Acer LCD-S243HL User manual

Acer Acer –LCD-S243HL
Service Manual
LCD MonitorAcer S243HL

1
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 2009 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 S243HL Service Manual

Acer Acer –LCD-S243HL
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:
zThis 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.
zDo 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.
zDo not remove the monitor cabinet. There are high-voltage parts inside that may cause electric
shock to human bodies.
zStop using the monitor if the cabinet is damaged. Have it checked by a service technician.
zPut your monitor only in a lean, cool, dry environment. If it gets wet, unplug the power cable
immediately and consult your closed dealer.
zAlways 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.
zDo 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
zWhen replacing parts or circuit boards, clamp the lead wires around terminals before soldering.
zKeep wires away from high voltage, high temperature components and sharp edges.
zKeep wires in their original position so as to reduce interference.
zAdjustment of this product please refers to the user’ manual.

Acer Acer –LCD-S243HL
01 Product Specification
1. General:
Acer S243HL is designed with LVDS interface, VGA/Dual-HDMI input, LED panel and over driver
function. it featured with DC 19V adapter 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 base of the monitor.
The monitor shall automatically to display lower resolution video modes into 1920x1080 full screen
display. The image can be adjusted through OSD control. It support HDCP, Color management and
ACM function.
1.1 Main Features
Features Specifications
Maximum resolution 1920(x3) x 1080 @ 60Hz
Back light system 2 LED lightbar (top & bottom edge side)
Pixel pitch 276.75 um (per one triad) x 276.75 um (V)
Display area 531.36mm (H) x 298.89mm (V)
Contrast ratio 8,000,000:1(ACM ON)
Brightness 250cd/m² (TYP.)
Response time (Tr+Tf) 2ms(GTG)
Viewing angle 170° (H)/ 160°(V), (TYP.)
Input interface Analog (D-sub 15 pin)
Di
g
ital
(
HDMIx2
)
Audio system 2 W *1
Plug & Play VESA DDC/CI
Power supply DC 19V adapter
For Non-EMEA English, Deutsch, Español, 简体中文, 繁體中文, Français,
Italiano, 日本語
OSD language
For EMEA English, Deutsch, Español, Dutch, Russian, Français,
Italiano, Finnish

Acer Acer –LCD-S243HL
1.2 Accessories
Items VGA
cable
Audio
cable
User’s
manual Warranty card Quick-start Guide
Description 1.8m 1.8m Multi Multi Multi
Option ●●●●●
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

Acer Acer –LCD-S243HL
2.2 Safety, EMC, Ergonomics and Compatibility Requirements
Items Description
GS CB TUV/GS CCC BSMI SASO
Safety ●●●●●●
FCC-B CE/EMC VCCI C C-Tick CCC BSMI SASO
EMC ●●●●●●●
Ergo TCO’03 cTUVus China energy
Ergonomics ●●●●
Windows 95/98/Me Windows 2000 Windows XP Windows
Vista
Compatibility
●●●●
Energy Star 5.0Power
Mana
g
ement ●
2.3 Electrostatic Discharge Requirements
2.4 Reliability
Items Condition Spec Note
MTBF Operating
condition is 25°C ≧60,000 Hours Except panel
LED Life time Luminance
becomes 50% 15,000 Hours(TYP) Note1
Note1. Operating with fixed driving current
Item Condition Spec
Contact discharge: 4KV
Contact discharge: 8KV ●
Air discharge : 8KV
Electrostatic
Discharge IEC61000-4-2(EN55024)
Air discharge : 15KV ●

Acer Acer –LCD-S243HL
3. Electrical and Optical Characteristics and Performance
3.1 Main Power Supply
3.1.1 Adapter 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 1.2A
AC Input Current 240Vac 0.6A
100Vac,cold star,25°C 35A (max)
Inrush Current 240Vac,cold star,25°C 70A(max) See Note1
DC output voltage +19V output 18.05V~ 19.95V
DC output loading capability 2.1A (max)
Output Ripple and Noise With dummy load 350mV
Rise Time <40mS
With system >10mS
Hold-up time With dummy load >6mS
Overshoot <10%
Turn on delay time 2S
Efficiency ≥80%
Power management See Table-1
Note1. Before each test, the buck capacitor needs to be discharged.
Before each test, it must be 10 minutes at least after the latest test.
Hotstarnotcomponentbedamaged.
3.1.2 Protection characteristics
Protection Condition Spec
OVP nominal AC input
Output voltage<26V
Latch off.
OCP Auto-recovery <4A
SCP Auto recovery No damage.
3.1.3 DC to DC characteristics
Items Condition Spec Note
DC input voltage +19V input 18~20V
+5V output <100mv
Ripple and Noise
Audio 5V output <100mv
With dummy
load

Acer Acer –LCD-S243HL
+5V output <200mv
Audio 5V output <500mv
See note 2
With system
+5V output Vcc5V:4.85V~5.35V
DC Output Voltage
Audio 5V output audio 5v:4.8V~5.3V
DC output loading capability Vcc5V/1.0A
Audio 5V/1.0A
Rise Time <50mS
Dynamic load change
Overshoot <10%
Efficiency ≥80%
Note 2: Tested by DC loading side parallel with a 47uF/EC and 0.1uF/Ceramic Capacitors and measured
band-width with DC-20MHz.
Table-1
Status H-sync V-sync Video Power LED
Power On on on active ≤32W Blue
off on blanked < 1W Amber
on off blanked < 1W Amber
Power Saving
off off blanked < 1W Amber
Power Off -- -- -- < 1W Off
3.2 Backlight Power Supply
Items Specification
Panel M240HW01 V6 2*8Bar LED
Input Voltage 18---20V
Input curren
t
1.2A (Typ.), 1.5A (Max.)
On/Off switch level 3.6V V≧on 2.0 V (on)≧
-0.3v ≤V off ≤0.8 V (off)
Brightness PWM Duty (ACM Off) 30%~100%
Brightness PWM Duty (ACM On) 0%~100%
LED operating Voltage 38Vrms(min);40.6Vrms (Type); 44.2Vrms (max)
20mA (Typ.)
LED Current
25mA (Max.)
Efficiency ≥80%

Acer Acer –LCD-S243HL
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)
Chromaticity Coordinate
Mode
x y
Cool 9300K 0.283 ± 0.030 0.297 ± 0.030
Warm 6500K 0.313 ± 0.030 0.329 ± 0.030
User Panel While x Panel While y

Acer Acer –LCD-S243HL
3.5 Brightness uniformity
The test standard conditions refer to Sec 3.3.
%70≥
)(backlightpointsnineofluminanceMax. )(backlightpointsnineofluminanceMin.
4. Input / Output Signal Specifications
4.1 Audio in
4.1.1 Input impedance ﹕≧10K ohm
4.1.2 Frequency response range ﹕200Hz ~ 20kHz
4.2HDMI x2
HDMI type A Connector Pin assignment:
19 18 17 16 15 14 13 12 10 9 8 7 6 5 4 3 2 1
11
19 18 17 16 15 14 13 12 10 9 8 7 6 5 4 3 2 1
11
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
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+

Acer Acer –LCD-S243HL
4.3 VGA in
4.3.1 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
9 PC +3.3/+5V
10 Sync. Ground
11 N/C
12 DDC SDA
13 H sync
14 V sync
15 DDC SCL

Acer Acer –LCD-S243HL
4.3.2 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 30K~80KHz
V-Sync Frequency 55~75Hz
4.4 Timing table
Mode Resolution
(active dot)
Resolution
(total dot)
Horizontal
Frequency (KHz)
Vertical
Frequency (Hz)
Nominal Pixel
Clock (MHz) Write in EDID
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
MAC [email protected] 864x525 35 66.66 30.24 23H
VESA 720x400@70Hz 900x449 31.469 70.087 28.322 23H
800x600@56Hz 1024 x 625 35.156 56.250 36.000 23H
800x600@60Hz 1056 x 628 37.879 60.317 40.000 23H
SVGA
800x600@72Hz 1040 x 666 48.077 72.188 50.000 N/A
1024x600@60Hz 1312x622 37.320 60.000 48.964 N/A
1024x768@60Hz 1344x806 48.363 60.004 65.000 24H
XGA 1024x768@70Hz 1328x806 56.476 70.069 75.000 24H
1152x864@75Hz 1600x900 67.5 75 108 26H~27H
VESA 1280x960@60Hz 1800x1000 60 60 108 N/A
SXGA 1280x1024@60Hz 1688x1066 63.981 60.020 108.000 25H
VESA 1280x720@60Hz 1650x750 44.955 59.940 74.176 N/A
1280x800@60Hz 1680x831 49.702 59.810 83.500 28H~29H
WXGA 1360x768@60Hz 1792x795 47.712 60.015 85.500 N/A
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
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
UXGA
1920x1080@60Hz 2080x1111 66.587 59.934 138.500

Acer Acer –LCD-S243HL
4.5 HDMI timing table
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

Acer Acer –LCD-S243HL
4.6 Audio output SPEC
Specification
Items
Min TYP MAX
TEST CONDITIONS
Output power (W) 1.6 2.0 2.4 THD+N = 10%﹐AT 1KHz 1Vrms
Output impedance (Ω) 3.4 4 4.6 AT 1KHz 1Vrms
Total harmonic distortion plus noise --- --- 10% Po≦2.0W
Signal to noise ratio (dB) 40 --- --- THD+N≦5%
PWM frequency (KHz) 200 250 300
Note: The low pass RC Filter (R=100Ω/ C=0.047uF) for Class-D Output Power and THD+N Measurement
4.7 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)

Acer Acer –LCD-S243HL
4.7.1 VGA EDID table
0 1 2 3 4 5 6 7 8 9 A B C D E F
0 00 FF FF FF FF FF FF 00 04 72 CF AD 00 00 00 00
1 19 13 01 03 08 35 1E 78 EA 60 85 A6 56 4A 9C 25
2 12 50 54 B3 0C 10 71 4F 81 00 95 00 D1 C0 01 01
3 01 01 01 01 01 01 02 3A 80 18 71 38 2D 40 58 2C
4 45 00 13 2B 21 00 00 1A 00 00 00 FC 00 53 32 34
5 33 48 4C 0A 20 20 20 20 20 20 00 00 00 FD 00 38
6 4C 1F 53 12 00 0A 20 20 20 20 20 20 00 00 00 FF
7 00 30 30 30 30 30 30 30 30 30 30 30 30 0A 00 BD
4.7.2 HDMI EDID table
0 1 2 3 4 5 6 7 8 9 A B C D E F
0 00 FF FF FF FF FF FF 00 04 72 CF AD 00 00 00 00
1 19 13 01 03 80 35 1E 78 EA 60 85 A6 56 4A 9C 25
2 12 50 54 B3 0C 10 71 4F 81 00 95 00 D1 C0 01 01
3 01 01 01 01 01 01 02 3A 80 18 71 38 2D 40 58 2C
4 45 00 13 2B 21 00 00 1A 00 00 00 FC 00 53 32 34
5 33 48 4C 0A 20 20 20 20 20 20 00 00 00 FD 00 37
6 4B 1E 50 12 00 0A 20 20 20 20 20 20 00 00 00 FF
7 00 30 30 30 30 30 30 30 30 30 30 30 30 0A 01 4A
0 02 03 22 F2 23 09 7F 07 4E 01 02 03 84 05 06 07
1 10 11 12 15 93 1F 14 83 01 00 00 66 03 0C 00 10
2 00 00 8C 0A D0 8A 20 E0 2D 10 10 3E 96 00 13 2A
3 21 00 00 18 01 1D 00 72 51 D0 1E 20 6E 28 55 00
4 13 2A 21 00 00 1E 01 1D 80 18 71 1C 16 20 58 2C
5 25 00 13 2A 21 00 00 9E 01 1D 00 BC 52 D0 1E 20
6 B8 28 55 40 13 2A 21 00 00 1E 01 1D 80 D0 72 1C
7 16 20 10 2C 25 80 13 2A 21 00 00 9E 00 00 00 FF
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

Acer Acer –LCD-S243HL
5.1 Panel general specifications
Item Describe
Supplier AUO
Model name M240HW01 V6
Display Area(mm) 531.36(H)x298.89(V)
Pixel Pitch(mm) 0.27675(H) ×0. 27675 (V)
Display Colors 16.7M colors (RGB 6-bit + Hi_FRC)
Number of Pixel 1920(H) × 1080(V),Full HD
Brightness 250 cd/m2 (TYP.)
Contrast Ratio 1000 (TYP.)
Viewing Angle 170 (Horizontal) / 160(Vertical) (CR≧10)
Display Mode Normally White
Response Time 5ms (TYP. ON/OFF)
Surface Treatment Anti-Glare, 3H
Lamp 2 LED lightbars
Outline Dimension 556.0(W) ×323.2(H) ×9.90(D)
Notice: Other second panel please refer to panel spec

Acer Acer –LCD-S243HL
5.2 Optical characteristic of LCD panel
The test methods for the below items’ definition, please refer to the specification of INL MT230DW01 panel.
Item Unit Conditions Min. Typ. Max. Remark
Right
[degree] Horizontal Left 150 170 - -
Up
Viewing Angle
(CR >= 10)
[degree] Vertical Down 140 160 -
-
Contrast ratio Normal Direction 600 1000
[msec] Rising Time - 3.5 7.4
[msec] Falling Time - 1.5 2.6
Response Time [msec] Rising + Falling - 5 10
Red x 0.640
Red y 0.349
Green x 0.284
Green y 0.617
Blue x 0.142
Color Chromaticity
(CIE)
Blue y 0.067
White x 0.313
Color Coordinates (CIE)
White
White y
Typ-0.03
0.329
Typ+0.03
Luminance Uniformity [%] 9 points
measurement
70% 75%
White Luminance at
CCFL 7.5mA(center point)
[cd/m2]
200 250 -
5.3Keypad Function
5.3.1 Control buttons
[POWER] Power on or power off the monitor
[►], [◄]
A. When “Main OSD” displays, press these keys to change the contents of an adjustment
item, or change an adjustment value
B. When “Main OSD” un-displays, press [►] to show “Audio” OSD and increase the
volume, press [◄] to show “Audio” OSD and decrease the volume .
[MENU]
A. When “Main OSD” un-displays, press [MENU] to enter OSD interface.
B. When “Main OSD” displays, press [MENU] to perform function of menu icon that is
highlight or enter next level menu.
[AUTO]
A. When “Main OSD” un-displays, press [AUTO] to perform auto-adjustment
B. When “Main OSD” displays, press [AUTO] to return to previous level menu
C. When “Empowering Technology OSD” displays, press [AUTO] to exit the OSD
[e Color ]
A. When “Main OSD” un-displays, press [e Color] to show “Empowering Technology OSD”.
B. When “Main OSD” displays, press [e Color] to exit the OSD, and to show “Empowering
Technology OSD”
5.3.2 Hot Key Operation
HOT KEY OPERATION
FUNCTION e Color AUTO MENU ◄ ► POWER DESCRIPTION

Acer Acer –LCD-S243HL
FACTORY
MODE ●ON
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.

Acer Acer –LCD-S243HL
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 Control
Range Default Value
User
Text
Standard
Graphics
Acer e color
Management empowering Technology
Movie
--- Standard
User mode 77
Text mode 44
Standard mode 77
Graphics mode 97
Brightness --- --- 0～100
Movie mode 77
User mode 50
Text mode 50
Standard mode 50
Graphics mode 60
Contrast --- --- 0～100
Movie mode 56
H. Position 0～100 50
V. Position 0～100 50
Focus 0～100 ---
Clock
--- ---
0～100 50 (1)
Warm --- --- (Default color temp)
Cool --- --- ---
Red 0～100 80
Green 0～100 80
Color Temp
User
Blue 0～100 80
Picture
Auto Configure --- --- --- ---
H. Position --- --- 0～100
V. Position --- --- 0～100 3
OSD
OSD Timeout --- --- 10～120 10
Full --- ---
Wide Mode Aspect --- --- Full
ON
DDC/CI OFF --- --- ON
ON
ACM OFF --- --- OFF
VGA --- ---
HDMI-1 --- ---
Setting
Input
HDMI-2 --- ---
---

Acer Acer –LCD-S243HL
EMEA NO-EMEA
--- ---
English English --- ---
Russian 繁體中文 --- ---
Deutsch Deutsch --- ---
Français Français --- ---
Español Español --- ---
Italiano Italiano --- ---
Dutch 简体中文 --- ---
Language
Finnish 日本語 --- ---
English
Reset --- --- --- ---
Resolution --- --- ---
H. Freq --- --- ---
V. Freq --- --- ---
Input Type --- --- ---
Info
S/N --- --- ---
(2)
Volume --- --- --- 0～100 50
Notes: (1) Clock default 50 is for Visa timing. Others depend on timing.
(2) Depend on timing & S/N