Acer G225HQ, Service Manual

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VESA
1152x864@75Hz 1600x900 67.5 75 108
1280x960@60Hz 1800x1000 60 60 108
SXGA 1280x1024@60Hz 1688x1066 63.981 60.020 108.000
VESA
1280x720@60Hz 1650x750 44.955 59.940 74.176
WXGA
1280x800@60Hz 1680x831 49.702 59.810 83.500
1360x768@60Hz 1792x795 47.712 60.015 85.500
WXGA+ 1440x900@60Hz 1904x931 55.935 59.887 106.500
WSXGA+ 1680x1050@60Hz 2240*1089 65.290 59.954 146.250
UXGA
1600x1200@60Hz 2160x1250 75.000 60.000 162.000
1920x1080@60Hz 2576x1120 67.158 59.963 173.000
1920x1080@60Hz 2200x1125 67.500 60.000 148.500
1920x1080@60Hz 2080x1111 66.587 59.934 138.500
5.1.3 ADC calibration (Auto color balance adjustment)
~~ Analog only, it is not required for DVI-D input source
1. Setup input timing ICL-605( 1280x1024@75Hz ), pattern 42(5-Mosaic pattern with white color block)
with Analog signals from Chroma video pattern generator. (it depends on Scaler IC supplier’s
recommendation)
2.
Enter factory mode (press “Empowering” & “Power” buttons at the same time to turn on monitor).
3. Mov
e cursor into “Burn-in Mode” tag and select “On” to enable burn-in mode.
4.
Close OSD menu then press “Auto” button for auto color adjustment. (This procedure will get optimal
gain/offset(clamp) values)
5. Checking if the picture is ok, or reject this monitor and check its circuit board or wire/cable connection.
5.1.4 Color temperature adjustment
1. Setup input timing to any preset modes, pattern 41(full white color pattern) with Analog signals from
Chroma video pattern generator.
2.
Enter factory mode (press “Empowering” & “Power” buttons at the same time to turn on monitor).
3.
Move cursor into “Burn-in Mode” tag and select “On” to enable burn-in mode.
4. Make sure ADC calibration (auto color balance adjustment) had already been done.
5. Measure color temperature by Minolta CA-110 (or equivalent equipment).
6. Adjust the color temperature ~~ Two methods can be used to adjust RED, GREEN, BLUE value of
each color temperature, C0/Cool, C1/User & C2/Warm to meet following spec requirement, the 1
st
method is by using external PC and IIC alignment protocol to do automatic adjustment, and the 2
nd
method is by manually and must be in factory mode.
Color temperature
X+- 0.283+(-) 0.03
Y+- 0.297+(-) 0.03