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Electric adjustment
Note:
The circuit has been accurately adjusted at the factory. DO NOT attempt to adjust the following circuit as it
may cause serious damage to property and product safety unless you have to adjust it during maintenance.
Before adjustment, please turn on the projector to preheat at least 10 minutes.
Caution:
Take the UV radiation measures to protect the eyes and skin during maintenance.
Note:
Make sure to complete these adjustments within 25 minutes to protect against UV radiation.
1. ADC adjustment
Input signal
Computer Signal......... 0.7Vp-p/75 Terminal (XGA16 Gray Scale Mode Diagram)
Component Video Signal....1.0Vp-p/75 Terminal (Component Video Signal) (480i 100% Color Bar)
Input signal type
VGA Signal Source Input
1. When choosing VGA channel, input 16 gray scale pattern.
2. Enter service mode, select group 260, item 0, change the setting value from "0" to "1";
3. When OK appears, the adjustment ends.
Component Video Signal Source Input
1. When choosing COMPONENT channel, enter 8-color 100% color bar map;
2. Enter the service mode, select group 260, item 0, change the setting value from "0" to "1";
3. When OK appears, the adjustment ends.
.
√ Note:
* The above adjustments should be made when replacing the MainBoard
* Refer to "Service adjustment menu operation" for entering service mode and adjust the service data.
16 Gray Scale Pattern Diagram
White 100%
White 0%
8-colour 100% color bars map
W
Y
C
G
M
R
B
BK
White 100%
White 0%
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