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Acer Acer –LCD-A231H
Service Manual
LCD Monitor Acer A231H
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1
Table of Contents
Important Safety Notice .........................................................................................02
01 Product Specification ..........................................................................................03
02 Flat Panel Specification .......................................................................................15
03 Exploded Diagram ..............................................................................................36
04 Troubleshooting....................................................................................................37
05 Spare Parts List ...................................................................................................42
06 Schematics and Layouts.......................................................................................43
07 Assembly and Disassembly ................................................................................46
Appendix : User’s manual
Copyright
Copyright 2010 InnoLux Tech. Corp. Ltd
All Rights Reserved
This manual may not, in whole or in part, be copied, Photocopied, reproduced, translated, or converted to any
electronic or machine readable form without prior written permission of InnoLux Tech. Corp. Ltd.
Acer A231H Service Manual
1
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Acer Acer –LCD-A231H
Important Safety Notice
1. Safety precautions
This monitor is manufactured and tested on a ground principle that a user’s safety comes first.
However, improper used or installation may cause damage to the monitor as well as to the user.
Warning:
z This monitor should be operated only at the correct power sources indicated on the label on the
rear of the monitor. If you’re unsure of the power supply in you residence, consult your local dealer
or Power Company.
z Do not try to repair the monitor by yourself, as it contains no user-serviceable parts. This monitor
should only be repaired by a qualified technician.
z Do not remove the monitor cabinet. There are high-voltage parts inside that may cause electric
shock to human bodies.
z Stop using the monitor if the cabinet is damaged. Have it checked by a service technician.
z Put your monitor only in a lean, cool, dry environment. If it gets wet, unplug the power cable
immediately and consult your closed dealer.
z Always unplug the monitor before cleaning it. Clean the cabinet with a clean, dry cloth. Apply
non-ammonia based cleaner onto the cloth, not directly onto the class screen.
z Do not place heavy objects on the monitor or power cord.
2. Product safety notice
Many electrical and mechanical parts in this chassis have special safety visual inspections and the
protection afforded by them cannot necessarily be obtained by using replacement components rated
for higher voltage, wattage, etc. Before replacing any of these components read the parts list in this
manual carefully. The use of substitute replacement parts, which do not have the same safety
characteristics as specified in the parts list, may create shock, fire, or other hazards.
3. Service notes
z When replacing parts or circuit boards, clamp the lead wires around terminals before soldering.
z Keep wires away from high voltage, high temperature components and sharp edges.
z Keep wires in their original position so as to reduce interference.
z Adjustment of this product please refers to the user’ manual.
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Acer Acer –LCD-A231H
A
01 Product Specification
1.
General:
Acer A231H is designed with LVDS interface and VGA/DVI-D/HDMI(option) input, it featured with
embedded universal AC power supplies and audio input. It’s a green product and meets all ROHS
standard. The power button and display control buttons are on the front of the monitor. The monitors
shall automatically to display lower resolution video modes into 1920x1080 full screen display. The
image can be adjusted through OSD control. It support HDCP and color management function.
1.1 Main Features
Features Specifications
Maximum resolution
Back light system
Pixel pitch
1920 x 1080 @ 60Hz
4 CCFL
265.2 um (H) x 265.2 um (V)
Display area 509.76mm (H) x 286.74mm (V)
Contrast ratio
Brightness
Response time (Tr+Tf) 5ms (typ.)
Viewing angle
Input interface
udio system 1.5 W *2
Power management Compatible with VESA, DPMS
Plug & Play
University AC power supply YES
For Non-EMEA
OSD language
For EMEA
1000׃1 (TYP.) /80000:1(ACM ON)
250cd/m² (TYP.)
160° (H)/ 160°(V), (TYP.)
Analog (D-sub 15 pin)
Digital Option (DVI-D 24 pin & HDMI 19Pin)
VESA DDC/CI
English, Deutsch, Español, 简体中文, 繁體中文, Français,
Italiano, 日本語
English, Deutsch, Español, Dutch, Russian, Français,
Italiano, Finnish
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Acer Acer –LCD-A231H
1.2 Accessories
Items
Description
Option
VGA
cable
1.8m 1.8m 1.8m Multi Multi Multi
● ● ● ● ● ●
DVI
cable
Audio
cable
User’s
manual
Warranty card
Quick-start
Guide
2.
Operation Specifications
The unit should suffer no visible cosmetic damage and should operate with no degradation in display quality
during exposure to the operating conditions and after exposure to the non-operating conditions, in any
sequence.
2.1 Environmental conditions
Operating Specification
Low Temperature
0°C (Relative Humidity is as low as possible), 12 hrs.
High Temperature +40°C / 20% R.H., 12 hrs.
High Humidity +32°C/ 80% R.H., 12 hrs
Altitude 12,000 feet at 25°C (hold 3.5 hrs)
Storage
Low Temperature
-30°C / humidity not controlled
High temperature &low humidity +65°C/ 10% R.H.
Test Profile
+25°C/ 50%R.H.(2hrs)-> -30°C/ No R.H.(12hrs).-> +41°C/ 90%
R.H.(12hrs)->+65°C/ 10% R.H.(12 Hrs)->+25°C/ 50% R.H.(2hr)
Max. Wet Bulb Temp 39°C
Altitude 40,000 feet at -30 °C (hold 1 hr)
Notice:1.Altitude Ramp rate: <= 3,500 feet per minute
2. Packed properly with PE bag, cushion material, carton & seal tape
3. power off when test storage
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2.2 Safety, EMC, Ergonomics and Compatibility Requirements
EMC
Safety
EMC&Safety
Ergonomics
Compatibility
Power Management
Windows 95/98/Me/2000/XP/VISTA/7
Energy Star 5.0
2.3 Electrostatic Discharge Requirements
Item Condition Spec
Electrostatic
IEC61000-4-2(EN55024)
Discharge
2.4 Reliability
Items Condition Spec Note
Operating condition
MTBF
is 25°C
Contact discharge: 4KV
Contact discharge: 8KV ●
Air discharge : 8KV
Air discharge : 15KV ●
≧ 50,000 Hours
Luminance
CCFL Life time
≧ 50,000 Hours(Typ)
becomes 50%
Note1. Display an all WHITE field at mid Brightness and Contrast settings.
Note1
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3.
Electrical and Optical Characteristics and Performance
3.1 Main Power Supply
3.1.1 Input characteristics
Items Condition Spec Note
AC Input Voltage range Universal input full range 90~264Vac
AC Input Voltage rating Universal input full range 100~240Vac
AC input frequency range 90~264Vac 47~63Hz
AC input frequency rating 100~240Vac 50~60Hz
100Vac 1.5A(max) AC Input Current
240Vac 0.8A(max)
Inrush Current
AC-DC power Efficiency
100Vac,cold star,25°C 35A (max)
240Vac,cold star,25°C 70A(max)
DC output full loading ≥80%
Note2. Before each test, the buck capacitor need to be discharged.
Before each test, it must be 10 minutes at least after the latest test.
Hot star not component be damaged.
3.1.2 Output characteristics
Items Condition Spec Note
Ripple and Noise
DC Output Voltage
DC output loading
capability
Rise Time
Dynamic load change
Hold-up time
Overshoot
Turn on delay time
+25V output <800mv
+5V output <500mv
Audio 5V output <500mv
+25V output <480mv
+5V output <100mv
Audio 5V output <100mv
25V loading:0.3A~1.4A
5V loading:0.75A~1.5A
Audio 5V: 0A~1.2A
25v loading:0.1A~1.5A
5V loading: 0A
Vcc5V/1.8A,
<20mS
AC input: 100V~240V >10mS
<10%
2S
Vcc25V:23.2V~28V
Vcc5V: 4.75V~5.25V
Audio 5V: 4.95V~5.45V
Vcc25V: 23.8V~30V
Vcc5V: 4.75V~5.25V
Vcc25V/1.4A
Audio 5V: 1.5A
See Note2
With system See note 3
With dummy Load
For system active
For power saving or DC
off
Power management See Table-1
Note3: Paralleled a 0.1uF ceramic Cap. And 47uF aluminum Cap. Between the end of DC loading side,
Measured band-width=20MHz.
3.1.3 Protection characteristics
Ripple voltage of +25V is less than 1500mv when enter into burst mode.
Protection Condition Spec
OPP nominal AC input 60W ( min )
SCP(short circuit protection) with auto-recovery function
OVP(Over voltage protection) Auto recovery <output capacitor voltage
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OTP(Over temperature protection)
Fuse protection
Table-1
Status H-sync V-sync Video Power LED
Power On on on active ≤55W Blue
off on blanked < 1W Amber
Power Saving
Power Off -- -- -- < 1W Off
3.2 Backlight Power Supply
Panel: LTM230HT02
Items Specification
Lamp 4 CCFL
Input Voltage 23.8---28V
Input current
on off blanked < 1W Amber
off off blanked < 1W Amber
1.2A (Typ.), 1.4A (Max.)
On/Off switch level
Brightness PWM Duty (ACM Off)
Brightness PWM Duty (ACM On)
CCFL operating Voltage 875Vrms (Typ.),
CCFL Current
CCFL startup voltage ≧1840 Vrms (0˚C)
CCFL startup voltage 1≧ 510 Vrms (25˚C)
Operating frequency 40~60 KHz
Protect delay time
3.6V V≧ on 2.0 V (on)≧
-0.3v ≤ V off ≤ 0.8 V (off)
35%~100%
3%~100%
7.5mA (Typ.)
8.0mA (Max.)
> 1 second
Efficiency ≥75%
Note: Other panels please refer to the reference panel specs.
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3.3 Brightness output
The test to verify specifications in this section shall be performed under the following standard conditions
unless otherwise noted.
Temperature : 25 ± 5°C
Test pattern : white
Video Resolution : 1920 x 1080
Video input level : 700 mV ± 2%
Warm-up time : 30 minutes
Set brightness control and also contrast control at maximum, to measure the screen center, the light
output shall BL ≥ 200 cd/m2 .
3.4 White balance
The test standard conditions refer to Sec 3.3. (Brightness and contrast are under default value)
Mode
Cool
Warm
User
9300K 0.283 ± 0.030 0.297 ± 0.030
6500K 0.313 ± 0.030 0.329 ± 0.030
Panel While x Panel While y
Chromaticity Coordinate
x y
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3.5 Brightness uniformity
The test standard conditions refer to Sec 3.3.
)(backlight points nine of luminance Min.
%≥75
)(backlight points nine of luminance Max.
4.
Input / Output Signal Specifications
4.1 AC in
4.1.1 AC Input Voltage: 100~240VAC
4.1.2 AC Input Current: 1.2A @100Vac, 0.6A @240Vac
4.1.3 AC Frequency Range: 50~60Hz
4.2 Audio in (Option)
4.2.1 Input impedance ﹕ ≧ 10K ohm
4.2.2 Frequency response range ﹕200Hz ~ 20kHz
4.3HDMI in(Option)
HDMI type A Connector Pin assignment:
19 18 17 16
19 18 17 16
15 14
15 14
13 12
13 12
11
11
10 9 8 7 6 5 4 3 2 1
10 9 8 7 6 5 4 3 2 1
Pin Symbol Pin Symbol
1 TMDS Data2+ 11 Cable detect
2 TMDS Data2 shield 12 TMDS Clock-
3 TMDS Data2- 13 CEC
4 TMDS Data1+ 14 N/C
5 TMDS Data1 shield 15 SCL
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6 TMDS Data1- 16 SDA
7 TMDS Data0+ 17 DDC/CEC Ground
8 TMDS Data0 shield 18 +5V Power
9 TMDS Data0- 19 Hot Plug Detect
10 TMDS Clock+
4.4 DVI-D in
DVI-D Connector Pin assignment:
Pin Symbol Pin Symbol
1 TMDS Data 2- 16 Hot Plug Detect
2 TMDS Data 2+ 17 TMDS Data 03 TMDS Data 2/4 shield 18 TMDS Data 0+
4 N/C 19 TMDS Data 0/5 shield
5 N/C 20 N/C
6 DDC Clock 21 N/C
7 DDC Data 22 Clock shield
8 Analog Vertical Sync 23 Clock +
9 TMDS Data 1- 24 Clock 10 TMDS Data 1+
11 TMDS Data 1/3 shield
12 N/C
13 N/C
14 +5V Power
15 Cable detect
4.5 VGA in
4.5.1 D-sub Connector Pin assignment:
Pin Symbol
1 Red Video
2 Green Video
3 Blue Video
4 N/C
5 Cable detect
6 Red Ground
7 Green Ground
8 Blue Ground
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9 PC +3.3/+5V
10 Sync. Ground
11 N/C
12 DDC SDA
13 H sync
14 V sync
15 DDC SCL
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4.5.2
4.6 Timing table
Signal SPEC:
Items Condition Specification
Analog RGB signal Input impedance =75 Ohm 0.7Vp-p
Sync Input impedance ≧1k Ohm TTL level, Separate H/V-sync(+/-)
H-Sync Frequency 31K~83KHz
V-Sync Frequency 56~76Hz
Mode
MAC 640x480@66.66Hz 864x525 35 66.66 30.24 23H
VESA 720x400@70Hz 900x449 31.469 70.087 28.322 23H
SVGA
1024x600@60Hz 1312x622 37.320 60.000 48.964 N/A
XGA
VESA
SXGA 1280x1024@60Hz 1688x1066 63.981 60.020 108.000 25H
VESA
WXGA
WXGA+ 1440x900@60Hz 1904x931 55.935 59.887 106.500 2AH~2BH
WSXGA+ 1680x1050@60Hz 2240*1089 65.290 59.954 146.250 N/A
UXGA
Resolution
(active dot)
640x480@60Hz 800 x 525 31.469 59.941 25.175 23H
640x480@72Hz 832 x 520 37.861 72.809 31.500 N/A
800x600@56Hz 1024 x 625 35.156 56.250 36.000 23H
800x600@60Hz 1056 x 628 37.879 60.317 40.000 23H
800x600@72Hz 1040 x 666 48.077 72.188 50.000 N/A
1024x768@60Hz 1344x806 48.363 60.004 65.000 24H
1024x768@70Hz 1328x806 56.476 70.069 75.000 24H
1152x864@75Hz 1600x900 67.5 75 108 26H~27H
1280x960@60Hz 1800x1000 60 60 108 N/A
1280x720@60Hz 1650x750 44.955 59.940 74.176
1280x800@60Hz 1680x831 49.702 59.810 83.500
1360x768@60Hz 1792x795 47.712 60.015 85.500
1600x1200@60Hz 2160x1250 75.000 60.000 162.000 N/A
1920x1080@60Hz 2576x1120 67.158 59.963 173.000 2C~2D
1920x1080@60Hz 2200x1125 67.500 60.000 148.500 36H~46H
1920x1080@60Hz 2080x1111 66.587 59.934 138.500
Resolution
(total dot)
Horizontal
Frequency (KHz)
Vertical
Frequency (Hz)
Nominal Pixel
Clock (MHz)
Write in EDID
N/A
28H~29H
N/A
Note: 1. Non-interlace signals only (An interlace signal cannot be display)
2. Please refer to F/W specification for more detail
3. Each frequency of Power Macintosh and Sun Ultra is a reference value
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4.7 HDMI timing table(For HDMI Module)
For DVD Player Input, Attached timing is supported :
Mode Resolution Pixel Clock MHz H sync KHz V sync Hz
VGA 640 x 480p 25.2 31.5 60
NTSC (480i) 4:3 720 x 480 13.50 15.73 60
NTSC (480i) 16:9 720 x 480 13.50 15.73 60
NTSC (480p) 4:3 720 x 480 27.00 31.47 60
NTSC (480p) 16:9 720 x 480 27.00 31.47 60
PAL (576i) 720 x 576 13.50 15.63 50
PAL (576p) 4:3 720 x 576 27.00 31.27 50
PAL (576p) 16:9 720 x 576 27.00 31.27 50
720p 1280 x 720 74.25 37.5 50
720p 1280 x 720 74.25 44.96 60
1080i 1920 x 1080 74.25 28.125 50
1080i 1920 x 1080 74.25 33.72 60
1080P 1920 x 1080 148.50 56.250 50
1080P 1920 x 1080 148.50 67.50 60
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4.8 Audio output SPEC(For Audio Module)
Items
Min TYP MAX
Output power (W) 1.2 1.5 1.8
Output impedance (Ω) 3.4 4 4.6 AT 1KHz 1Vrms
Total harmonic distortion plus noise --- --- 10%
Signal to noise ratio (dB) 40 --- ---
PWM frequency (KHz)
200 250 300
Specification
TEST CONDITIONS
THD+N = 10%﹐AT 1KHz 1Vrms
Po≦ 2.0W
THD+N≦ 5%
Note: The low pass RC Filter (R=100Ω / C=0.047uF) for Class-D Output Power and THD+N Measurement
4.9 DDC data
EDID File Format : VESA’s EDID Standard Version #3, Revision #0,
EDID Structure : Version #1, Revision #3.
EDID Data Table : See the attached table (for example)
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4.9.1
VGA EDID table
0 1 2 3 4 5 6 7 8 9 A B C D E F
00 FF FF FF FF FF FF 00 04 72 C9 00 45 23 01 01
0
0A 14 01 03 08 33 1D 78 EA 60 85 A6 56 4A 9C 25
1
12 50 54 B3 0C 10 71 4F 81 00 81 80 95 00 D1 C0
2
01 01 01 01 01 01 02 3A 80 18 71 38 2D 40 58 2C
3
45 00 FD 1E 11 00 00 1A 00 00 00 FC 00 50 32 33
4
36 48 0A 20 20 20 20 20 20 20 00 00 00 FD 00 38
5
4C 1F 53 12 00 0A 20 20 20 20 20 20 00 00 00 FF
6
00 30 30 30 30 30 30 30 30 30 30 30 30 0A 00 78
7
4.9.2
DVI EDID table
0 1 2 3 4 5 6 7 8 9 A B C D E F
00 FF FF FF FF FF FF 00 04 72 C9 00 45 23 01 01
0
0A 14 01 03 80 33 1D 78 EA 60 85 A6 56 4A 9C 25
1
12 50 54 B3 0C 10 71 4F 81 00 81 80 95 00 D1 C0
2
01 01 01 01 01 01 02 3A 80 18 71 38 2D 40 58 2C
3
45 00 FD 1E 11 00 00 1A 00 00 00 FC 00 50 32 33
4
36 48 0A 20 20 20 20 20 20 20 00 00 00 FD 00 38
5
4C 1F 53 12 00 0A 20 20 20 20 20 20 00 00 00 FF
6
00 30 30 30 30 30 30 30 30 30 30 30 30 0A 00 00
7
4.9.3
HDMI EDID table(For HDMI Module)
0 1 2 3 4 5 6 7 8 9 A B C D E F
00 FF FF FF FF FF FF 00 04 72 C9 00 00 00 00 00
0
00 00 01 03 80 33 1D 78 EA 60 85 A6 56 4A 9C 25
1
12 50 54 B3 0C 10 71 4F 81 00 81 80 95 00 D1 C0
2
01 01 01 01 01 01 02 3A 80 18 71 38 2D 40 58 2C
3
45 00 FD 1E 11 00 00 1A 00 00 00 FC 00 48 32 33
4
33 48 0A 20 20 20 20 20 20 20 00 00 00 FD 00 38
5
4C 1F 53 12 00 0A 20 20 20 20 20 20 00 00 00 FF
6
00 30 30 30 30 30 30 30 30 30 30 30 30 0A 01 92
7
02 03 22 F2 23 09 7F 07 4E 01 02 03 84 05 06 07
0
10 11 12 15 93 1F 14 83 01 00 00 66 03 0C 00 10
1
00 00 8C 0A D0 8A 20 E0 2D 10 10 3E 96 00 13 2A
2
21 00 00 18 01 1D 00 72 51 D0 1E 20 6E 28 55 00
3
13 2A 21 00 00 1E 01 1D 80 18 71 1C 16 20 58 2C
4
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25 00 13 2A 21 00 00 9E 01 1D 00 BC 52 D0 1E 20
5
B8 28 55 40 13 2A 21 00 00 1E 01 1D 80 D0 72 1C
6
16 20 10 2C 25 80 13 2A 21 00 00 9E 00 00 00 FF
7
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5.
Function Specifications
All the tests to verify specifications in this section shall be performed under the following standard
conditions unless otherwise noted. The standard conditions are:
Temperature : 25 ± 5°C
Warm-up time : 30 minutes minimum
Checking display modes : All the specified modes
5.1 Panel general specifications
Item Describe
Supplier SEC
Model name LTM230HT02
Display Area(mm) 509.76× 286.74
Pixel Pitch(mm) 0.2655(H) ×0.2655(V)
Display Colors 16.7M colors (RGB 6-bit + Hi_FRC)
Number of Pixel 1920(H) × 1080(V),Full HD
Brightness 250 cd/m
Contrast Ratio 1000 (TYP.)
Viewing Angle
Display Mode Normally White
Response Time 5ms (TYP. ON/OFF)
Surface Treatment Anti-Glare, 3H
Lamp 4 CCFLs
Outline Dimension 534.0(W) ×311.7(H) ×12(D) (TYP.)
Notice: Other second panel pls refer to panel spec
160 (Horizontal) / 160(Vertical) (CR≧10)
2
(TYP.)
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5.2 Optical characteristic of LCD panel
The test methods for the below items’ definition, please refer to the specification of INL
Item Unit Conditions Min. Typ. Max. Remark
Viewing Angle
(
CR >= 10)
Contrast ratio
Response time
[degree] Horizontal
[degree] Vertical
Normal Direction 600 1000
[msec] Rising + Falling - 5 10
Color Chromaticity
(CIE)
Color Coordinates (CIE)
Green x 0.284
Green y 0.617
White
Luminance Uniformity
White Luminance at center
point
[%] 9 points
measurement
2
[cd/m
]
Right 70 80
Left 70 80
Up 70 80
Down 70 80
Red x 0.640
Red y 0.349
Blue x 0.142
Blue y 0.067
White x 0.313
White y
200 250 -
Typ-0.03
75% -
MT230DW01
0.329
panel.
-
-
-
-
Typ+0.03
5.3 Keypad Function
5.3.1
Control buttons
[AUTO]
[MENU]
[◄]
[►]
[e Color ]
A. When OSD un-displays, press [AUTO] and the function menu will show on the screen;
B. When function menu displays, press [AUTO] to perform auto-adjustment;
C. When OSD displays, press [AUTO] to return to previous level menu;
D. When “e Color OSD” OSD displays, press [AUTO] to exit the OSD.
A. When OSD isn’t shown on screen, press [MENU] to enter the function menu;
B. When function menu displays, press [AUTO] to enter the main menu OSD;
C. When OSD displays, press [MENU] to perform function of menu icon that is highlight or
enter next level menu
A. When OSD isn’t show on screen, press [◄] to enter the function menu;
B. When “MENU OSD” displays, press these keys to change the contents of an
adjustment item, or change an adjustment value;
C. When Function menu displays, press [◄] to show “Audio” OSD and decrease the
volume.
A. When OSD isn’t show on screen, press [►]to enter the function menu;
B. When “MENU OSD” displays, press these keys to change the contents of an
adjustment item, or change an adjustment value;
C. When Function menu displays:
a. Press [►] key one time to search (a port with signal in order)
b. Show “source icon” at the same time, as searching that port
c. Go into next port automatically, if search the port without signal
d. Display it, if search the port with signal
D. When the volume menu displays, press [►] to increase the volume.
A. When function menu displays, press [e Color] to show “e Color OSD”, and press
again the OSD can not disappear, but the time of “e Color OSD ”disappearing is reset
to 10 seconds again.
B. When OSD disappear not including “e Color OSD”, press [e Color] to show “e Color
OSD” OSD, the OSD before disappears, but the parameters of it should be saved
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[POWER] Power on or power off the monitor
5.3.2
Hot Key Operation
FUNCTION
FACTORY
MODE
HOT KEY OPERATION
e Color AUTO MENU ◄ ► POWER
● ON
DESCRIPTION
Press [e], and then press [POWER]
for DC power on. OSD menu will be
shown with “F” on the left top. Select
“F” for entering factory mode.
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5.4 OSD Structure
The On-Screen Display (OSD) shall be an easy to use icon based menu through keypad OSD
buttons or remote control unit. The unit shall leave the factory with all OSD controls set to their default
values.
First Second Third Fourth
empowering
technology
empowering
technology
--- --- ---
--- --- Standard
Function
Menu
Picture
e-color
Auto --- --- --- ---
Main menu Main menu (Pictiure) --- --- ---
Audio Audio menu --- --- ---
Input --- --- --- ---
Acer eColor Management
Brightness --- ---
Contrast --- ---
H.Position
Control
Range
0～100
0～100
0～100
Default Value
User mode
Text mode 44
Standard mode 77
Graphics mode
Movie mode
User mode
Text mode
Standard mode
Graphics mode
Movie mode
50
77
97
77
50
50
50
60
56
V.Position
Focus
Clock
Colour Temp
Auto Config --- --- --- ---
OSD OSD Timeout --- ---
Setting
Wide Mode
DDC/CI --- --- --- ON
ACM --- --- --- OFF
Source
--- ---
Warm --- --- Default
Cool --- --- ---
Red
User
Full --- --- Default
Aspect --- --- ---
Analog --- --- ---
Green
Blue
0～100
0～100
0～100
0～100
0～100
0～100
10～120
50
---
50 ○1
80
80
80
10
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Digital --- --- ---
HDMI --- --- ---
Info
EMEA NO-EMEA
English English --- ---
Russian
Deutsch Deutsch --- ---
Language
Reset --- --- --- ---
Resolution --- --- --- ---
H.Freq --- --- --- ---
V.Freq --- --- --- ---
Input Type --- --- --- ---
S/N --- --- --- ---
Français Français --- ---
Español Español --- ---
Italiano Italiano --- ---
Dutch
Finnish
繁體中文
简体中文
日本語
--- ---
--- ---
English
--- ---
--- ---
Notes:
1
Clock default 50 is for Visa timing. Others depend on timing.
○
Page 23
Acer Acer –LCD-A231H
5.5 OSD Translation
Main menu (NO_EMEA)
English
(英语)
Picture
Brightness
Contrast
H.Position
V.Position
Focus
Clock
Colour Temp
Warm
Cool
User
Red
Green
Blue
Auto Config
繁體中文
畫面
亮度
對比
水平位置
垂直位置
相位
時脈
色溫
暖色溫
冷色溫
使用者設定
紅色
綠色
藍色
自動調整
Deutsch
(德语)
Bild Image Imagen Immagine
Helligkeit Luminosité Brillo Luminosità
Kontrast Contraste Contraste Contrasto
H.Position H.Position H.Posicion O.Posizione
V.Position V.Position V.Posicion V.Posizione
Fokus Netteté Nitidez Nitidezza
Takt Fréquence Reloj Orologio
Farbtemp. Temp. Couleur Temp. Color Temp. Colore
Warm Chaud Càlido Caldo
Kalt Clair Frio Freddo
Anwender Utilisateur Usuario Utente
Rot Rouge Rojo Rossa
Grün Vert Verde Verde
Blau Bleu Azul Blu
Autom. Abgl. Autoréglage Autoajuste Autoregolazione
Français
(法语)
Español
(西班牙语)
Italiano
(意大利语)
画面 ピクチャー
亮度
对比度 コントラスト
水平位置 水平位置
垂直位置 垂直位置
相位 フェーズ
时序 クロック
色温
暖色温 暖色
冷色温 寒色
使用者设定 ユーザー設定
红色 赤
绿色 緑
蓝色 青
自动调整 自動調整
简体中文 日本語
輝度
色溫度
OSD OSD
OSD Timeout
Setting
Wide Mode
Full
Aspect Aspect
Input
Language
Reset
Please Wait
Information
Exit
Enter
Move
ON
OFF
Volume
OSD 顯示時間
設定
設定
寬螢幕模式
全螢幕
輸入
語言
恢復出廠模式
請稍待
資訊
結束調整
進入
移動
開
關
音量
OSD-Dauer Délai de l'OSD
Einstellung Réglages Configuración Impostazione
Vollbild Plein écran Completa Schermo intero
Vollbild Plein écran Completa Pieno
Eingang Entrée Entrada Input
Sprache Langue Idioma Lingua
Rücksetzen Restaurer Reiniciar Resetare
Bitte warten
Info Informations Información Informazioni
Beenden Quitter Salida Uscita
Eingabe Entrez Introducir Invio
Beweg. Dépla. Mover Muovi
EIN Allumé ACTIVADO ATTIVA
Aus OffEteinte Apagado Spento
Lautstärke Volume Volumen Volume
Veuillez
patienter
T. de espera
OSD
Espere, por
favor
Intervallo OSD
Attendere prego
OSD 显示时
间设定
设置 設定
宽屏模式 ワイドモード
全屏 全画面
输入 入力
语言
恢复出厂模
式
请稍待
信息
退出菜单 終了
进入 選択
移动 移動
开启 オン
关闭 オフ
音量 音量
OSD 表示時間
設定
言語
リセット
お待ちくださ
い
情報
Message menu: (NON_EMEA)
Page 24
Acer Acer –LCD-A231H
English
(英语)
Auto Config
Please Wait
Cable Not
Connected
Input Not
Supported
No Signal
繁體中文
自動調整
請稍待
無訊號線
連接
不支援
輸入訊號
無訊號
Color management OSD
English
(英语)
Standard
繁體中文
標準
Deutsch
(德语)
Autom. Abgl.
Bitte warten
Leitung nicht
angeschlossen
Frequenzen
nicht
unterstützt
Kein signal Pas de signal Sin señal Assenza segnale
(scenario OSD)
Deutsch
(德语)
Standard Standard Estándar Standard
Français
(法语)
Autoréglage
Veuillez
patienter
Câble non
connecté
Fréquences
non
supportées
Español
(西班牙语)
Autoajuste
Espere,
porfavor
Cable no
conectado
Frequencias
no
soportadas
language: (NON_EMEA)
Français
(法语)
Español
(西班牙语)
Italiano
(意大利语)
Autoregolazione
Attendere prego
Cavo non
connesso
Frequenza
non supportata
Italiano
(意大利语)
简体中文 日本語
自动调整
请稍待
信号线
无连接
输入
不支援
无讯号 信号なし
自動調整
お待ちくださ
い
ケーブルが接
続されて
いません
入力はサポー
トされて
いません
简体中文 日本語
标准 標準
Text
Graphics
Movie
User
Adjust/Exit
Select
Main menu (EMEA)
English
(英语)
Picture Изображ. Bild Image Imagen Immagine Beeld Kuva
Brightness Яркость Helligkeit Luminosité Brillo Luminosità Helderheid Kirkkaus
Contrast
H.Position
V.Position
Focus
Clock Частота Takt Fréquence Reloj Orologio Klok Taajuus
Colour Temp Цвет.темп. Farbtemperatur Temp. Couleur Temp. Color Temp. Colore Kleurtemp.
Warm Теплый Warm Chaud Càlido Caldo Warm Lämmin
Cool Холодный Kalt Clair Frio Freddo Koel Viileä
User Пользоват. Anwender Utilisateur Usuario Utente Gebruiker Käyttäjä
文字
圖形
電影
使用者
調整/結束
選擇
Russian
(俄语)
Контрастно
сть
Полож. по
гориз.
Полож. по
верт.
Фокусировк
а
Text Texte Texto Testo
Grafiken Images Gráficos Grafica
Spielfilm Film Película Film
Benutzer Utilisateur Usuario Utente
Abstimmen/Bee
nden
Auswahl Sélectionner Seleccionar Seleziona
Deutsch
(德语)
Kontrast Contraste Contraste Contrasto Contrast Kontrasti
H.Position H.Position H.Posicion O.Posizione H. positie Vaakasijainti
V.Position V.Position V.Posicion V.Posizione V. positie Pystysijainti
Fokus Netteté Nitidez Nitidezza
Ajuster/Quitter Ajuste/salir Regola/Esci
Français
(法语)
Español
(西班牙语)
Italiano
(意大利语)
文本 テキスト
图形
电影 ムービー
用户 ユーザー
调节/退出 調整/終了
选取 選択
Dutch
(荷兰语)
Scherpstell
ing
グラフィック
ス
Finnish
(芬兰语)
Tarkennus
Värin
lämpöisyys
Red Красный Rot Rouge Rojo Rossa Rood Punainen
Green Зеленый Grün Vert Verde Verde Groen Vihreä
Page 25
Acer Acer –LCD-A231H
Blue Синий Blau Bleu Azul Blu Blauw Sininen
Auto Config
OSD OSD
Автонастро
йка
Autom. Abgl. Autoréglage Autoajuste Autoregolazione
Autom.conf
iguratie
Autom.
asetukset
OSD Timeout
Setting Настр. Einstellung Réglages Configuración Impostazione Instelling Asetus
Wide Mode
Full Полное Vollbild Plein écran Completa Pieno Volledig Täysikuva
Aspect Aspect
Input Вход Eingang Entrée Entrada Input Ingang Tulo
Language Язык Sprache Langue Idioma Lingua Taal Kieli
Reset Сброс Rücksetzen Restaurer Reiniciar Resetare Opn.instellen Nollaus
Please Wait Подождите Bitte warten
Information
Exit Выход Beenden Quitter Salida Uscita Afsluiten Lopeta
Enter Ввод Eingabe Entrez Introducir Invio Enter Syötä
Move Переме Beweg. Dépla. Mover Muovi Verpl. Liiku
ON Вкл EIN Allumé ACTIVADO ATTIVA AAN
OFF Выкл Aus OffEteinte Apagado Spento Uit Pois päältä
Volume
Вр. отобр.
Меню
Широкоэк.р
еж.
Информаци
я
Громкость Lautstärke Volume Volumen Volume Volume
OSD-Dauer Délai de l'OSD
Bildformate Mode Large
Veuillez
patienter
Info Informations Información Informazioni Informatie Informaatio
T. de espera
OSD
Modo
panorámico
Espere, por
favor
Intervallo OSD
Modo Wide
Attendere prego
Time-out
OSD
Breedbeeld
modus
Een ogenblik
geduld
Aikakatkaisu
Laajakuva
Odota
PÄÄLLÄ
<ON>
Äänenvoim.
Message menu: (EMEA)
English
(英语)
Auto Config
Please Wait
Cable Not
Connected
Input Not
Supported
No Signal Нет сигнала Kein signal
Color management OSD
English
(英语)
Standard Стандарт Standard Standard Estándar Standard Standaard Vakio
Russian
(俄语)
Автонастро
йка,
подождите..
.
Кабель не
подключен
Вход не
поддержива
ется
Russian
(俄语)
Deutsch
(德语)
Autom. Abgl.
Bitte warten
Leitung nicht
angeschlossen
Frequenzen
nicht
unterstützt
(scenario OSD)
Deutsch
(德语)
Français
(法语)
Autoréglage
Veuillez
patienter
Câble non
connecté
Fréquences
non
supportées
Pas de
signal
Español
(西班牙语)
Autoajuste
Espere, por
favor
Cable no
conectado
Frequencias
no
soportadas
Sin señal
language: (EMEA)
Français
(法语)
Español
(西班牙语)
Italiano
(意大利语)
Autoregolazione
Attendere prego
Cavo non
connesso
Frequenza
non supportata
Assenza
segnale
Italiano
(意大利语)
Dutch
(荷兰语)
Bezig met
automatische
configuratie, een
ogenblik geduld
Kabel niet
aangesloten
Ingang niet
ondersteund
Geen signaal Ei signaalia
Dutch
(荷兰语)
Finnish
(芬兰语)
Autom.
asetukset.
Odota
Kaapeli ei
kiinni
Tuloa ei tueta
Finnish
(芬兰语)
Text Текст Tex t Tex te Tex to Te s t o Te k s t Tek st i
Page 26
Acer Acer –LCD-A231H
Graphics
Movie Кино Spielfilm Film Película Film Film Elokuva
User
Adjust/Exit
Select Выбор
Изображен
ие
Пользовате
ль
Настроить
/Выход
6. Mechanical
6.1 Dimension
Grafiken Images Gráficos Grafica Grafische Grafiikka
Benutzer Utilisateur Usuario Utente Gebruiker Käyttäjä
Abstimmen/Be
enden
Auswahl
Dimension Spec
Ajuster/Quitter Ajuste/salir Regola/Esci
Sélectionner Seleccionar Seleziona Selecteren Valitse
Aanpassen/v
erlaten
Säädä/Lopeta
Width
Height 409mm(W/Base),352mm(W/O Base)
Depth 172mm(W/Base),63mm(W/O Base)
Monitor Weight
Remark: If phase in other second panel, the Monitor weight =2.45Kg+second panel weight ±0.3Kg
553mm
5.5±0.3Kg for INL panel(INL panel 3.05Kg)
6.2 Cabinet Material
Cabinet Material Spec
Cabinet Plastic Material
Front Bezel
Back Cover
Base
Cabinet Texture ACER SPECIFICATION
ABS HB
BLACK
BLACK
BLACK
6.3 Mechanical Specification
Mechanical Spec
Bezel Gap Specification
Screen printed Parts Front bezel
≦1.3mm
6.4 Base Mechanical Interface
items Spec
Tilt
Wall Mount
Compliance with TCO03, -4°(+/-1°) ~+14°(+/-1°)
100mm x 100 mm
Page 27
Acer Acer –LCD-A231H
7. Package
7.1 Unit Package Specification
7.1.1 Units package
Items
Packaging Refer to ME PACKING SPEC
Ink COLOR
Length 620+/-2.0mm
Height 483+/-2.0mm
Width 146+/-2.0mm
Gross Weight 7.7±0.5kg for INL panel (INL panel weight 3.05Kg)
Units per Pallet 59sets/pallet
40’ /20’ Container Loading, Palletized 1180sets/590sets
Remark: If phase in other second panel, the Gross weight =4.65Kg+second panel weight ±0.3Kg
7.1.2 Unit Packing Vibration
Testing with vibration shall be done in each of three mutually perpendicular axes. Axes are referenced to the
position of system as it normally sits in front of user, i.e., Front-to-back, side-to-side and top-to-bottom.
7.1.2.1 Random Vibration
Spec
Items Description
Sweep Frequency 1~200Hz
Amplitude 1.14 Grms
Duration Time 30 minute each axis
Direction 3 mutually perpendicular axes (x, y, z)
RANDOM VIBRATION SPECTRUM BREAK POINTS
Frequency (Hz) PSD, G2/Hz
1 0.0001
4 0.01
100 0.01
200 0.001
Page 28
Acer Acer –LCD-A231H
7.1.3 Non operation Thermal Shock
Item Description
Temperature -200C to 600C
Reset cycles times
Total cycles 3 cycles
7.1.4
Package Drop
Drop height (Select drop height according to the gross weight refer to the table at below)
Test
25
ºC>60ºC (10hrs)>25ºC (2hrs)>-20ºC (10hrs)>25ºC
3cycles ,
every transition time 0.5 hr,
Gross Weight(kg)
Drop Height(cm)
1.0<W≦9.0
76
√
Drop sequence and orientation
Drop Drop onto Type Drop Figure
Step 1 Corner(2-3-5)of package Corner
Step 2 Edge(3-5) of package Edge
Step 3 Edge(2-3) of package Edge
Step 4 Edge(2-5) of package Edge
Step 5 Face(bottom-3)of package Flat
Step 6 Face(left-4) of package Flat
Step 7 Face(front-5) of package Flat
Step 8 Face(right-2) of package Flat
Step 9 Face(rear-6) of package Flat
Step 10
Face(Top-1) of package
Flat
Mechanical and electrical damage should not exist after vibration test, and shall be submitted for approval customer before
mass production.
8. Marking and Identification
8.1 S/N Label
The approval marking is required by the countries of sales destination.
8.2 Carton label
The approval marking is required by the countries of sales destination.
Page 29
Acer Acer –LCD-A231H
02. Flat Panel Specification
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Page 69
Acer Acer –LCD-A231H
03 Exploded Diagram
3.1. Screw List
Fixed
Item Part No. Description Qty
T(kg*cm)
Remark
509146306200R
1
509000000700R BOLT,#4-40x11.8,Ni ROHS 4
2
509212608120R SCREW,F,CROSS,T4*8,Zn,ROHS(5.8~6.2) 3
3
509116610500R
4
SCREW,P,CROSS,W/WAS,M3*6,Zn-Cc
SCREW,P,CROSS,M4*10,BLK-Zn(NYLO
K),ROHS
3.2. LCD Exploded drawing (All)
6
3
6.5±0.5
3.75±0.25
10±0.5
12±0.5
I/F Board to Chassis*1
Power Board to Chassis*4
D-SUB CON*2
DVI CON*2
Hinge to Stand
Hinge to back-cover
Page 70
Page 71
Page 72
Acer Acer –LCD-A231H
04 Troubleshooting
1．No Power & Power LED Off
No power
Check primary rectifier
voltage
Check pin6 of IC802
voltage about 16V
Check pin2 of IC802 voltage
about 3V
Check circuit if
short
Check F801, P801,
RT801,D801
CheckC810,D803,C807,
Check primary OVP, OLP and secondary
feedback, OVP circuit
Check IC802,
C804, T801,
END
Page 73
Acer Acer –LCD-A231H
g
2．DC output voltage is unstable
Unstable power
Check sampling
Circuit
Check
R822,R825,R826,
R822,R825,R826,
Check the R pin
volta
e of IC803
Check pin6 of
IC802 voltage
Check pin3 of
IC802 voltage
Check the C pin
voltage of IC803
Check R832
Check D803,C807,C810
Change
Check R805,R814,R815
Change
END
Page 74
Acer Acer –LCD-A231H
N
3．Backlight can’t be turned on
Is there high-level voltage on
pin6 of IC501?
o raster?
Yes
LED Green?
Yes
Backlight can’t be
turned on.
Yes
Is there 5Vdc voltage
on pin2 of IC501?
Yes
No
No
Check power
supply
Is Ok R505?
Yes
Check I/F board
Are connected rightly
CN501, CN502, CN503 and
CN504?
Is there instantaneously pulse
wave on pin1, pin16 of IC501
at the moment of restart?
Check feedback circuit
Is ok T501?
ISEN1,ISEN2,VSEN,OLP1,OLP2
Yes
Yes
Yes
Yes
No
No
No
No
Is Ok IC501?
No
R505 open
Connecting the
output connector
again
Yes
U501, U502 fail
IC501 fail
T501fail
END
Page 75
Acer Acer –LCD-P236H
4. Black screen
Page 76
Acer Acer –LCD-P236H
5. White Screen
Page 77
Acer Acer –LCD-P236H
6. Bad Screen
Page 78
Acer Acer –LCD-A231H
05 Spare parts List
PARTNAME
MAIN
BOARD
POWER
BOARD
KEYPAD
BOARD
LVDS
CABLE
ACER PART
NO.
55.LNW0J.001 795611300800R PCBA,IF/B(A09,EMEA,W/SPK),LE23ER-812 ROH
55.LNW0J.002 795611400800R PCBA,PI/B,W/SPK,LE23ER-812 ROHS
55.LNX0J.001 795691500800R PCBA,KEYPAD/B,LE23EY-812 ROHS
50.LK60J.002 430303003160R
OEM PART NO DESCRIPTION
HRN LVDS FFC 30P 220mm W/CORE＆TASTE
8231EY81A120R
CN
CABLE 50.LNW0J.001 430301001890R HRN ASS'Y 2x5P to 8P 320mm UL1571#28 Con
CABLE 27.LBN0J.001 453070801190R PWRCORD 16A/250V BLK 6FT VDE/KTL H05VV-F
CABLE 50.L63VF.003 453030300120R CABLE AUDIO 1P 6FT BLACK/GREEN CP03B06P0
CABLE 50.LBQ0J.001 453010100380R CABLE,D-SUB 15P MALE 6FT BLACK/BLUE, ROH
CABLE 50.LA10J.003 453030300370R CABLE,DVI-D 18+1P MALE 6FT BLACK , ROHS
STAND 60.LNX0J.001 71401E23EY00R ASSY STAND LE23EY
CHASSIS 60.LNW0J.004 70108E23ER03R ASSY,CHASSIS,W DVI SPK,SEC,LE23ER
FRONT
BEZEL
60.LNX0J.002 71403E23EY00R ASSY FRONT BEZEL LE23EY
Page 79
Acer Acer –LCD-A231H
COVER 60.LNX0J.003 71405E23EY00R ASSY BACK COVER SEC 1A1D LE23EY
BASE 60.LNX0J.004 71402E23EY00R ASSY BASE LE23EY
STAND UP 42.LNX0J.001 50126E23EY00R STAND UP LE23EY
SPEAKER 23.LK60J.001 618100103150R SPEAKER 1.5W 4Ω 100&120mm R/B/G W/CASE
PANEL LK.23006.014 631102230260HA LCP 23"LTM230HT01-A09(A)(SAMSUNG)HF
Page 80
Acer Acer –LCD-A231H
06 Schematics and Layouts
6.1 IF BD Layout
Page 81
Acer Acer –LCD-A231H
6.2 Power BD Layout
Page 82
Acer Acer –LCD-A231H
6.3 Keypad BD Layout
Page 83
Acer Acer –LCD-A231H
6.4 IF BOARD schematics and Power Supply circuit
Page 84
5
A
VCC5V
2
3
R164 NC/0
VCC5V
2
3
LED_A_CC
LED_A_A
R167
R110NC/100K
VCC5V
2
3
LED_G_CC
LED_G_G
R111NC/100K
GND
FB102
60
FB105
60
1
1
1
R170
100/NC
R0603
C150
22u/16V
C142
22u/16V
100/NCR0603
C167 1000p/50V
VDDP_33
+
C154 0.1/16V
C159 0.1/16V
C134 0.1/16V
C135 0.1/16V
GND
VDDC_18
GND
R162
1K/NC
R166
1K
R169
1K
C133 0.1/16V
C155 0.1/16V
C160 0.1/16V
C156 0.1/16V
+
R161
NC/0
R177
10K
R176
10K
C143
0.1/16V
LED_B_C
LED_A_C
LED_G_C
C144
0.1/16V
C145
0.1/16V
LED_A_CC
LED_G_CC
R186
NC/30K
C146
0.1/16V
R195
NC/30K
C136 0.1/16V
R185
C137 0.1/16V
C147
0.1/16V
R187
NC/10K
NC/10K
C138 0.1/16V
C139 0.1/16V
C174
NC/10u/10V
C176
NC/10u/10V
The Green section is added for Touchpad function key
C170 1000p/50V
C172 1000p/50V
C169 1000p/50V
C168 1000p/50V
EP103 5P35V
EP102 5P35V
EP101 5P35V
R194 0/NC
R193 0/NC
C171 1000p/50V
C173 1000p/50V
5
C149 0.1/16V
1
1
RIGHT/LEFT
C161 0.1/16V
LED_A_A
32
Q105
NC/PMBT3904
LED_G_G
32
Q109
NC/PMBT3904
MENU
AUTO
E-Color
LED_A
LED_G
POWER
C141 0.1/16V
AVDD_33
AVDD_18
2,3,4
WP_FW
KEY1
ADC_KEY1
ADC_KEY2
LED_B
LED_A
LED_G
KEY2
+3.3V
+1.8V
D D
Q106
PMBT3906/NC
R163
330/NC
R0603
LED_B
C C
Q107
PMBT3906
R178
0
R165
330
R0603
LED_A
Q108
PMBT3906
B B
R183
0
R168
220
R0603
LED_G
CN104
2x4P 2.0mm
1
2
3
4
5
6
7
8
9
10
CON--HR-200PHD2X05ST
To Keypad
Board
R189
10K/NC
R192
10K
VCC5V
DDC_SDA_VGA3
DDC_SCL_VGA3
DDC_SDA_DVI4
DDC_SCL_DVI4
R190
10K
VCC5V
C164 1u/16V
4
AVDD_33
VDDC_18
8
104
14
53
74
126
20
U105
VDDC
VDDC
VDDC
AVDD_33
AVDD_33
AVDD_33
TSUMU58NHJ-LF-1
GND
GND
GND
GND
GND
GND
172952
7288101
105
VDDC
GND
GND
GND
GND
106
686963
C152 0.047u/16V
390 1%
C148
1u/16V
SDO
2
SO
SCZ
1
SCK
6
SDI
R147 0
R148 0
C153 0.1/16V
28
27
25
24
26
23
22
32
33
34
35
9
10
12
13
15
16
18
19
5
6
7
31
30
41
42
43
44
108
128
127
102
37
R180 10K
RIN0P
RIN0M
GIN0P
GIN0M
SOGIN0
BIN0P
BIN0M
HSYNC0
VSYNC0
DDCA_SDA/RS232_TX
DDCA_SCL/RS232_RX
RX2P
RX2N
RX1P
RX1N
RX0P
RX0N
RXCKP
RXCKN
DDCD_SDA
DDCD_SCL
REXT
REFP
REFM
SDO
CSZ
SCK
SDI
RST
XIN
XOUT
BYPASS
MODE
GND
GND
1
11
GND
RED+3
RED-3
GREEN+3
GREEN-3
R159 470
SOG3
BLUE+3
BLUE-3
HSYNC3
VSYNC3
RX2+4
RX2-4
RX1+4
RX1-4
Rx0+4
RX0-4
RXC+4
RXC-4
AVDD_33
R144
+3.3V
C165
0.1/16V
GND
U108
8
VCC
7
CS#
HOLD#
3
WP#
SCK
4 5
R175 100K
GND SI
PM25LV010A-100SCE
C157 22p/50V
X101
14.31818MHz
C158 22p/50V
VDDP_33
R149 10K/NC
R191
1K
GND
CN104 Pin definition
CN104 Pins
1 (KEY1) SDA
2 (ADC_KEY1)
3 (ADC_KEY2)
4 (LED_B)
5 (LED_A)
7 (LED_G)
LED_BLUE
LED_YELLOW
8 (KEY2)
Maestro 242DXFHX2300(Dual)
Auto
MENU
POWER
LEFT
SCL
RESET
+5V
LED_ORANGE
GND6 (GND)
GND
LED_BLUE
RIGHT POWER
4
AVDD_18
114
21
54
58
VDDP
VDDP
VDDP
AVDD_18
GND
NC/GPO[0]NCNCNCNC
GND
GND
LVA4M/GPO[6]
LVA4P/GPO[7]
LVB4M/NC
LVB4P/NC
76
75
90
89
113565557616470
62
SCL_OSD
SDA_OSD
3
87
107
40
59
VDDP
VDDP
VDDP
I2C_MCL/GPIO_P10
I2C_MDA/GPIO_P11
NC/GPO[2]
NC/GPO[4]
R138
4K7
3
VDDP_33
112
606566
71
VDDP
VDDP
VDDP
VDDP
VDDP
GPIO_P17/SAR0
GPIO_P00/SAR1
GPIO_P01/SAR2
GPIO_P02/SAR3
GPIO_P06
GPIO_P07
GPIO_P14/PWM0
GPIO_P15/PWM0
GPIO_P16/PWM2
GPIO_P23/PWM1
GPIO_P41
GPIO_P24/PWM2
GPIO_P27/PWM1
GPIO_P03/PWM3
GPIO_P12/PWM3
GPIO_P26/PWM2
GPIO_P42
GPIO_P04
GPIO_P05
GPIO_P22
LVBCKM
LVBCKP
LVACKM
LVACKP
NC/GPIO_P25/PWM1
NC/GPIO_P43/PWM0
115
111
110
67
R137
4K7
WP_OSD
R142 100
R143 100
103
VDDP
LVB0M
LVB0P
LVB1M
LVB1P
LVB2M
LVB2P
LVB3M
LVB3P
LVA0M
LVA0P
LVA1M
LVA1P
LVA2M
LVA2P
LVA3M
LVA3P
116
VCTRL
117
2
+3.3V
R172 10K
R139 10K/NC
R184 10K
R152 4.7K
R174 10K
R150 4.7K
RXO0RXO0+
RXO1RXO1+
RXO2RXO2+
RXOCRXOC+
RXO3RXO3+
R151 4.7K
GND
VCC5V_DET
119
R154 100
120
R155 100
121
122
123
124
2
3
R125 1K
4
R160 1K
36
48
R153 100
50
51
73
109
125
39
38
R216 1K
49
47
46
45
RXO0-
100
RXO0+
99
RXO1-
98
RXO1+
97
RXO2-
96
RXO2+
95
RXOC-
94
RXOC+
93
RXO3-
92
RXO3+
91
RXE0-
86
RXE0+
85
RXE1-
84
RXE1+
83
RXE2-
82
RXE2+
81
RXEC-
80
RXEC+
79
RXE3-
78
RXE3+
77
NC
NCNCNC
118
VLCD
R171 10K
CN105
FFC-CON/NC
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
CON--PI-AL230C
R140 10K
FOR SINGLE LVDS INPUT
+3.3V
C140
0.1/16V
U106
VCC
WP
SCL
AT24C16AN
1
A0
2
A1
3
A2
45
GNDSDA
GND
8
7
6
VCC5V
C166 0.1/16V/NC
R220 10K
R181 10K/NC
R179 10K
R182 20K/NC
R221 0/NC
R157 100
R158 100
WP_FW
R188
4K7
SCL_OSD
SDA_OSD
GND
GND
WP_OSD
RL111 0/NC
RL112 0/NC
RL113 0/NC
RL114 0/NC
VLCD2
VLCD2
RXO0RXO0+
RXO1RXO1+
RXO2RXO2+
RXOCRXOC+
RXO3RXO3+
RXE0RXE0+
RXE1RXE1+
RXE2RXE2+
RXECRXEC+
RXE3RXE3+
R0603
RXO0RXO0+
RXO1RXO1+
RXO2RXO2+
RXOCRXOC+
RXO3RXO3+
RXE0RXE0+
RXE1RXE1+
RXE2RXE2+
RXECRXEC+
RXE3RXE3+
LPIN6
LPIN5
R146 1K
ADC_KEY1
ADC_KEY2
LED_B_C
LED_A_C
LED_G_C
VOLUME 2
MUTE 2
KEY2
VGA_DET 3
HPD_CTRL 4
KEY1
PANEL_ENABLE 2
CCFL_ENABLE 2
BRIGHTNESS 2
DVI_DET 4
WP_EDID 3,4
CN103
FFC-CON
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
LPIN6
6
LPIN5
5
4
3
2
1
CON--PI-AL230C
CN107
FFC-CON/NC
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
CON--HR-200PHD2X15ST
GND
InnoLux
Document Number : SIZE :
TITLE :
DATE :
SHEET OF
SCALER
2010-01-25
2
1
TSUMU58NHJ-LF-1
A2
Rev :
55
V01
1
APPRO BY :
CHECK BY :
DRAWN BY :
A
Page 85
5
4
3
2
1
C805
C805
2200p/400V
2200p/400V
D D
ZD803
C842
C842
ZD803
P6KE150A
P6KE150A
0.1/50V
0.1/50V
C825
C825
0.1/50V
0.1/50V
D803
D803
1N4003
1N4003
+
+
C807
C807
47u/25V
47u/25V
Q804
Q804
AP2763I
AP2763I
R814
R814
10K
10K
USB 5V
VCC5V
ON/OFF 3
BRIGHTNESS 3
VOLUME 6
MUTE 6
HDMI_AUDIO_L 6
HDMI_AUDIO_R 6
AUDIO_SW 6
PSC
R805
D801
D801
1
BL4-06
BL4-06
-+
-+
4
R802 1MR802 1M
1000p/400V
1000p/400V
N
34
17mH
17mH
21
C802
C802
2
3
MOV801
MOV801
10D471
R8011MR801
1M
RT801
RT801
NTC 5R
NTC 5R
F801
F801
3.15A/250V
3.15A/250V
C801
C801
1000p/400V
1000p/400V
P801
P801
AC_SKT
AC_SKT
10D471
L801
L801
C803
C803
0.47/275V
0.47/275V
1 2 345
L
C C
B B
A A
C804
C804
+
+
150u/450V
150u/450V
CN803
CN803
Gate
Isense
GND
FB
SD
VDD
NC
Vin
CON8PIN
CON8PIN
TO SCALER BD CN801
CN801
CN801
16P 2.0mm
16P 2.0mm
1
2
3
4
5
6
7
8
10
10
11
11
12
12
13
13
14
14
15
15
16
R805
68K 2W
68K 2W
1
1
2
2
3
3
NC
4
4
5
5
6
6
7
7
8
8
9
9
1
C806
C806
4700p/400V
4700p/400V
D802
D802
MUR1100ERL
MUR1100ERL
23
R815
R815
0R47 2W
0R47 2W
6
6
1
2
3
5
6
C808
C808
47P/1KV
47P/1KV
T801
T801
SPW-101
SPW-101
3
3
C828
C828
4700p/400V
4700p/400V
IC801
IC801
LTV817M
LTV817M
IC804 NC
IC804 NC
LTV817M
LTV817M
R827 0R827 0
14
13
D807 SRF10-06CT-LFD807 SRF10-06CT-LF
9
1
10
3
1
3
11
12
14
2
R833
R833
1K 1%
1K 1%
14
2
C815
C815
330p/500V
330p/500V
D804
D804
SF50-04F69-LF
SF50-04F69-LF
D805
D805
SF50-04F69-LF
SF50-04F69-LF
D806
D806
SF50-04F69-LF
SF50-04F69-LF
C816
C816
2200p/500V
2200p/500V
R81610R816
10
2
R836
R836
0R47 2W
0R47 2W
2
D808
D808
SRF10-06CT-LF
SRF10-06CT-LF
R82910R829
10
C836
C836
2200p/500V
2200p/500V
R820NCR820
NC
PSC 6
C819
C819
1000u/10V
1000u/10V
+
+
+
+
1000u/10V
1000u/10V
R832
R832
270
270
C
C
R
R
A
A
+
+
C823
C823
1000u/10V
1000u/10V
C837
C837
C827NCC827
NC
IC803
IC803
TLV431ALP
TLV431ALP
ZD801
ZD801
27V
+
+
+
C821
C821
0.1/100V
0.1/100V
+
C839
C839
C830
C830
270u/50V
270u/50V
270u/50V
270u/50V
L802
L802
5uH
5uH
C820
C820
470u/16V
470u/16V
C840
C840
+
+
470u/16V
470u/16V
R821
R821
1K 1%
1K 1%
R823NCR823
NC
InnoLux
InnoLux
InnoLux
Document Number : SIZE :
Document Number : SIZE :
Document Number : SIZE :
TITLE :
TITLE :
TITLE :
27V
C818
C818
0.1/50V
0.1/50V
+5V
+
+
C822
C822
0.1/50V
0.1/50V
R822
R822
4K7 1%
4K7 1%
C841
C841
0.1/50V
0.1/50V
AudioVCC5V 4
CN802
CN802
100mm 4PR
R824
R824
3K3 1%
3K3 1%
100mm 4PR
POWER SUPPLY
POWER SUPPLY
POWER SUPPLY
R828
R828
1K 1%
1K 1%
1
2
3
4
R826
R826
10K
10K
R825
R825
100K 1%
100K 1%
R831
R831
510 2W
510 2W
2
R818
R818
10K
10K
F802
F802
5A/125V
5A/125V
F803NCF803
NC
C826NCC826
NC
P236H
P236H
P236H
Custom
Custom
Custom
+24V 3,4
31
Q801
Q801
2N4401
2N4401
VCC5V
USB 5V
usb5v
6
APPRO BY :
APPRO BY :
APPRO BY :
CHECK BY :
CHECK BY :
CHECK BY :
2010-01-15
2010-01-15
DATE :
DATE :
DATE :
SHEET OF
SHEET OF
SHEET OF
5
4
3
2
2010-01-15
Rev :
Rev :
Rev :
V0162
V0162
V0162
DRAWN BY :
DRAWN BY :
DRAWN BY :
1
Page 86
5
4
3
2
1
R803NCR803
NC
HV
NC
RT
R807
R807
100K 1%
100K 1%
R849NCR849
NC
R850NCR850
NC
6
IC802
IC802
LD7575
LD7575
4
OUT
VCC
COMP
GND
1000p/50V
1000p/50V
CS
R851NCR851
NC
C811
C811
CN804
CN804
C810
C810
0.1/50V
0.1/50V
R804NCR804
NC
R81320R813
5
3
2
20
R809
R809
680R
680R
C809
C809
220p/50V
220p/50V
1
2
3
4
5
6
7
8
Gate
Isense
GND
FB
GND
VDD
NC
HV
CON8PIN
CON8PIN
D D
R808
R808
33K
33K
R806
R806
33K
33K
C C
8
7
1
C812NCC812
B B
NC
R844NCR844
NC
A A
5
C838NCC838
NC
P236H
P236H
InnoLux
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InnoLux
Document Number : SIZE :
Document Number : SIZE :
D812NCD812
NC
4
Document Number : SIZE :
TITLE :
TITLE :
TITLE :
POWER Control
POWER Control
POWER Control
2010-01-15
2010-01-15
DATE :
DATE :
DATE :
SHEET OF
SHEET OF
SHEET OF
3
2010-01-15
2
P236H
A
A
A
Rev :
Rev :
Rev :
APPRO BY :
APPRO BY :
APPRO BY :
CHECK BY :
CHECK BY :
CHECK BY :
DRAWN BY :
DRAWN BY :
DRAWN BY :
V0263
V0263
V0263
1
Page 87
5 4 3 2 1
A
C509
+24V
C527NCC527
NC
R501
R501
D501
D501
5.1k
5.1k
5.6V
C532
C532
1000P 0805
D
1000P 0805
0
C502
C502
1u 0805
1u 0805
R504
R504
270k
270k
R503
R503
180k
180k
R505
R505
100k
100k
1.0u 0805
1.0u 0805
VDDA
C526
C526
PWM
C503
C503
100p
100p
R502
R502
VCC5V
10R
10R
C
R521NCR521
NC
BRIGHTNESS2
VDDA
R506 100kR506 100k
B
VSEN
D503 BAV70D503 BAV70
C517
C517
8.2nF/50V
8.2nF/50V
VS3
VS4
C521NCC521
R513
R513
30k
30k
5.6V
C512
C512
47n
47n
1
2
3
4
5
6
7
C504
C504
1.0u 0805
1.0u 0805
C518
C518
8.2nF/50V
8.2nF/50V
IC501
IC501
DRV1
VDDA
SEL
RT1
RT
PWM
PID
TIMER8ISEN1
INL816
INL816
DRV2
GND
SSTCMP
OLP2
OLP1
VSEN
ISEN2
C522NCC522
NC
16
15
14
13
12
11
10
9
R531 0R531 0
R514
R514
30k
30k
R526
R526
10R
10R
U501
U501
AP9971GH
AP9971GH
R532 0R532 0
1
1
R510 100kR510 100k
R511 100kR511 100k
U502
U502
AP9575GH
AP9575GH
2 3
23
0
C505
C505
47n
47n
OP1
R508 100kR508 100k
OP2
R509 100kR509 100k
R529 2kR529 2k
IS1
IS2
R512 100kR512 100k
VSEN
0
0
NC
0
D504 BAV70D504 BAV70
C519
A
C519
8.2nF/50V
8.2nF/50V
VS1
VS2
C523 NCC523 NC
R515
R515
30k
30k
C520
C520
8.2nF/50V
8.2nF/50V
C524NCC524
NC
R516
R516
30k
30k
0
0
C509
2.2u
2.2u
C508
C508
2.2u
2.2u
C507
C507
2.2u
2.2u
DRIV
C506
C506
2.2u
2.2u
D502
D502
PWM
R507 10RR507 10R
R517 220RR517 220R
R523 NCR523 NC
IS1
R518 150RR518 150R
R519 220R519 220
R525 NCR525 NC
IS2
R520 150RR520 150R
InnoLux
InnoLux
InnoLux
Document Number : SIZE :
Document Number : SIZE :
Document Number : SIZE :
TITLE :
TITLE :
TITLE :
DATE :
DATE :
DATE :
SHEET OF
SHEET OF
SHEET OF
1
3
2
BAT54
BAT54
R522 470RR522 470R
OP1
R527 470RR527 470R
R524 470RR524 470R
OP2
R528 470RR528 470R
INVERTER SUPPLY
INVERTER SUPPLY
INVERTER SUPPLY
2010-01-15
2010-01-15
2010-01-15
BRIGHTNESS
C525
C525
0.1uF/50V
0.1uF/50V
P236H
P236H
P236H
VCC5V
Rev :
Rev :
Rev :
+24V
A4
A4
A4
DRIV
V0164
V0164
V0164
VS4
VS3
VS1
VS2
0
20
19
18
17
16
15
14
13
12
11
10
CN506
CN506
Briness
on/off
+5V
VS4
Is2
Op2
VS3
GND
VS1
Op1
Is1
9
Vs2
8
DRIV
7
DRIV
6
GND
5
GND
4
+25V
3
+25V
2
NC
1
NC
CON 20PIN
CON 20PIN
APPRO BY :
APPRO BY :
APPRO BY :
CHECK BY :
CHECK BY :
CHECK BY :
DRAWN BY :
DRAWN BY :
DRAWN BY :
Page 88
5 4 3 2 1
A
T501
T501
SPW-169
SPW-169
IS1
OP2
OP1
1
2
CN501
CN501
4100-D02
4100-D02
1
2
CN502
CN502
4100-D02
4100-D02
1
2
CN503
CN503
4100-D02
4100-D02
H
L
H
L
H
L
1
5
D
C528 NCC528 NC
CN505
CN505
1
NC
2
NC
3
+25V
4
+25V
5
GND
6
GND
7
DRIV
8
DRIV
Vs2
Is1
Op1
VS1
GND
VS3
C
Op2
Is2
VS4
+5V
on/off
Briness
CON 20PIN
CON 20PIN
VS2
9
IS1
10
OP1
11
VS1
12
13
VS3
14
OP2
15
IS2
16
VS4
17
18
19
20
ON/OFF
Briness
0
VCC5V
+25V
+
+
C501
C501
270u/50V
270u/50V
0
2
T502
T502
SPW-169
SPW-169
1
2
1
2
T503
T503
SPW-169
SPW-169
4
5
C529NCC529
NC
4
5
C530NCC530
NC
4
C513
C513
12p/3KV
12p/3KV
VS1
C514
C514
12p/3KV
12p/3KV
VS2
C515
C515
12p/3KV
12p/3KV
VS3
T504
T504
SPW-169
FB802FB802
0
B
0
A
SPW-169
1
2
5
C531NCC531
NC
4
C516
C516
12p/3KV
12p/3KV
VS4
Document Number : SIZE :
Document Number : SIZE :
Document Number : SIZE :
TITLE :
TITLE :
TITLE :
DATE :
DATE :
DATE :
SHEET OF
SHEET OF
SHEET OF
1
H
IS2
2
L
CN504
CN504
4100-D02
4100-D02
InnoLux
InnoLux
InnoLux
INVERTER SUPPLY
INVERTER SUPPLY
INVERTER SUPPLY
2010-01-15
2010-01-15
2010-01-15
P236H
P236H
P236H
Rev :
Rev :
Rev :
A4
A4
A4
APPRO BY :
APPRO BY :
APPRO BY :
CHECK BY :
CHECK BY :
CHECK BY :
DRAWN BY :
DRAWN BY :
DRAWN BY :
V0165
V0165
V0165
Page 89
5
A
C709
C709
C708
P701
P701
D D
PHONE_JACK
PHONE_JACK
R
R
L
L
RI
LI
2
3
4
5
1
R701 0/NCR701 0/NC
R702 0/NCR702 0/NC
C708
1000p/50V
1000p/50V
HDMI_AUDIO_R2
HDMI_AUDIO_L2
1000p/50V
1000p/50V
AR
AL
C703 0.1/50VC703 0.1/50V
C704 0.1/50VC704 0.1/50V
C705 0.1/50VC705 0.1/50V
C706 0.1/50VC706 0.1/50V
RI
LI
C C
R71210K R71210K
R71610K R71610K
4
R71310K R71310K
R71710K R71710K
Audio VCC5V
R71510K R71510K
R71410K R71410K
R71910K R71910K
R71810K R71810K
Audio VCC5V
+
+
C702 220u/25V
C702 220u/25V
1
4
8
11
13
5
14
C701 0.1/50VC701 0.1/50V
A IN/OUT
B IN/OUT
C IN/OUT
D IN/OUT
Control A
Control B
VDD
U702
U702
CD4066BE
CD4066BE
3
A OUT/IN
B OUT/IN
C OUT/IN
D OUT/IN
Control D
Control C
VSS
Audio VCC5V
R72010K R72010K
2
2
3
9
10
12
6
7
R72110K R72110K
AR
AL
CN704
LOUT+
LOUTROUTROUT+
CN704
4
3
2
1
4P 2.0mm 90°
4P 2.0mm 90°
1
R722 1KR722 1K
Audio VCC5V
+
+
C707
C707
220u/25V
220u/25V
15
LOUT-
13
LOUT+
11
AR
9
AL
7
SHUT
5
VOL
3
AGND
1
+5V
CN702
CN702
2*8P 2.54mm 90°
2*8P 2.54mm 90°
TO Daughter BD
10K
B B
R711
VOLUME2
R711
100
100
10K
R709
R709
31
Q701
Q701
2
2N4401
2N4401
LOUT-
LOUT+
AR
AL
MUTE2
Audio VCC5V2
ROUT-
ROUT+
EO_R
EO_L
Hp/Sp
GND
16
14
12
AR
10
AL
8
6
4
2
Q702
Q702
2N4401
2N4401
ROUT-
ROUT+
AR
AL
31
R723 1KR723 1K
2
AUDIO_SW 2
InnoLux
InnoLux
InnoLux
Document Number : SIZE :
Document Number : SIZE :
Document Number : SIZE :
TITLE :
TITLE :
TITLE :
Audio Switch
Audio Switch
Audio Switch
P236H
P236H
P236H
Custom
Custom
Custom
APPRO BY :
APPRO BY :
APPRO BY :
CHECK BY :
CHECK BY :
CHECK BY :
A
2010-01-15
2010-01-15
DATE :
DATE :
DATE :
SHEET OF
SHEET OF
SHEET OF
5
4
3
2
2010-01-15
Rev :
Rev :
Rev :
DRAWN BY :
DRAWN BY :
DRAWN BY :
V0266
V0266
V0266
1
Page 90
Acer Acer –LCD-A231H
07 Assembly and disassembly
S1 Release the base from stand.
S2 Release the stand cover.
S3 Screw out the 3 screws in stand.
Page 91
Acer Acer –LCD-A231H
S4 Take off the stand.
S5 Release the front bezel at 3 sides
S6 Turn over the monitor, release the back-cover.
Page 92
Acer Acer –LCD-A231H
S7 Release the keypad cable and release the keypad board.
S8 Pull out lamp cables and LVDS cable.
S9 Release the chassis.
Page 93
Acer Acer –LCD-A231H
S10 Screw out the 4 bolt screws
S11 Release the 6 screws from interface board and power board.
S12 Release the speaker cable.
Page 94
Acer Acer –LCD-A231H
S13 Take out interface board and power board.
S14 Take out LCD panel.
Page 95
Acer Acer –LCD-A231H
08 FW & EDID upgrade procedure
1. SOP of PCBA ISP Programming (FW TOOL: INL PN 799999942100R/Acer
PN 6K.L46VF.001)
1.1 Operational condition:
Equipment: PC, ISP card, signal cable and power cable.
ESD requirements: antistatic wrists, antistatic gloves(fingers), and connecting cable
Name of ISP program: ISP_Tool_V4.4.2.4
Manufacture of FW IC：PMC/SST/MX
1.2 Operational steps:
1. Connection: connect PC to PCBA with signal cable, and then keep AC and DC in open state.
Signal cable
One port of ISP
program card is
connected to PC
2. Adjust ISP programming
Firstly, double click ISP_Tool_ V4.4.2.4 exit and click “Connect ” button; The ISP tool will connect to
monitor automatically, and it will show flash IC type automatically
FW IC
Model
Page 96
Acer Acer –LCD-A231H
Secondly﹐download FW software: first select “READ”, and then load FW software in Rooter
(Fig.2).
Software
Checksum value
FW BIN file
Thirdly, select “AUTO”, and keep its default value. Click “RUN” for beginning programming. There will
be prompting if programming is OK.
Note: if programming fails or success rate is not high, click “Config” an◆ d adjust its speed to lower
Page 97
Acer Acer –LCD-A231H
in “I2C Speed Setting”and check Communication Setting. If connect port is print port, please check
port type.
Page 98
Acer Acer –LCD-A231H
3. Flow Chart
2. SOP of EDID (EDID TOOL: INL PN 799999942000R/ Acer PN 6K.LBQ0J.001)
2.1 Request of hardware and software:
1. Software
a.port95nt.exe
Page 99
Acer Acer –LCD-A231H
b.Edid.exe
c.A231H model
2. Hardware
a. PC（winXP or win2000）1PCS；
b. Tool（EDID Card、VGA cable & DVI cable)
2.2 Operational steps:
1. First set up Port95nt.exe
Page 100
Acer Acer –LCD-A231H
2. Click next button continually then can finish setting.
A : USB interface provide +5V DC power（No Power is ok ）
B : Connect DDC Card and PC with collateral interface ；
C :VGA、DVI use different cable to link DDC and PC
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