Acer P205H Series User manual

Acer Acer –LCD-P205H
- 0 -
Service Manual
LCD Monitor Acer P205H

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 P205H Service Manual

Acer Acer –LCD-P205H
2
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-P205H
3
01 Product Specification
1. General:
P205H series LCD monitor is designed with a wide screen 20.0” WXGA+ TFT LCD panel, LVDS interface, analog RGB signal input
and DVI-D signal input.It featured with embedded universal AC power supply. This monitor can support maximum resolution up to
1600 x 900@60Hz. It support HDCP and color management function.
1.1 Main Features
Maximum resolution : 1600 x 900 @ 60Hz
Back light system : 4 CCFL (top & bottom edge side)
Pixel pitch : 0.2768 (H) x 0.2768 (V)
Display area : 442.8(H)x249.2(V) 20.0 inch diagonal
Brightness :≥250cd/m²
Contrast ratio : 1000׃1(typ.) (1)
ACM (option) :20000:1
Response time (Tr+Tf) :5ms(typ.) (2)
GTG (Option) :2ms
Viewing angle : 160°(H)/ 160°(V), typ (3)
Input interface : Analog (D-sub 15 pin)
Digital Option(DVI-D 24 pin)
Power management : Compatible with VESA DPMS
Plug & Play : VESA DDCCI
OSD language
Non EU version : English, French, German, Italian, Spanish, Chinese S. Chinese T. Japanese
EMEA version : English, French, German, Italian, Spanish, Dutch, Finnish, Russian
Russian version : Russian
Universal AC power supply
Note (1)(2)(3): This item spec depend on the LCD panel.
1.2 Accessories
Items Power cable
(option)
VGA
cable
DVI
Cable
Audio
cable HDMI cable Warranty card
Quick-start
Guide
Camera CD
Wizard
Description 1.8m 1.8m 1.8m 1.8m 1.8m Multi Multi Multi
●●●●●●
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)
Quick-start Guide : User manual English (640Mb CD)
Audio cable : 1.8m. (Green/Blue header)
DVI cable : 1.8 m. (18+1 pin, black cable with white connector)
Audio Cable(option) : 1.8 m (Audio Line Cable Green/Blue header)
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
2.1.1 Operating:
Temperature range : 0°C to 40°C
Relative humidity : 20% to 90%
2.1.2 Storage note 1:

Acer Acer –LCD-P205H
4
Temperature range : -20°C to 60°C
Humidity range : 10% to 90%
2.1.3 Altitude
note 2
Operating 10000 ft (Ta=50, t=24h)
Storage 40000 ft (Ta=30, t=24h )
Note 1: Temperature and relative humidity range must be in the area shown as the following figure due to panel limited
Note 2: Altitude spec must not over panel spec.
Figure 1 Absolute Ratings of Environment
2.2 Safety, EMC, Ergonomics and Compatibility Requirements
Safety & EMC UL/ cUL, CE, CB, CCC, Nemko/Ergo, C-Tick (N214), VCCI,
FCC, CCC, BSMI,
Ergonomics Nemko/Ergo,MPR II,ISO13460-2
Compatibility Windows 98/Me/2000, Windows XP, Window Vista
Power Management Energy Star V4
2.3 Electrostatic Discharge Requirements
The subject unit must withstand ±8KV for contact discharge and ±15KV for air discharge of Electrostatic Discharge
and meet the standard of IEC61000-4-2(EN55024). (without discharge on VGA/DVI/HDMI pin)
Item Condition Spec Remark
Contact discharge : +/-4KV
Contact discharge : +/-8KV ●
Air discharge : +/-8KV
Electrostatic
Discharge Acer SPEC
Air discharge : +/-15KV ●
150pF/330ohm.
Each point 10
times.
1 time/Sec.
2.4 Reliability
The MTBF of this product shall be greater than 40,000 hours excluding the LCD panel. The LCD panel life which is
defined as the time period for the maximum luminance to reduce to 50% of the initial value is 40,000 hours minimum at
the condition of displaying 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

Acer Acer –LCD-P205H
5
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)
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 ≥80%
Note2. 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 Output characteristics
Items Condition Spec Note
+24V output <1000mv
+5V output <200mv
See note 2
audio 5V output <300mv
Ripple and Noise
24v loading:0.2A~1.2A
5v loading:0. 7A~1.5A
audio 5v loading:0A~1.0A
Vcc24V:23V~28V
Vcc5V:4.85V~5.35V
audio 5v:4.5V~5.5V
For system active
5v loading:0.04A~1.5
A
14V loading: 0A
audio 5v loading:0A
Vcc24V: 23V~30V Vcc5V:
4.85V~5.35V
audio 5v:4.5V~5.5V
For power saving or DC off
DC Output Voltage Vcc5V/1.5A
Vcc24V/1.2A
audio 5V/1.0A
DC output loading
capability
<50mS
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 nominal AC input 55W ( min )
SCP(short circuit protection) Before fuse with auto-recovery function
OVP(Over voltage protection) Auto recovery <output capacitor voltage
Table-1
Status H-sync V-sync Video Power LED

Acer Acer –LCD-P205H
6
Power On on on active ≤48W Blue
off on blanked < 2W Yellow
on off blanked < 2W Yellow
Power Saving
off off blanked < 2W Yellow
Power Off -- -- -- < 1W Off
3.1.4 Backlight Power Supply
Items Specification
Panel SEC LTM200KT01 panel
LGD LM200WD1-TLB1 panel
Lamp 4 CCFL
Input Voltage DC 23~28 V
Input current 1.1A (Typ.), 1.2A (Max.)
On/Off switch level 5.5V≧Von≧2.0 V (on)
-0.3v ≤Voff ≤0.8 V (off)
Brightness PWM Duty (ACM Off) 30%~100%
Brightness PWM Duty (ACM On) 10%~100%
CCFL operating Voltage 800Vrms (Typ.),
2.5 mA (min.)
7.0mA (Typ.)
CCFL Current
8.0 mA (Max.)
CCFL startup voltage ≧1700 Vrms (0˚C)
Operating frequency 40~60KHz
Protect delay time > 1 second
Efficiency ≥70% (Using dummy load)
Note: Other panels please refer to the reference panel specs.
3.2Brightness 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 : 1600 x 900
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 ≥240
cd/m2 (as panel spec)
3.3White balance
The test standard conditions refer to Sec 3.3.(Brightness control is at 100 contrast control is at 50 )
Mode Chromaticity Coordinate

Acer Acer –LCD-P205H
7
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 3.4.
(4)
Note (4): 25% is for Samsung panel LTM200KT01 (first source).The second source spec follow Sec 5.1.
3.5 Audio Signal(option)
Items Specification
Input impedance ≧10K ohm
Frequency response range 200Hz –20kHz
Signal to noise ratio ≧40 dB
Output power ≦1.5 W + 1.5 W(±20% tolerance), THD 10%.
Loading impedance 4 ohm
4. Input / Output Signal Specifications
4.1 Video signals
Analog RGB signal: 0.7Vp-p (Input impedance = 75 Ohm)
Sync: TTL level (Input impedance ≧1k Ohm)
Positive and negative sync of Separate Horizontal/Vertical Sync
Digital : TMDS Signal: (min) ±200mVpp@24Bit
4.2 Signal Timing
Through D-SUB/DVI/HDMI connectors, this unit can support FH= 31~84 KHz, Fv=56~75Hz, with maximum pixel clock
160MHz input signal and WXGA+ output. Modes details as below:
VESA MODES

Acer Acer –LCD-P205H
8
Horizontal Vertical
Mode Resolution Total Nominal
Frequency
+/-0.5KHz
Sync
Polarity
Nominal
Frequency
+/-1Hz
Sync
Polarity
Nominal
Pixel Clock
(MHz)
640*480@60Hz 800*525 31.469 N 59.941 N 25.175
640*480@72Hz 832*520 37.861 N 72.809 N 31.500
VGA
640*480@75Hz 840*500 37.500 N 75.000 N 31.500
800*600@56Hz 1024*625 35.156 P 56.250 P 36.000
800*600@60Hz 1056*628 37.879 P 60.317 P 40.000
800*600@72Hz 1040*666 48.077 P 72.188 P 50.000
SVGA
800*600@75Hz 1056*625 46.875 P 75.000 P 49.500
1024*768@60Hz 1344*806 48.363 N 60.004 N 65.000
1024*768@70Hz 1328*806 56.476 N 70.069 N 75.000
XGA
1024*768@75Hz 1312*800 60.023 P 75.029 P 78.750
1152*864@75Hz 1600*900 67.500 P 75.000 P 108.000
1280*960@60Hz 1800*1000 60.000 P 60.000 P 108.000
720x400@70Hz 900*449 31.469 N 70.087 P 28.322
VESA
1280*720@60Hz 1650x750 44.955 N 59.940 P 74.176
1280*1024@60Hz 1688*1066 63.981 P 60.020 P 108.000
SXGA 1280*1024@75Hz 1688*1066 79.976 P 75.025 P 135.000
640*[email protected] 864*525 35.000 P 66.667 P 30.240
1152*870@75Hz 1568*909 68.775 N 75.00 N 84.520
MAX
832*624@75Hz 1152*667 49.725 N 74.550 N 57.283
WXGA 1280*800@60Hz 1680*831 49.702 N 59.810 P 83.500
WXGA 1600x900@60Hz 2122x934 55.99 N 59.946 P 118.250
WXGA 1600*900@75Hz 1936*942 70.546 N 74.889 P 151.25
4.3 Timing requirements
The LCD monitor must be capable of displaying standard resolutions within the vertical frequency range of 56 ~ 75 Hz
and the horizontal scan range of 31~84 KHz with maximum pixel clock of 160MHz.
Vertical / Horizontal Sync polarity: positive or negative.
If input signal is out of range of horizontal 31~84 KHz or vertical 56-75Hz, or pixel clock large than 160MHz, message
“Input not Supported” is shown on screen.
4.4 DDC date
P205H Analog
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 D1 00 00 00 00 00
1 00 00 01 03 08 2C 19 78 EA DE 95 A3 54 4C 99 26
2 0F 50 54 BF EF 90 81 00 71 4F 81 40 81 C0 A9 C0
3 01 01 01 01 01 01 31 2E 40 00 62 84 22 30 58 A8
4 35 00 BB F9 10 00 00 1F 00 00 00 FD 00 38 4B 1F
5 54 10 00 0A 20 20 20 20 20 20 00 00 00 FF 00 30
6 30 30 30 30 30 30 30 30 30 30 30 0A 00 00 00 FC
7 00 50 32 30 35 48 0A 20 20 20 20 20 20 20 00 DA

Acer Acer –LCD-P205H
9
P205H DVI
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 D1 00 00 00 00 00
1 00 00 01 03 80 2C 19 78 EA DE 95 A3 54 4C 99 26
2 0F 50 54 BF EF 90 81 00 71 4F 81 40 81 C0 A9 C0
3 01 01 01 01 01 01 31 2E 40 00 62 84 22 30 58 A8
4 35 00 BB F9 10 00 00 1F 00 00 00 FD 00 38 4B 1F
5 54 10 00 0A 20 20 20 20 20 20 00 00 00 FF 00 30
6 30 30 30 30 30 30 30 30 30 30 30 0A 00 00 00 FC
7 00 50 32 30 35 48 0A 20 20 20 20 20 20 20 00 62
5. Function Specifications
5.1 Keypad Function
6.1.1 Control buttons
[AUTO]
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.
[MENU]
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.
[e Color ]
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
[POWER] Power on or power off the monitor
5.1.2Hot Key Operation

Acer Acer –LCD-P205H
10
HOT KEY OPERATION
FUNCTION
e Color AUTO MENU ◄►POWER
DESCRIPTION
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.
5.2 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
e-color empowering
technology
--- --- ---
Auto --- --- --- ---
Main menu Main menu (Pictiure) --- --- ---
Audio Audio menu --- --- ---
Function
Menu
Input --- --- --- ---
Acer eColor Management empowering
technology --- --- 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
Cool --- --- ---
Red 0～100 80
Green 0～100 80
Colour Temp
User
Blue 0～100 80
Picture
Auto Config --- --- --- ---

Acer Acer –LCD-P205H
11
OSD OSD Timeout --- --- 10～120 10
Full --- --- Default
Wide Mode
Aspect --- --- ---
DDC/CI --- --- --- ON
ACM --- --- --- OFF
Analog --- --- ---
Source
Digital --- --- ---
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
Setting
Reset --- --- --- ---
Resolution --- --- --- ---
H.Freq --- --- --- ---
V.Freq --- --- --- ---
Input Type --- --- --- ---
Info
S/N --- --- --- ---
Notes; ○
1Clock default 50 is for Visa timing. Others depend on timing.

Acer Acer –LCD-P205H
12
6. SOP of firmware upgrade (Manufacturer of Scaler is Mstar)
6.1 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_v3.7.5.exe
Manufacture of FW IC：PMC/SST/MX
6.2 Operational steps:
1. Connection: connect PC to PCBA with signal cable, and then keep AC and DC in open state.
2. Adjust ISP programming
Firstly, double click ISP_Tool_v3.7.5EXEI and open ISP program, then select “Device”, next select manufacturer model of
FW IC, which should be correspondent with that of PCBA FW IC. Double click Figure One.
Secondly﹐download FW software: first select “READ”, and then load FW software in Rooter (Fig.2).
FW IC
Model
One port of ISP
program card
is connected to
PC print port.

Acer Acer –LCD-P205H
13
Thirdly, select “Connect” and enter ISP MODE as in the following Figure 3.
Fourthly, select “AUTO”, and keep its default value. Click “RUN” for beginning programming. There will be prompting if
programming is OK.
Software
Checksum
FW software
rooter

Acer Acer –LCD-P205H
14
Note: if programming fails or success rate is not high, click “Config” and adjust its speed in “E2PROM DEVICE SETTING”

Acer Acer –LCD-P205H
15
◆Flowin
g
chart
After connecting, AC ON,
DC ON
Open ISP program
Choose manufacturer
and model of FW IC
LOAD FW software
Click Connect and enter
ISP MODE
Click AUTO and RUN for
beginning programming
Turn off power if
p
ro
g
rammin
g
is O
K
OK
OK
OK
OK
OK
OK NG
Choose Config
and adjust
pro
g
rammin
g

Acer Acer –LCD-P205H
16
02. Flat Panel Specification

Acer Acer –LCD-P205H
17

Acer Acer –LCD-P205H
18

Acer Acer –LCD-P205H
19