Service manual

ViewSonic Corporation Confidential - Do Not Copy Q7b-3
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(3) after opening the Hex document that you choose,pls select the NT68F633 (64K)
(4) begin to load MCU software: after press” AUTO”, then at this time will be loading the MCU
software,pls see the pattern as follow:
2. I/P 1280x1024 @75Hz CROSS TALK (PATTERN63) FH=79KHz,FV=75Hz
2-1.input the signal to D-SUB to execute AUTO ADJUSTING function，then CHECK the pattern
whether have interaction noise.(if still have noise ,we can slightly adjust the clock or phase
menu)
2-2. I/P1280x1024 @75Hz 32 Gray pattern (PATTERN48) CHECK the pattern can’t lack of color or
Have too much color．
2-3 TIMING CHECK
640x480@60/66/72/75Hz 800x600@56/60/72/75Hz
1024x768@60/70/75Hz 1280x1024@60/75Hz
832x624@75Hz 1152x864@75Hz
1280x960@60Hz 720x400@70Hz