Acer G195W User manual

Acer Acer –LCD-G195W
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Service Manual
LCD Monitor Acer G195W

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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 G195W Service Manual

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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.

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01 Product Specification
1. General:
G195W series LCD monitor is designed with a wide screen 19” 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 1440x900@60Hz. It support HDCP and color management function.
1.1 Main Features
Maximum resolution : 1440x900 @ 60Hz
Back light system : 4 CCFL (top & bottom edge side)
Pixel pitch : 0.2835 (H) x 0. 2835 (V)
Display area : 408.24 (H)255.15(V) 19 inch diagonal
Brightness :≥250cd/m²
Contrast ratio :1000׃1(typ.) (1)
ACM (option) :50000:1
Response time (Tr+Tf) :5ms(typ.) (2)
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
(option)
Audio
cable
(option
)
Warranty
card Quick-start Guide
Description 1.8m 1.8m 1.8m 1.8m 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
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

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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)
Figure 1 Absolute Ratings of Environment
2.2 Safety, EMC, Ergonomics and Compatibility Requirements
EMC
Safety
EMC&Safety
Ergonomics

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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
Items Condition Spec Note
MTBF Operating condition is 25°C≧60,000 Hours Excluding the
LCD, CCFL
CCFL Life time Luminance becomes 50% ≧50,000 Hours(min) 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 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~1.3A
audio 5v loading:0A~1.0A
Vcc24V:23V~28V
Vcc5V:4.85V~5.35V
audio 5v:4.5V~5.5V
For system active

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5v loading:0.04A~1.3
A
24V 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/1.3A
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 45W ( 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
Power On on on active ≤40W Blue
off on blanked < 1W Yellow
on off blanked < 1W Yellow
Power Saving
off off blanked < 1W Yellow
Power Off -- -- -- < 1W Off
3.1.4 Backlight Power Supply
Items Specification
Panel MT19AW02
Lamp 4 CCFL
Input Voltage DC 23~28 V
Input current 1.0A (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)
20%~100%
Brightness PWM Duty
(ACM On) 10%~100%
CCFL operating
Voltage 730Vrms (Typ.),
CCFL Current 2.0 mA (min.)

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7.0mA (Typ.)
7.5mA (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 : 1366 x 768
Video input level : 700 mV ± 2%
Warm-up time : 30 minutes
LCD Module BL
INL: MT185GW01 V.0 ≥250 cd/m2
Set brightness control and also contrast control at maximum, to measure the screen center, the light output shall ≥BL cd/m2
(as panel spec).If phase in other second panel, pls refer to the panel spec.
3.3White balance
The test standard conditions refer to Sec 3.3.(Brightness control is at 100 contrast control is at 50 )
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.
%
≥75
)(backlightpointsnineofluminanceMax.
)(backlightpointsnineofluminanceMin.

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3.5 Audio Signal(option)
Specification
Items Min TYP MAX TEST CONDITIONS
Input impedance(Ω)10k --- ---
Frequency response range(Hz) 200 --- 20k
Signal to noise ratio(dB) 40 --- ---
THD+N = 10%﹐@1KHz 1Vrms
Output power(W) 0.8 1.0 1.2
THD+N = 10%﹐@1KHz 1Vrms
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 connectors, this unit can support FH= 31~80 KHz, Fv=55~75Hz,
Mode Resolution
(active dot) Resolution (total dot) Horizontal Frequency (KHz) Vertical Frequency (Hz) Nominal Pixel Clock (MHz)
EDID
640x480@60Hz 800 x 525 31.469 59.941 25.175 23H
640x480@72Hz 832 x 520 37.861 72.809 31.500 23H
640x480@75Hz 840 x 500 37.500 75.000 31.500 23H
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
800x600@72Hz 1040 x 666 48.077 72.188 50.000 24H
SVGA
800x600@75Hz 1056x625 46.875 75.000 49.500 24H
MAC [email protected] 1152x667 49.722 74.55 57.28 24H
1024x768@60Hz 1344x806 48.363 60.004 65.000 24H
1024x768@70Hz 1328x806 56.476 70.069 75.000 24H
XGA
1024x768@75Hz 1312x800 60.023 75.029 78.750 24H
MAC 1152x870@75Hz 1456x915 68.681 75.062 100.000 25H
1152x864@75Hz 1600x900 67.5 75 108 26~27H
VESA 1280x960@60Hz 1800x1000 60 60 108 NA
1280x1024@60Hz 1688x1066 63.981 60.020 108.000 NA
SXGA 1280x1024@75Hz 1688x1066 79.976 75.025 135.000 NA

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VESA 1280x720@60Hz 1650x750 44.955 59.940 74.176 28~29H
1280x800@60Hz 1680x831 49.702 59.810 83.500 2A~2BH
WXGA 1360x768@60Hz 1792x795 47.712 60.015 85.500 NA
1440x900@60Hz 1904x931 55.935 59.887 106.500 2C~2DH
WXGA+ 1440x900@75Hz 1936x942 70.635 75.000 136.750 NA
4.3 Timing requirements
Scan Frequency Condition Specification
Horizontal Sync polarity: (+) or (-) 30 ~ 80 KHz.
Vertical Sync polarity: (+) or (-) 55-75Hz
Out of range
Excluding
Horizontal 30~80 KHz or
Vertical 55-75 Hz
Message “Input Not Supported” on screen
4.4 DDC date
G195W 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 1E 01 00 00 00 00
1 24 13 01 03 08 29 1A 78 EA D7 A5 A2 59 4A 96 24
2 14 50 54 BF EE 80 71 4F 81 C0 81 00 95 00 01 01
3 01 01 01 01 01 01 9A 29 A0 D0 51 84 22 30 50 98
4 36 00 9A 00 11 00 00 1C 00 00 00 FF 00 30 30 30
5 30 30 30 30 30 30 30 30 30 0A 00 00 00 FD 00 37
6 4B 1E 50 0E 00 0A 20 20 20 20 20 20 00 00 00 FC
7 00 47 31 39 35 57 0A 20 20 20 20 20 20 20 00 9A
G195W 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 1E 01 00 00 00 00
1 24 13 01 03 80 29 1A 78 EA D7 A5 A2 59 4A 96 24
2 14 50 54 BF EE 80 71 4F 81 C0 81 00 95 00 01 01
3 01 01 01 01 01 01 9A 29 A0 D0 51 84 22 30 50 98
4 36 00 9A 00 11 00 00 1C 00 00 00 FF 00 30 30 30
5 30 30 30 30 30 30 30 30 30 0A 00 00 00 FD 00 37
6 4B 1E 50 0E 00 0A 20 20 20 20 20 20 00 00 00 FC
7 00 47 31 39 35 57 0A 20 20 20 20 20 20 20 00 22
5. LCD Characteristic & Performance
All the tests to verify specifications in this section shall be performed under the following standard conditions unless
otherwise noted. The standard conditions are: