor assembly shall provide a display  
communications channel that conforms to VESA  
DDC2Bi hardware requirements. This configuration  
shall contain the 128-byte (HDMI 256-byte)EDID file  
as specified by VESA EDID standard. The monitor  
should not write to the EDID file for the first two  
minutes of operation following power-up UNLESS  
some action taken by the user or the host CPU forces  
the write (for instance, requesting the serial number  
via the OSD). Furthermore, it is recommended that  
CMOS switches be incorporated to isolate the DDC IC  
from outside connections while the EDID Fault  
Management is being updated. This is to prevent  
corruption of the data by attempts to read the data  
while it is being changed.  
The backlight assembly shall be designed to  
support field replacement at the customer site or  
authorized service center.The lamps shall have a  
continuous operating life of at least 50,000 hours  
at 25℃. The operating life is defined as having  
ended when the illumination of light has reached  
50% of the initial value. The lamps shall extend a  
sufficient amount from the edge of the light guide  
that sputtering over the life of the lamps shall not  
cause degradation of the luminance uniformity  
(such as non-illuminated bands along the edges  
of the display).  
1.4.4.2 Lamps Startup Time  
The backlight lamps shall start about 2 sec of the  
time the monitor power switch is pressed or the  
monitor is restarted from a power - down mode .  
The starting time shall stay about 2 sec. for the  
minimum expected life of the lamps.  
1.3.9 Firmware Update Function (same ISP function)  
The update firmware need through from the D-Sub  
connector, use DDC I2C bus to do update firmware.  
1.4. ELECTRICAL  
1.4.1 General Requirements  
Test conditions are as follows :  
The panel used as the display device shall be an  
Ambient Light ----------------------  
Temperature-------------------------- 10℃  
Inactive Time ----------------------- > 24 hours  
1.4.5.Defects  
1.4.5.1Visual Inspection  
< 1.0 lux  
1920x1080 resolution 23W, TFT LCD. This panel shall  
be approved for use in this monitor.  
1.4.2. Panel Timings  
The controller included with the monitor shall translate  
all video timings from the CPU that meet the timing  
requirements listed in Panel specification into timings  
appropriate for the panel. Under no circumstances  
may the controller supply the panel with timings that  
may result in damage . The controller shall insulate  
the panel from the CPU , so that the panel shall  
always be driven per it's own specification regardless  
of the timings being sent from the CPU.  
The LCD panel shall be inspected with all pixels  
set to white, black, red , green , and blue. The  
color variation, brightness variation , and overall  
appearance must not be perceived as poor quality  
.Areas and / or parameters considered  
questionable shall be subjected to detailed  
measurements .  
1.4.5.2 Display Degradation  
1.4.3.Polarizer Hardness  
Over the life of the product , variation of the  
parameters specified in Panel specification shall  
be maintained within reasonable limits. The panel  
must not exhibit any significant defects while in  
operation ( excluding the CCFL operation ).This  
does not in any way change the warranty given by  
the panel manufacturer .  
The outer face of the front polarizer panel shall be  
covered with a coating with a # 3 hardness value .  
1.4.5.3 Light Leakage  
Except for the active display area , there shall be  
no light emission visible from any angle from any  
other part of the display . For this test , the  
ambient illumination must follow panel's  
specification.  
Download from Www.Somanuals.com. All Manuals Search And Download.  
7
ACER H233H  
1. Product Specification (continued)  
1.4.5.4 Allowable Defects  
No cosmetic defects are allowed except those specified  
Average Diameter smaller of  
Acceptable Number  
Minimum Separation  
(L+W)/2 or L/20+2W  
< 0.1mm  
Non countable  
N / A  
15 mm  
below. The conditions of visual inspections are as  
follows :  
0.1 mm ~ 0.3 mm  
0.31 mm ~ 0.5 mm  
0.51 mm ~ 1.25 mm  
1.26 mm ~ 2.5 mm  
2.51 mm ~ 3.75 mm  
Greater than 3.75 mm  
10  
10  
15 mm  
5
15 mm  
For 23 series  
3
3
25.4 mm  
25.4 mm  
Not applicable  
Viewing distance is to be approximately 35-50cm  
Ambient illumination is to be 300 to 700 lux. Viewing  
angle shall be at 90 degree. Defects not apparent within  
one minute shall be ignored.  
NONE  
Note : Allowable distance between spots of two sizes is the minimum separation  
number for the smaller spot. Therefore, if there are two spots, 1.30mm and 0.4mm  
in diameter, they must be at least 15mm apart.  
1.4.5.5 Defect Terminology  
1.5 Optical Characteristics  
Table 3 gives the descriptive terms used in classifying  
defects.  
Depends on the LCD supplier's spec. Details refer to QA  
Inspection Spec.  
S p o ts o r lin es th at ap p ear d ark in th e d isp lay p attern s an d are  
u su ally th e resu lt o f co n tam in atio n . D efects d o n o t v ary in  
D ark / S p o ts / L in es  
size o r in ten sity (co n trast) w h en co n trast v o ltag e is v aried .  
C o n trast v ariatio n can b e ach iev ed th ro u g h th e u se o f v aryin g  
g ray sh ad e p attern s.  
S p o ts o r lin es th at ap p ear lig h t in th e d isp lay p attern s.  
D efects d o n o t v ary in size o r in ten sity (co n trast) w h en  
co n trast v o ltage is v aried . C o n trast v ariatio n can b e ach iev ed  
th ro u g h th e u se o f v aryin g g ray sh ad e p attern s.  
B rig h t S p o ts / L in es  
W h en th e u n it lig h ts, lin es ap p ear lig h t (w h ite) w ith d isp lay  
p attern s d ark an d d o n o t v ary in size. P h ysical d am ag e to th e  
p o lariz er th at d o es n o t d am age th e g lass  
P o lariz er S cratch  
P o lariz er D en t  
W h en th e u n it ligh ts, sp o ts ap p ear lig h t (w h ite) w ith d isp lay  
p attern s d ark an d d o n o t v ary in size. P h ysical d am ag e to th e  
p o lariz er th at d o es n o t d am age th e g lass.  
H o riz o n tal o r d iag o n al lin es th at ap p ear g ray w ith th e d isp lay  
p attern s d ark an d m ay h av e resu lted fro m an “o u t o f co n tro l”  
ru b b in g p ro cess o n th e p o lyim id e o r “w av es” o n th e B E F s o r  
p rism sh eets.  
R u b b in g L in e  
N ew to n R in g  
M o ttlin g  
T h e rain b o w ” effect cau sed b y n o n -u n ifo rm cell th ick n ess.  
W h en th e u n it lig h ts, v ariatio n / n o n  
u n ifo rm ity  
(sp lo tch in ess) ap p ears ligh t (w h ite) w ith th e d isp lay an d  
m ig h t v ary in siz e.  
W h en th e u n it lig h ts, lin e(s) in th e m o n ito r (v ertical) o r m ajo r  
(h o riz o n tal) ax is ap p ear d im , b u t n o t co m p letely o n o r o ff.  
D im L in e  
W h en th e u n it lig h ts, lin es in b o th th e m in o r an d m ajo r ax is  
d o n o t ap p ear.  
C ro ss L in es O ff  
B rig h t / D ark D o t  
A
su b  
p ix el (R ,G ,B d o t) stu ck o ff / o n (electrical).  
1.4.5.6 Smudges, Streaks and Smears  
When viewing the panel oriented so as to maximize  
reflected light , there shall be no visible smudging ,  
streaking, smearing or other non-uniformity from  
contaminants ,fingerprints, or defects in any of the visible  
surfaces. This is independent of whether the unit is  
operating or off .  
1.4.5.7 Other Defects  
Undefined defects that are considered to be rejectable  
will be reviewed as they become apparent. These  
panels will be referred to the Corporate / Manufacturer  
Purchasing Agreement for disposition.  
1.4.5.8 LCD Inspection  
Put LCD panel on inspection table and illuminate the  
panel with a daylight fluorescent lamp located above  
the panel surface such that the luminance at the LCD  
panel is between 1000 lux and 1500 lux .Defect limits  
are given in Table 4 .  
Table 4  
Download from Www.Somanuals.com. All Manuals Search And Download.  
8
ACER H233H  
2 OSD Menu  
The description for control function  
2.1 MAIN OSD MENU  
a. Display OSD menu when user press “MENU” button on  
front bezel  
b. Layout as following figure 1-1  
d. The definition of size and color for main menu  
e Icons instruction  
Function  
Picture  
OSD  
Setup  
Information  
Status  
Non-Focus  
Focus  
Focus on  
Item-page  
Figure 1-2 color & size definition for function Icons  
Download from Www.Somanuals.com. All Manuals Search And Download.  
 
2. OSD Manu (continued)  
9
ACER H233H  
f. Item page status  
c. The definition of color & size for the acer eColor management  
OSD  
Status  
Display type  
Non-focus  
Item focused  
Item selected  
The description for control function  
Key  
Function description  
Power off the monitor  
Power  
<
>
Moving the focus up  
Moving the focus down  
Enter to the item page  
1. It has no function at the information  
page.  
Menu  
Auto  
e
Exit the OSD menu  
Trigger the acer eColor Management  
d. Icons introduction  
Function description  
Power off the monitor  
Moving the focus up  
Moving the focus down  
Scenario mode:  
Select function item for adjustment  
Exit from the item page to icon place  
Trigger the acer eColor Management  
Key  
Function description  
Power off the monitor  
Power  
<
>
Decrease the setting value for target item  
Increase the setting value for target item  
No function  
Menu  
Auto  
e
Mode  
Contrast (OSD)  
(User defined)  
50 (slope 1.0)  
50 (slope 1.0)  
60 (slope 1.04)  
56 (slope 1.025)  
Brightness (OSD)  
(User defined)  
44 (61%)  
Exit from item selected status  
Trigger the acer eColor Management  
User mode  
Text mode  
Standard mode  
Graphics mode  
Movie mode  
77 (85%)  
97 (98%)  
77 (85%)  
Note: The contrast/brightness value of modes should be  
adjusted by requirement.  
Acer eColor management  
a. Display acer eColor Management OSD when user press  
“e” button on the front bezel or trigger this function in OSD  
menu/picture page.  
Operation method:  
Step 1: Press “e” key to initial scenario mode.  
Step 2: Press “>” or “<” key to select the mode you want (not  
cyclic).  
b. Layout as following figure 1-8  
Step 3: If user has NO action after Step 2, OSD will disappear  
after 10 sec and do “auto scan” (mode keep in original  
one, no change).  
If user press “e” key after Step 2, it means user confirm  
the chosen mode and monitor will do “auto scan” as  
well.  
Download from Www.Somanuals.com. All Manuals Search And Download.  
ACER H233H  
2. OSD Manu (continued)  
10  
Volume management OSD  
Power turn-off  
a. Display volume management OSD, when user press “<” or “>”  
button on front bezel.  
b. Layout as following figure 1-10, key operation at items page  
(No item selected)  
Key  
Function description  
Close volume OSD  
Menu  
Auto  
e
input  
<
>
Volume down  
Volume up  
Stand-by then Input Signal  
c. The definition of color & size for the volume management  
OSD and file  
Normal Operation then remove Signal  
LED Light Effect in Soft-key  
Power ON  
Appendix  
*Multiple language  
Normal operation  
Download from Www.Somanuals.com. All Manuals Search And Download.  
2. OSD Manu (continued)  
11  
ACER H233H  
Download from Www.Somanuals.com. All Manuals Search And Download.  
ACER H233H  
12  
3. Exploded Diagram  
3.1 Packing Exploded Diagram  
Download from Www.Somanuals.com. All Manuals Search And Download.  
 
13  
ACER H233H  
3. Exploded Diagram (continued)  
3.2 Product Exploded Diagram  
Download from Www.Somanuals.com. All Manuals Search And Download.  
14  
ACER H233H  
4. Assembly and Disassembly Procedures  
4.1 Assembly procedures:  
Fix the speaker and speaker cable, The white line  
Connect the cable between power board(P802)  
and interface board (P301)  
S4  
S1  
in the left ,the red line in the right.  
Connect the cable between power board(P003) and  
interface board(P308)  
Connect the USB board cable(P301) into interface  
board(P805)  
Connect speak cable into interface board(P001)  
Connect the FFC cable into interface board  
Connect the power key cable(P601)into interface  
board(P309)  
Turn the monitor faced down and put it on the  
bracket chassis module till both parts firmly  
Connect FFC cable to LCD panel. There are  
two locks over here when plugging in should be  
noticed.  
S5  
P003  
P309  
P308  
P301  
FFC  
P001  
P805  
P802  
Use a Phillips-head screwdriver screwed the  
No.1~4 screws till that power board and bracket  
chassis base firmly attached.(No1~3 screw  
size=M3x6; No4 screw size=M4x8;  
S2  
Plug in parallel direction  
Torque=9~10KGFxCM).  
2
1
Angel < 5 degrees  
3
4
Use a Phillips-head screwdriver screwed the  
No.1~2 screws till that interface board and bracket  
chassis base firmly attached.  
S3  
Take lamp cables out from the holes shown as the  
photo.  
S6  
(No1~2 screw size=M3x6; Torque=9~10KGFxCM).  
1
2
Download from Www.Somanuals.com. All Manuals Search And Download.  
 
15  
ACER H233H  
4. Assembly and Disassembly Procedures (continued)  
Plug 2 lamp cables to the connectors of inverter  
board.  
Use a Phillips-head screwdriver screw 3 screws  
S11  
S7  
(No1~2 Screw Size=M3x10;No3 screw size=M3*6  
Torque=4~6KGFxCM).  
3
2
1
Use a Hex-head screwdriver screwed the DVI and  
D-SUB connectors (No.1~4 Hex Nut screws  
Size=M3x8;Torque=4~6KGFxCM).  
S8  
Stick the safety tape  
S12  
Connect OSD key cable into interface board(P306)  
2
1
3
4
1
Take out the USB cable to through out the hole.  
S9  
2
3
Use a Phillips-head screwdriver screwed the  
No.1~2(No1~2 screw size=M3x6; Torque=9~10  
KGFxCM).  
S13  
Use a Phillips-head screwdriver screw 4 screws  
(No1~4 Screw Size=M3x6;  
S10  
Connect the USB cable.  
Torque=2.5~3KGFxCM).  
1
2
4
1
2
3
Download from Www.Somanuals.com. All Manuals Search And Download.  
16  
ACER H233H  
4. Assembly and Disassembly Procedures  
Use a Phillips-head screwdriver screwed the  
Stick the power key cable with tape.  
S17  
S14  
No.1(No1screw size=M3x4; Torque=5+/-1  
KGFxCM).  
1
Connect the power key cable.  
S15  
Connect the power key board from front bezel,  
Use a Phillips-head screwdriver screwed the  
No.1~2 screws(No1~2 screw size=M2x3.3;  
Torque=1~1.5 KGFxCM).  
Put a rear cover on the assembled unit and  
press on force mechanisms locked and firmly  
attached.  
S18  
4
4
3
3
2
1
2
1
2
1
Fix with the OSD key board on the front bezel  
Use a Phillips-head screwdriver screw 1 screw  
(No1 Screw Size=M3x10;  
S16  
S19  
Torque=7.5~9.5KGFxCM).  
1
Download from Www.Somanuals.com. All Manuals Search And Download.  
17  
ACER H233H  
Assemble the stand upper side to the rear cover  
through the way of screwing 4 screws till both  
units firmly attached.  
Stick POP label on the correct position the same  
as below photo  
S23  
S20  
(No1~4 Screw Size=M4x10; Torque=12+/-  
KGFxCM).  
1
2
3
4
Assemble the hinge cover into both two sides.  
S21  
Take a LDPE+EPE bag to cover the LCD  
monitor.  
S24  
Stick a screen card on the front bezel with two  
tapes.  
S22  
Take two cushion foams; one is held the top side  
of LCD monitor, and another is held the bottom  
side.  
S25  
Download from Www.Somanuals.com. All Manuals Search And Download.  
18  
ACER H233H  
4. Assembly and Disassembly Procedures (continued)  
Put accessories of stand, DVI cable, and  
S26  
user’s manual ,power cable on specific  
positions as photo below.  
Move previous assembled parts into the carton  
then stick Vista and feature label on the carton  
then packing the carton  
S27  
Download from Www.Somanuals.com. All Manuals Search And Download.  
19  
ACER H233H  
4. Assembly and Disassembly Procedures (continued)  
4.2 Disassembly procedures  
Open the carton with a proper tool.  
S1  
Put returned unit on a protective cushion,then  
remove LDPE+EPE bag.  
S4  
Tear off tapes to remove the screen protector  
card then turn over the LCD monitor (screen  
faced down),  
Take out all accessories including D-SUB  
cable power cable, DVI cables, user’s  
manual, and packing material from the carton.  
(Note: It depends on whether users  
returning the accessories.)  
S2  
Disassemble the stand cover.  
S5  
Use a Phillips-head screwdriver unscrew 4 screws  
to release the stand base.  
S6  
(No1~4 Screw Size=M4x10;  
Torque=12 1KGFxCM).  
Take off two cushion foams  
S3  
1
2
3
4
Use a Phillips-head screwdriver unscrew 1 screw  
(No1 Screw Size=M3x10; Torque=7.5~9.5KGFxCM).  
S7  
1
Download from Www.Somanuals.com. All Manuals Search And Download.  
20  
ACER H233H  
4. Assembly and Disassembly Procedures (continued)  
Put the dissembled monitor closed to by myself  
Separating all of the locking mechanism of the  
S12  
S8  
front bezel in turn.  
RIGHT SIDE  
D
OWN  
U
P
S
I
D
E
S
I
D
E
LEFT SIDE  
Turn over the LCD monitor (screen faced up).  
S9  
Wedge your finger between the front bezel and  
the panel, then pry up on the front bezel to  
disengage the locking mechanism.  
Note: The dissemble method of front bezel is  
as the below photos description, although the  
photos from S9 to S13 are not suitable for this  
model.  
S10  
Hold the one upside corner of the front bezel after  
separating the upside of the front bezel  
Using properly force to pull up front bezel that  
will let the locking mechanism of left side, right  
side and down side separated.  
S13  
Insert steel rule between panel and front bezel  
.Using properly force to let the locking  
mechanism of front bezel and rear cover  
separated  
S11  
Download from Www.Somanuals.com. All Manuals Search And Download.  
21  
ACER H233H  
4. Assembly and Disassembly Procedures (continued)  
Hold one side of down side that had been  
separated from front bezel  
Use a Phillips-head screwdriver unscrewed the  
No.1(No1screw size=M3x4; Torque=5+/-1  
KGFxCM).  
S17  
S14  
Use properly force to pull up front bezel  
1
Use a Phillips-head screwdriver unscrewed the  
No.1~2(No1~2screw size=M3x6; Torque=9~10  
KGFxCM).  
S18  
Unplug the USB cable and OSD key cable.  
1
2
Use a Phillips-head screwdriver unscrewed the  
No.1~2 screws(No1~2 screw size=M2x3.3;  
Torque=1~1.5 KGFxCM).  
S15  
Unhook the power key board from front bezel,  
disconnect the power key cable.  
S19  
Use a Hex-head screwdriver unscrewed 4 screws to  
release the DVI and D-SUB connectors  
(No1~4Hex Nut screws  
Size=M3x8;Torque=4~6KGFxCM).  
2
1
2
1
3
4
Tear off shield safety tape  
Disconnect the OSD key cable  
S20  
Use a Phillips-head screwdriver unscrewed the  
No.1~3 screws to release the power connector and  
HDMI connector.  
(No1~2 screw size=M3x10; No 3 screw size=M3x6  
Torque=4~6 KGFxCM).  
1
2
3
3
2
1
Download from Www.Somanuals.com. All Manuals Search And Download.  
22  
ACER H233H  
4. Assembly and Disassembly Procedures (continued)  
Use a Phillips-head screwdriver unscrewed the  
Examine the panel surface accoring to inspection  
S21  
S25  
No.1~4 screws  
criteria. Put it aside.  
(No1~4 screw size=M3x5; Torque=2.5~3 KGFxCM).  
2
1
Use a Phillips-head screwdriver unscrewed the  
No.1~2 screws to release the interface board.  
(No1~2 screw size=M3x6; Torque=9~10KGFxCM).  
4
3
S26  
Disconnect the lamps cable  
S22  
Take out lamp cables right through the No.1-2  
square holes and separate the bracket chassis  
module and LCD panel apart.  
1
2
Use a Phillips-head screwdriver unscrewed the  
No.1~4 screws to disassemble the power board.  
(No 1~3 screw size=M3x6; No 4 screw  
S27  
1
2
size=M4x8; Torque=9~10KGFxCM).  
2
1
Use long nose pliers to separate plastic hook  
S23  
S24  
3
4
Disconnect all of the cable  
Disconnect the FFC cable to the connector of  
panel.  
S28  
Use finger to push the lock according to arrow  
direction then take out the FFC cable  
P003  
P309  
P308  
P301  
FFC  
P001  
P805  
P802  
Download from Www.Somanuals.com. All Manuals Search And Download.  
23  
ACER H233H  
5. Troubleshooting  
5.1.No.display of screen (Screen is black, color of LED is amber)  
Does OSM display when you push  
“MENU key.  
No  
Proceed "No OSM display" section.  
When a signal isn't being inputted, it is  
indicated with "No Signal Input". it is  
indicated with "Out Of Range" at the time  
of the frequency that it can't be  
distinguished.  
Yes  
Check if the sync signal from computer is  
output and if the video cable is connected  
normally.  
Input the sync signal of computer, or change  
the cable.  
NG  
OK  
Proceed "checking the resolution change IC  
movement" section.  
Download from Www.Somanuals.com. All Manuals Search And Download.  
 
24  
ACER H233H  
5. Troubleshooting (continued)  
5.2 Nothing display on screen (screen is black, color of LED is blue)  
Is backlight lit?  
NG  
Refer "Checking the backlight unit" section"  
OK  
Check the video cable for failure. Check the host for output signal is all  
black or not.  
Does computer output RGB video signals?  
1) Change pattern of video signal output on the host.  
2) Reconnect the video cable.  
3) Change the video cable.  
NG  
OK  
Check OSM menu is display on screen  
when you push the "MENU" key.  
Check if the LCD video signal cable is connected between the Interface  
Board and LCD module.  
NG  
OK  
Failure Point  
The LCD video signal cable is disconnected.  
NG  
OK  
Proceed "Abnormal sreen" dection"  
Next Page  
Download from Www.Somanuals.com. All Manuals Search And Download.  
25  
ACER H233H  
5. Troubleshooting (continued)  
5.2 Nothing display on screen (screen is black, color of LED is blue)continued  
Continue  
Check the 5V power supply for  
P301 pin 4,5,6.  
NG  
Check the I304 pin2 if  
voltage is 3.3V  
Proceed "Checking the DC/DC converter  
circuit" section.  
NG  
OK  
Proceed "Checking the DC/DC converter  
circuit" section.  
Check the I305 pin2 if  
voltage is 1.2V  
NG  
OK  
Failure Point  
1) FB301 is open..  
Check the I301 pin2 if  
voltage is 5V  
NG  
OK  
OK  
Check if the voltage  
between I301 pin2 and  
pin3 is above -0.7V  
OK  
Failure Point  
I301 is failure.  
Check the input voltage level whether was changed when  
pressed function keys on the P309 pin1  
NG  
Check if the voltage on I308 pin 108 that is  
from 3.3V to 0V.  
Failure Point  
OK  
NG  
OK  
1) Printed wire broke between P309 pin 1  
and I308 pin 108.  
Failure Point  
I308 is failure  
Check the P307 all LVDS signals.  
Failure Point  
NG  
1) Printed wire broke between P307 and  
I308 LVDS signals.  
2) I308 is failure.  
OK  
Failure Point  
1) The LVDS cable broke between P307  
and LCD module.  
2) LCD module is failure.  
Download from Www.Somanuals.com. All Manuals Search And Download.  
26  
ACER H233H  
5. Troubleshooting (continued)  
5.3 Checking the back light unit  
Is +22V supplied to inverter PWB ? (by the  
power board)  
Failure Point  
NG  
1) Power board of Inverter part failure.  
OK  
Check the BKLT_EN signal of the DC input  
P301 pin 2 at TTL high level.  
Failure Point  
NG  
1) printed wire broke between P301 pin2,  
R304 and I308 pin 101.  
2) I308 is failure.  
OK  
Check the BKLT_ADJ signal of the input  
P301 pin3 from I308 pin102 is a PWM  
signal.  
Failure Point  
NG  
1) printed wire broke between P301 pin3,  
R501 and I308 pin102.  
OK  
Failure Point  
1) Back light unit of LCD module is failure.  
2) Inverter Cable disconnect  
Download from Www.Somanuals.com. All Manuals Search And Download.  
27  
ACER H233H  
5. Troubleshooting (continued)  
5.4 Abnormal screen for VGA  
Check the R, G, B video signal from computer  
input on P302 of D-sub connector.  
Failure Point  
NG  
OK  
1) No R, G, B video signals output from host  
computer, check computer.  
2) Video signal cable disconnection.  
Check the R, G, B input video signals on I308  
pin25, 27, 30 respectively that their level is 0.0 to  
0.7Vp-p.  
NG  
Failure Point  
OK  
In the case of the Red signal. (A Green and Blue  
signal is the same path, too.)  
1) Printed wire broke between P302 pin1 and  
I308 pin30.  
2) Video cable is failure.  
3) FB315,FB306,R327,C315 is open.  
4) R326,C329 is short or open.  
Check all LVDS signals being output to P307  
from I308?  
NG  
Failure Point  
OK  
Printed wire broke between I308 and P307.  
Proceed "Checking the resolution change IC  
movement" section.  
Download from Www.Somanuals.com. All Manuals Search And Download.  
28  
ACER H233H  
5. Troubleshooting (continued)  
5.5 Abnormal screen (For DVI and the same for HDMI)  
Check the DVI video signal from computer input  
on P303 of DVI connector.  
Failure Point  
NG  
1) No DVI video signals output from host  
computer, check computer.  
2) DVI Video signal cable disconnection.  
OK  
Check the DVI input video signals on I308 pin  
12,13,14,15,16,17,18,19 respectively that  
differential input voltage is 150 to 1200mV, and  
input commond mode voltage is 3.3V.  
Failure Point  
NG  
In the case of the DVI_RX0+/- signal. (A  
DVI_RX1+/-, DVI_RX2+/- and DVI_RXC+/-  
signal is the same path, too.)  
OK  
1)Printed wire broke between P303 pin 17, 18 and  
I308 pin 12. 13.  
2) Video cable is failure.  
3) R350, R355 open.  
Check all LVDS signals being output to P307  
from I308?  
Failure Point  
NG  
Printed wire broke between I308 and P303.  
OK  
Proceed "Checking the resolution change IC  
movement" section.  
Download from Www.Somanuals.com. All Manuals Search And Download.  
29  
ACER H233H  
5. Troubleshooting (continued)  
5.6 Abnormal OSM display adjust problem  
Check the input I2C signal whether is changed when pressed  
function keys on the P306 pin 4, 5  
Failure Point  
NG  
OK  
1) Function key wire disconnection.  
2) Function key wire is failure.  
3) Function key board is failure.  
Check the input I2C signal of I308 pin 50, 51 whether is  
changed when pressed function keys.  
NG  
Failure Point  
1) Printed wire broke among P306 pin4, R368 and I308 pin51  
2) Printed wire broke among P306 pin5 ,R362 and I308 pin50  
3) C393, C394 is short.  
OK  
4) D352, D353 is short  
Failure Point  
I308 is failure.  
Download from Www.Somanuals.com. All Manuals Search And Download.  
30  
ACER H233H  
5. Troubleshooting (continued)  
5.7 Abnormal plug and play operation for VGA  
Confirm the host computer supplies DDC2B mode.  
NG  
Failure Point  
OK  
The host machine is not communicatiog in DDC2B mode.  
Check the voltage on P302 pin 9 that is power DC 5 V.  
NG  
Failure Point  
TheVideo cable is failure.  
OK  
Check the signal on P302 pin12, 15 that is serial data  
/ clock signal.  
NG  
Failure Point  
OK  
The Video cable is failure.  
Check the output signal of serial data / clock on I308  
pin 59, 58.  
Failure Point  
NG  
OK  
I308 is failure.  
Failure Point  
1) Printed wire broke among I308  
pin58,59,R429,R434,R320,R321 and P302 pin12,15  
2) I308 maybe failure.  
3) R314 ,R315 is open.  
4) D306 or D308 or C320 or C321 is shorted.  
Download from Www.Somanuals.com. All Manuals Search And Download.  
31  
ACER H233H  
5. Troubleshooting (continued)  
5.8 Abnormal plug and play operation (For DVI and the same for HDMI)  
Confirm the host computersupplies DDC2B mode.  
Failure Point  
NG  
The host machine is not communicatiog in DDC2B  
mode.  
OK  
Check the voltage on P303 pin14 that is power DC 5 V.  
NG  
Failure Point  
OK  
The Video cable is failure.  
Check the voltage on P303 pin 16 that is 4.5V.  
Failure Point  
NG  
1) Printed wire broke between P303 pin 14 and pin 16.  
OK  
Check the voltage on P303 pin 7, 6 that is serial data /  
clock signal.  
NG  
Failure Point  
OK  
The Video cable is failure.  
Check the output signal of serial data / clock on I308  
pin 122,121  
Failure Point  
NG  
OK  
I308 is failure.  
Failure Point  
1) Printed wire broke between I308 pin121, 122,  
,R410, R414, R344, R345 and P303 pin7,6  
2) I308 maybe failure.  
3) R338, R339 is open.  
4) D320 or D321 or C339 or C342 is shorted.  
Download from Www.Somanuals.com. All Manuals Search And Download.  
32  
ACER H233H  
5. Troubleshooting (continued)  
5.9 Checking the interface circuit of sync signal  
5.9.1 Checking the control circuit of horizontal sync pulse  
Check the horizontal sync signal on P302 pin13 TTL  
level.  
NG  
Failure Point  
OK  
Video cable is failure.  
Check the horizontal sync signal on I308 pin 22 TTL  
level.  
Failure Point  
NG  
OK  
1) Printed wire broke between P302 pin13 and  
I308 pin22.  
2) FB304 , R405 is open.  
3) D307 ,R319 or C322 is short.  
Failure Point  
Proceed "Checking the resolution change IC movement"  
section.  
5.9.2 Checking the control circuit of vertical sync pulse  
Check the vertical sync signal on P302 pin14 TTL level.  
NG  
Failure Point  
OK  
Video cable is failure.  
Check the horizontal sync signal on I308 pin21 TTL  
level.  
Failure Point  
NG  
OK  
1) Printed wire broke between P302 pin14 and  
I308 pin21.  
2) FB305 or R331 is open.  
3) D310,R318 or C313 is short.  
Failure Point  
Proceed "Checking the resolution change IC movement"  
section.  
Download from Www.Somanuals.com. All Manuals Search And Download.  
33  
ACER H233H  
5. Troubleshooting (continued)  
5.10 Checking the resolution change IC movement  
Check +3.3V supply on I304 pin2.  
NG  
Proceed " Checking the DC/DC converter circuit" section.  
OK  
Check +1.2V supply on I305 pin 2.  
NG  
Proceed " Checking the DC/DC converter circuit" section.  
OK  
Check X301 27MHz clock input to I308 pin 127 and 128 at TTL level.  
Failure Point  
1) Printed wire broke between X301 and I308 pin 127, 128.  
2) C351, C352 is short or open.  
3) R507 is open.  
NG  
OK  
4) X301 failure.  
Failure Point  
1) Printer wire broke between I308 pin 125 and  
R437  
3) I308 is failure.  
Check I308 pin 125 RSTB signal is high level at normal operation.  
NG  
OK  
Check I308 pin 115,116,117,118  
SPI signal.  
Failure Point  
NG  
OK  
1) Printed wire broke between I308 pin 115, 116, 117,118 and I309 pin 1,2,  
5,6.  
2) I309 is failure.  
Failure Point  
I308 failure.  
Download from Www.Somanuals.com. All Manuals Search And Download.  
34  
ACER H233H  
5. Troubleshooting (continued)  
5.11 Checking the DC/DC converter circuit  
Check the 5V is output from P301 pin 4,5,6.  
Failure Point  
NG  
OK  
1) Power wire disconnection.  
2) Power board is failure.  
Check the 5V is input to I304 pin3.  
NG  
Failure Point  
OK  
1) Printed wire broke between P301 pin 4,5,6  
and I304 pin3.  
Check the 3.3V is output from I304 pin2, 4.  
Failure Point  
NG  
1) I304 is failure  
2) C306 or C308 short.  
OK  
Check the 3.3V is input to I305 pin3.  
Failure Point  
NG  
OK  
1) Printed wire broke between I304 pin2. 4 and  
I305 pin3.  
Check the 1.2V is output from I305 pin2,4.  
Failure Point  
NG  
1) I305 is failure  
2) C310 or C311 short.  
OK  
Failure Point  
1) FB311 or FB312 or FB319 or FB320 is open.  
Download from Www.Somanuals.com. All Manuals Search And Download.  
35  
ACER H233H  
6. Firmware Upgrade Process  
6.1 Hardware Configuration  
If it shows “No USB Device”, there is a problems with  
communication .you should confirm your USB device  
whether be detected by your PC device management or  
reconnect the USB cable again.  
Connect VGA  
cable between  
monitor and kit  
Connect USB  
and VGA  
cable between  
PC and kit  
Step-3Select ISP type: Serial Flash  
Select ISP icon.  
6.2 Realtek F/W Configuration:  
Step-1 Launch the utility of “DebugTool_V6.2.exe”  
Step-2 Select “USB”  
Step-4 Follow up the red square indication  
Select P-flash and Auto  
Download from Www.Somanuals.com. All Manuals Search And Download.  
 
36  
ACER H233H  
6. Firmware Upgrade Process (continued)  
Step-5 Select “64K” icon to load firmware image. There are two  
HEX files. You only need to select “64K” to choose  
“H233H_EMEA.H00.hex” and  
Check firmware version  
Turn off the power,then press force on “ POWER ” and “ E ”  
button at the same time then press on “ MENU ”button to  
enter factory mode  
“H233H_EMEA.H01.hex” will be loaded  
in “64~96” automatically.  
Note: Please pay attention ,Don’t change any parameter  
which is measured by precise machine before shipping out  
Step-6Press  
button  
The screen will show “PASS”  
Download from Www.Somanuals.com. All Manuals Search And Download.  
37  
ACER H233H  
7. Writing EDID Process  
Writing EDID for VGA and DVI  
Hardware Configuration:  
1. Connect the PRINTER PLUG of DDC FIXTURE with the  
printer port of Desktop PC.  
S1 Chose the folder:” X233H-H233H-VGA&DVI “  
Double click “ Acer_1A1D_RLT.EXE “  
2. Plug USB A PLUG of DDC FIXTURE to USB socket of  
Desktop PC  
3
Use DVI cable connect to the DVI socket of monitor  
of DDC FIXTURE.  
4
Take a video cable then connect the D-SUB PLUG and the  
D-sub socket of monitor.  
5. Re-confirm all the connectors are connected well.  
PARALLEL CONNECTION  
S2 Select Model: Key in password”cedid” then select  
model which one you want to write EDID code that it  
depends on panel type.  
USB CONNECTION  
DVI CONNECTION  
VGA CONNECTION  
S1 Open EDID Write protection function  
Turn off the power,then press force on “ POWER ” and “ E  
” button at the same time then press on “ MENU ”button to  
enter factory mode.  
Select “EDID WP” to let it be off.  
Note: Please pay attention ,Don’t change any parameter  
which is measured by precise machine before shipping  
out.  
cedid  
SS:MEANS SAMSUNG PANEL  
Download from Www.Somanuals.com. All Manuals Search And Download.  
 
38  
ACER H233H  
7. Writing EDID Process (continued)  
S3 Choose "WRITE" from menu then select "Scan S/N  
And Write EDID And Test DDC”  
Hardware Configuration:(Writing EDID for HDMI port’s)  
1. Connect the PRINTER PLUG of DDC FIXTURE with the  
printer port of Desktop PC.  
2. Plug USB A PLUG of DDC FIXTURE to USB socket of  
Desktop PC  
3
Use DVI transfer HDMI cable connect between of the DVI  
EXTENDING SOCKET and Monitor(Writing EDID for HDMI  
port)  
4
Take a video cable then connect the D-SUB PLUG and the  
D-sub socket of monitor.  
5. Re-confirm all the connectors are connected well.  
PARALLEL CONNECTION  
USB CONNECTION  
S4 Key in series number in the input column and input 2  
column  
VGA CONNECTION  
Press write button after key in S/N  
HDMI TRANSFER DVI CONNECTION  
S5 When EDID was written successfully that will show below  
message on the screen  
Entering Factory mole to let “EDID WP” be off  
Writing EDID procedure  
S1 Choose the folder “X233H-H233H-HDMI”  
Double click “ AcerHDMI_RLT “  
The writing process same as writing VGA and DVI  
process.  
Download from Www.Somanuals.com. All Manuals Search And Download.  
39  
ACER H233H  
7. Writing EDID Process  
S5 When EDID was written successfully that will show below  
message on the screen  
Entering Factory mole to let “EDID WP” be off  
Writing EDID procedure for 1A1H  
S1 Choose the folder “X233H-H233H-1A1H”  
Double click “ Acer_1A1H_RLT “  
The writing process same as writing VGA and DVI  
process.  
1A1H  
S5 When EDID was written successfully that will show below  
message on the screen  
Hardware Configuration:  
1. Connect the PRINTER PLUG of DDC FIXTURE with the  
printer port of Desktop PC.  
2. Plug USB A PLUG of DDC FIXTURE to USB socket of  
Desktop PC  
3
Use DVI transfer HDMI cable connect between of the DVI  
EXTENDING SOCKET and Monitor  
4
Take a video cable then connect the D-SUB PLUG and the  
D-sub socket of monitor.  
5. Re-confirm all the connectors are connected well.  
PARALLEL CONNECTION  
USB CONNECTION  
VGA CONNECTION  
HDMI TRANSFER DVI CONNECTION  
Download from Www.Somanuals.com. All Manuals Search And Download.  
Download from Www.Somanuals.com. All Manuals Search And Download.  
 
1
1
22uF/50V  
2
1
2
1
1
2
3
2.2uF/50V  
2
1
1uF/50V  
0.47U/275V  
3
1
2
4
0.1U/275V  
2
1
2.2uF/50V  
GND-2  
0.01u/1KV  
2
1
3
2
100U/450V  
1
3
2
1
3
2
2
1
1
2
3
2
2
3
3
2
2
3
470U/35V  
1000U/16V  
1000U/16V  
2
1
2
1
1
3
2
1
2
1
10  
7
VREF  
INL  
15  
4
PVDDR  
PVDDL  
12  
INR  
MMSZ5232BS  
MMSZ5232BS  
Download from Www.Somanuals.com. All Manuals Search And Download.  
1
3
1
1
4
1
GND  
4
VSS  
4
3
2
1
4
3
2
1
Download from Www.Somanuals.com. All Manuals Search And Download.  
16  
17  
1
2
3
3
3
1
2
1
2
Download from Www.Somanuals.com. All Manuals Search And Download.  
Download from Www.Somanuals.com. All Manuals Search And Download.  
R352  
4K7_5%  
R0402  
R353  
4K7_5%  
R0402  
R354  
10K_5%  
R0402  
Download from Www.Somanuals.com. All Manuals Search And Download.  
2
1
1
3
R459  
NC/4K7_5%  
R0402  
R374  
NC/4K7_5%  
R0402  
R375  
NC/4K7_5%  
R0402  
1
2
3
4
5
6
7
8
102  
101  
100  
99  
98  
97  
96  
95  
94  
93  
92  
91  
90  
89  
88  
87  
86  
85  
84  
83  
82  
81  
80  
79  
78  
77  
76  
75  
74  
73  
72  
71  
70  
69  
68  
67  
66  
65  
DP_VDD/TMDS_VDD  
TMDS_REXT  
LANE0P/RX2P_0  
LANE0N/RX2N_0  
LANE1P/RX1P_0  
LANE1N/RX1N_0  
LANE2P/RX0P_0  
LANE2N/RX0N_0  
LANE3P/RXCP_0  
LANE3N/RXCN_0  
DP_GND/TMDS_GND  
LANE0P/RX2P_1  
LANE0N/RX2N_1  
LANE1P/RX1P_1  
LANE1N/RX1N_1  
LANE2P/RX0P_1  
LANE2N/RX0N_1  
LANE3P/RXCP_1  
LANE3N/RXCN_1  
DP_VDD/TMDS_VDD2  
AVS0  
SD3/ SPDIF3/TCON[10]/GPIO/PWM0/AR3P  
GPIO/PWM5/TCON[0]/AG1N  
GPIO/PWM4/TCON[12][3]/AG1P  
GPIO/PWM3/TCON[11][6]/TXE0-_10b/AG2N  
GPIO/PWM2/TXE0+_10b/AG2P  
HDMI1_D0-  
HDMI1_D0+  
HDMI1_D1-  
HDMI1_D1+  
HDMI1_D2-  
HDMI1_D2+  
HDMI1_CK+  
HDMI1_CK-  
DVS/GPIO/PWM1/TXE1-_10b/AG3N  
DCLK/GPIO/PWM0/TXE1+_10b/AG3P  
DHS/TXE0-_8b/TXE2-_10b/ACLKN  
DENA/TXE0+_8b/TXE2+_10b/ACLKP  
ARED0/ARED2/TXE1-_8b/TXEC-_10b/AB1N  
ARED1/ARED3/TXE1+_8b/TXEC+_10b/AB1P  
ARED2/ARED4/TXE2-_8b/TXE3-_10b/AB2N  
ARED3/ARED5/TXE2+_8b/TXE3+_10b/AB2P  
ARED4/ARED6/TXEC-_8b/TXE4+_10b/AB3N  
ARED5/ARED7/TXEC+_8b/TXE4+_10b/AB3P  
ARED6/AGRN2/TXE3-_8b/TXO0-_10b/BR1N  
ARED7/AGRN3/TXE3+_8b/TXO0+_10b/BR1P  
PGND  
9
10  
11  
12  
13  
14  
15  
16  
17  
18  
19  
20  
21  
22  
23  
24  
25  
26  
27  
28  
29  
30  
31  
32  
33  
34  
35  
36  
37  
38  
RX0N  
RX0P  
RX1N  
RX1P  
RX2N  
RX2P  
RXCP  
RXCN  
C362  
0.1uF_16V  
CM0402  
PVCC_3V3  
PVCC  
AGRN0/GPIO/AGRN4/TXO0-_8b/TXO1-_10b/BR2N  
AGRN1/GPIO/AGRN5/TXO0+_8b/TXO1+_10b/BR2P  
AGRN2/GPIO/AGRN6/TXO1-_8b/TXO2-_10b/BR3N  
AGRN3/GPIO/AGRN7/TXO1+_8b/TXO2+_10b/BR3P  
AGRN4/GPIO/ABLU2/TXO2-_8b/TXOC-_10b/BG1N  
AGRN5/GPIO/ABLU3/TXO2+_8b/TXOC+_10b/BG1P  
AGRN6/GPIO/ABLU4/TXOC-_8b/TXO3-_10b/BG2N  
AGRN7/GPIO/ABLU5/TXOC+_8b/TXO3+_10b/BG2P  
ABLU0/ GPIO/ABLU6/TXO3-_8b/TXO4-_10b/BG3N  
ABLU1/ GPIO/ABLU7/TXO3+_8b/TXO4+_10b/BG3P  
VCCK  
RTD_V  
RTD_H  
AHS0  
ADC_VDD  
B0-  
B0+  
G0-  
G0+  
SOG0  
R0-  
RTD_B-  
RTD_B+  
RTD_G-  
RTD_G+  
SOG  
RTD_R-  
RTD_R+  
R0+  
GPI/B1- / V8_7  
GPI/B1+ / V8_6  
GPI/G1- / V8_5  
GPI/G1+ / V8_4  
GPI/SOG1 / V8_3  
GPI/R1-/V8_2  
GPI/R1+/V8_1  
ADC_GND  
TCON[6][12]/GPIO/PWM3/BCLKN  
ABLU2/SPDIF3/SD3/TCON[10][8]/GPIO/PWM1/PWM5/BCLKP  
ABLU3/SPDIF2/SD2/TCON[ 9][11]/GPIO/IICSDA/BB1N  
ABLU4/SPDIF1/SD1/TCON[ 7][3]/GPIO/IICSCL/BB1P  
ABLU5/SD0/SPDIF0/TCON[13][3]/GPIO/BB2N  
ABLU6/MCK/TCON[5][9]/GPIO/BB2P  
ABLU7/SCK/TCON[4][2]/GPIO/BB3N  
WS/TCON[7][1]/GPIO/PWM1/BB3P  
R373  
4K7_5%  
R0402  
R361  
4K7_5%  
R0402  
R409  
4K7_5%  
R0402  
Download from Www.Somanuals.com. All Manuals Search And Download.  
R481  
10K_5%  
R0402  
R369  
NC/4K7_5%  
R0402  
R371  
NC/4K7_5%  
R0402  
Download from Www.Somanuals.com. All Manuals Search And Download.  
1
25  
G
7
8
9
10  
11  
12  
GPIO0  
SHLD  
S0  
S1  
S2  
ATTN  
SCL  
SDA  
24  
23  
22  
21  
20  
19  
ATTN  
SCL  
SDA  
DNC  
GND  
VDD  
S3  
Download from Www.Somanuals.com. All Manuals Search And Download.  
Download from Www.Somanuals.com. All Manuals Search And Download.  
Download from Www.Somanuals.com. All Manuals Search And Download.  
Download from Www.Somanuals.com. All Manuals Search And Download.  
Download from Www.Somanuals.com. All Manuals Search And Download.  

3Com Network Router WL 542 User Manual
Accusplit Heart Rate Monitor 602M100 User Manual
Actiontec electronic Network Router GEU404000 01 User Manual
Athena Technologies Speaker C5 User Manual
Audiovox Remote Starter APA 800a User Manual
Audiovox Stereo Receiver XMFM1 XM User Manual
Axis Communications Security Camera M3007 PV User Manual
Axis Communications Security Camera T95A User Manual
Baldor Portable Generator BALDOR GENERATOR User Manual
Behringer Music Mixer MON800 User Manual