Acer D240H User manual

Acer Acer –LCD-D240H
Service Manual
LCD MonitorAcer D240H

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 2006 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 D240H Service Manual

Acer Acer –LCD-D240H
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-D240H
01 Product Specification
1. General:
Acer D240H is designed with LVDS interface and VGA/DVI-D/HDMI input, and
Embedded DPF Function ,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. It can support 720P when DPF Mode,The image can be adjusted
through OSD control. It support HDCP and color management function.
1.1 Main Features
Maximum resolution : 1920(x3) x 1080 @ 60Hz
Back light system : 4 CCFL (top & bottom edge side)
Pixel pitch : 276.75 um (H) x 276.75 um (V)
Display area : 531.36mm (H) x 298.89mm (V)
Brightness : 300cd/m² (TYP.)
Contrast ratio : 1000׃1 (TYP.)
DCR :80000:1 (Max)
Response time (Tr+Tf) : 5ms (TYP. ON/OFF)
2ms (Gray to Gray)
Viewing angle : 170° (H)/ 160°(V), (TYP.)
Input interface : Analog (D-sub 15 pin)
Digital Option (DVI-D 24 pin & HDMI 19Pin)
Power management : Compatible with VESA DPMS
Plug & Play : VESA DDCCI
OSD language : English, French, Spanish, Italian, Deutsch,
Simplified Chinese, Traditional Chinese, Japanese
(Dutch, Finnish, Russian depend on sale region)
Universal AC power supply
1.2 Accessories
AC Power Cord : 1.8 m. (Black. Cord type depend on sale region)
VGA cable : 1.8 m. (15 pin D-SUB, black cable with blue male connector)
User manual : English (640Mb CD)
Warranty card :
DVI cable (option) : 1.8 m. (18+1 pin, black cable with white connector)
HDMI cable (option) : 1.8 m. (19 pin, black cable with white connector)

Acer Acer –LCD-D240H
USB: USB2.0 (optional function)
Webcam: 1.0M resolution(1280 x 800), standard USB2.0 interface, array microphone
(optional function)
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
Temperature range 0°C to 50°C
Relative humidity 5% to 90%
Altitude 0 to 3048M (10000 ft)
Storage
Temperature range -20°C to 60°C
Relative humidity 5% to 90% (not condense)
Altitude 0 to 9144M (30000 ft)
2.2 Safety, EMC, Ergonomics and Compatibility Requirements
Items Description
UL/c CB TUV/G CCC Other
Safety ●●●●
FCC CE CCC VCCI-B
EMC ●●●●
TCO TCO03
Ergonomics ●●
Windows Windows 2000 Windows Windows
Compatibility ●●●●
Energy StarPower
Mana
g
ement ●
2.3 Electrostatic Discharge Requirements

Acer Acer –LCD-D240H
Reliability
Items Condition Spec Note
MTBF T=25℃>50,000 Hours，
CCFL Life time Luminance
becomes 50% 50,000 Hours(Typ) Note1
Note1. Display an all WHITE field at mid Brightness and Contrast settings.
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 2.0A(max)AC Input Current
240Vac 0.8A(max)
115Vac,cold star,25°C 35A (max)
Inrush Current
230Vac,cold star,25°C 70A(max)
See Note2
AC-DC power Efficiency DC output full loading ≥79%
Note2. Before each test, the buck capacitor need to be discharged.
Beforeeachtest,itmust be 10 minutes at least after the latest test.
Hot star not component be damaged.
3.1.2 Output characteristics
Items Condition Spec Note
+25V output <800mv
+5V output
USB +5V output:
Audio +5V output:
<500mv
<150mv
<500mv
With system See note 3
+25V output <480mv
Ripple and Noise
+5V output
USB +5V output:
Audio +5V output:
<100mv
<100mv
<100mv
With dummy Load
25V loading:0.3A~1.4A
5V loading:0.75A~1.5A
Audio 5V: 0A~1.2A
USB 5V: 0A~1.5A
Vcc25V:23.2V~28V
Vcc5V: 4.75V~5.25V
Audio 5V: 4.95V~5.45V
USB 5V: 4.75V~5.25V
For system active
DC Output Voltage
25v loading:0.1A~1.5A
5V loading: 0A
Vcc25V: 23.2V~30V
Vcc5V: 4.75V~5.25V
For power saving or DC
off
Item Condition Spec
Contact discharge: 4KV
Contact discharge: 8KV ●
Air discharge : 8KV
Electrostatic
Discharge IEC61000-4-2(EN55024)
Air discharge : 15KV ●

Acer Acer –LCD-D240H
DC output loading
capability
Vcc5V/1.8A,
Vcc25V/1.4A
Audio 5V: 1.5A
USB 5V: 1.5A
Rise Time <50mS
Dynamic load change
Hold-up time AC input: 100V~240V >10mS
Overshoot <10%
Turn on delay time 2S
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. Ripple voltage of +25V is less than 1500mv when enter into burst mode.
3.1.3 Protection characteristics
Protection Condition Spec
OPP(Over current protection) nominal AC input 90W ( min )
SCP(short circuit protection) with auto-recovery function
OVP(Over voltage protection) Auto recovery <output capacitor voltage
OTP(Over temperature protection) NA
Fuse protection NA
Table-1
Status H-sync V-sync Video Power LED
Power On on on active ≤70W White
off on blanked < 2W Amber
on off blanked < 2W Amber
Power Saving
off off blanked < 2W Amber
Power Off -- -- -- < 1W Off
3.2 Backlight Power Supply
Panel: AUO-M240HW01-V2
Items Specification
Lamp 4 CCFL
Input Voltage 23.2---28V
Input curren
t
1.2A (Typ.), 1.4A (Max.)
On/Off switch level 3.6V≧V on≧2.0 V (on)
-0.3v ≤V off ≤0.8 V (off)
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) 35%~100%
Brightness PWM Duty (ACM On) 3%~100%
CCFL operating Voltage 900Vrms (Typ.),
7.5mA (Typ.)
CCFL Current
8.0mA (Max.)

Acer Acer –LCD-D240H
CCFL startup voltage ≧2000 Vrms (0˚C)
CCFL startup voltage ≧1850 Vrms (25˚C)
Operating frequency 40~60 KHz
Protect delay time > 1 second
Efficiency ≥75%
Note: Other panels please refer to the reference panel specs.
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 ≥240 cd/m2 .
3.3 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
3.4 Brightness uniformity
The test standard conditions refer to Sec 3.3.

Acer Acer –LCD-D240H
%≥75
)(backlightpointsnineofluminanceMax.
)(backlightpointsnineofluminanceMin.
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
4.2.1 Input impedance ﹕≧10K ohm
4.2.2 Frequency response range ﹕200Hz ~ 10kHz
4.3 USB in (Option)
The USB 2.0 includes 4 pins;
pin1:VBUS; pin2:DM; pin3:DP; pin4:GND
4.4 HDMI in
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 TMDS Clock shield
2 TMDS Data2 shield 12 TMDS Clock-
3 TMDS Data2- 13 CEC
4 TMDS Data1+ 14 No connect
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-D240H
4.5 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 0-
3 TMDS Data 2/4 shield 18 TMDS Data 0+
4 19 TMDS Data 0/5 shield
5 20
6 DDC Clock 21
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
13
14 +5V Power
15 GND
4.6 VGA in
4.6.1 D-sub Connector Pin assignment:
Pin Symbol
1 Red Video
2 Green Video
3 Blue Video
4 N/C
5 Ground
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

Acer Acer –LCD-D240H
15 DDC SCL
4.6.2 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 31K~83KHz
V-Sync Frequency 49~76Hz
4.7 Timing table
VESA MODES
Horizontal Vertical
Mode
Resolution
Nominal
Frequency
+/-0.5KHz Sync Polarity
Nominal
Frequency
+/-1Hz
Sync
Polarity
Nominal Pixel
Clock (MHz)
640*480@60Hz 31.469 N 59.941 N 25.175
640*480@72Hz 37.861 N 72.809 N 31.5
VGA
640*480@75Hz 37.5 N 75 N 31.5
800*600@56Hz 35.156 P 56.25 P 36
800*600@60Hz 37.879 P 60.317 P 40
800*600@72Hz 48.077 P 72.188 P 50
SVGA
800*600@75Hz 46.875 P 75 P 49.5
1024*768@60Hz 48.363 N 60.004 N 65
1024*768@70Hz 56.476 N 70.069 N 75
XGA
1024*768@75Hz 60.023 P 75.029 P 78.75
1152*864@75Hz 67.5 P 75 P 108
1280*960@60Hz 60 P 60 P 108
1280*720@60Hz 44.955 P 59.94 P 74.176
1280*1024@60Hz 63.981 P 60.02 P 108
SXGA
1280*1024@75Hz 79.976 P 75.025 P 135
WXGA 1360*768@60Hz 47.712 P 60.015 P 85.5
1440*900@60Hz 55.935 N 59.89 P 106.5
WXGA+
1440*900@75Hz 70.635 N 74.984 P 136.75
1680*1050@60Hz 65.29 N 59.954 P 146.25
WSXGA+
1680*1050@75Hz (VGA Only) 82.306 N 74.89 P 187.00
1600*1200@60Hz 75 P 60 P 162
1920*1080(Red)@60Hz 66.587 P 59.93 N 138.5
UXGA
1920*1080@60Hz (VGA Only) 67.158 N 59.96 P 173
IBM MODES
720x400@70Hz 31.469 N 70.087 P 28.322
MAC MODES
VGA 640*480@66.7Hz 35 P
66.667 N 30.24

Acer Acer –LCD-D240H
SVGA 832*624@75Hz 49.725 N 74.55 N 57.283
XGA 1152*870@75Hz 68.681 N 75.062 N 100
Other MODES
WXGA 1280*800@60Hz 49.702 N 59.81 P 83.5
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

Acer Acer –LCD-D240H
4.8 HDMI timing table
For DVD Player Input, Attached timing is supported :
Mode Resolution Pixel Clock MHz H sync KHz V sync Hz Ratio
VGA 640 x 480p 25.2 31.5 60 4:3
NTSC (480i) 720 x 480 13.50 15.73 60 4:3
NTSC (480p) 720 x 480 27.00 31.47 60 4:3
PAL (576i) 720 x 576 13.50 15.63 50 4:3
PAL (576p) 720 x 576 27.00 31.27 50 16:9/4:3
720p 1280 x 720 74.25 37.5 50 16:9
720p 1280 x 720 74.25 45 60 16:9
1080i 1920 x 1080 74.25 28.125 50 16:9
1080i 1920 x 1080 74.25 33.72 60 16:9
1080P 1920 x 1080 148.50 56.250 50 16:9
1080P 1920 x 1080 148.50 67.50 60 16:9
4.9 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(at 1KHz 1Vrms,
200HZ <f<10KHZ)
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
4.10 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)
4.10.1 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 74 00 00 00 00 00
1 00 00 01 03 68 35 1D 78 EA 60 85 A6 56 4A 9C 25
2 12 50 54 AF CF 00 81 80 71 4F 95 00 95 0F A9 40
3 B3 00 01 01 01 01 1A 36 80 A0 70 38 1F 40 30 20
4 35 00 13 2A 21 00 00 1A 00 00 00 FC 00 44 32 34
5 30 48 0A 20 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 CS

Acer Acer –LCD-D240H
4.10.2 DVI 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 74 00 00 00 00 00
1 00 00 01 03 80 35 1D 78 EA 60 85 A6 56 4A 9C 25
2 12 50 54 AF CF 00 81 80 71 4F 95 00 95 0F A9 40
3 B3 00 01 01 01 01 1A 36 80 A0 70 38 1F 40 30 20
4 35 00 13 2A 21 00 00 1A 00 00 00 FC 00 44 32 34
5 30 48 0A 20 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 CS
4.10.3HDMI 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 74 00 00 00 00 00
1 00 00 01 03 80 35 1D 78 EA 60 85 A6 56 4A 9C 25
2 12 50 54 AF CF 00 81 80 71 4F 95 00 95 0F A9 40
3 B3 00 01 01 01 01 1A 36 80 A0 70 38 1F 40 30 20
4 35 00 13 2A 21 00 00 1A 00 00 00 FC 00 44 32 34
5 30 48 0A 20 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 01 95
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 10 8C 0A D0 8A 20 E0 2D 10 10 3E 96 00 06 23
3 21 00 00 18 01 1D 00 72 51 D0 1E 20 6E 28 55 00
4 06 23 21 00 00 1E 01 1D 80 18 71 1C 16 20 58 2C
5 25 00 06 23 21 00 00 9E 01 1D 00 BC 52 D0 1E 20
6 B8 28 55 40 06 23 21 00 00 1E 01 1D 80 D0 72 1C
7 16 20 10 2C 25 80 06 23 21 00 00 9E 00 00 00 CS
4.11 DPF function
D240H supportsDPF Function, which Embeded 2G Nandflash stroage ,it can also
communication with PC by connecting USB cable,and supports 4 IN 1 memory card
which includes SD, XD, MS, and MMC, besides the 4 kind’s memory card,it also
supports the adaptor card: Mini SD, MicroSD, MS Pro,MS,Duo, MS Pro Duo, RS
MMC, MMC Plus, RS MMC,and supports CF card slot include CFI, CF II,MD memory
card.User can easily switch to different functions though OSD Menue.
4.11.1.DPF function introduce

Acer Acer –LCD-D240H
1) Nand play photo function:
1. without any memory card, the screen will display slideshow photo from Nand storage,
2. If no photo files in Nand storage,the screen will display browser mode.
2) card reader function
Connect the USB upstream and the card read function will be started when D240H on Monitor mode..PC will find
the two USB devices are CF card and SD/MS/XD/MMC card, the two devices that in the DPF all can be operation by PC
4.11.2. Memory card test
1, Insert SD/MS/XD/MMC card, Select the memory on input source menu
2, Play photo ,the performance should be no color shift, the other function such as
Rotate,effect ,slideshow, next, forward, pause also should be passed.
Notes:
1. SD card family include mini SD, mobile SD,MMC memory card include RS MMC, RS MMC Plus, RS
MMC mobile.
2. MS card slot also support MS Pro, MS Duo, MS Pro Duo,
3. CF card slot support CFI,CF II and MD(Micro Drive) card.
4.11.3. Support format test
The D240H only support photo format as below. please check and confirm.

Acer Acer –LCD-D240H
4.11.4. DPF function test
4.11.4.1. DPF Monitor
keypad control flow
1.Switch toDPF
keypad flow
2. DPF play photo mode keypad flow
Category ext Yes/ No
.jpg
Photo .bmp

Acer Acer –LCD-D240H
3. DPF select photo mode flow
4. DPF setting menu flow

Acer Acer –LCD-D240H

Acer Acer –LCD-D240H
Setting menu layer-1

Acer Acer –LCD-D240H
Setting menu layer-2
Setting menu layer-3