Vcom Adjustment - Casio QV-10 Repair Manual

Vcom Adjustment

Procedure
Vcom adjustment
Oscilloscope
A fine adjustment of Vcom adjustment
VR302
TP-410
Probe
VR303
GND
6.0 +/- 0.1V
It is required whenever replacing the TFT-LCD.
Output point: TP-410
Adjust: VR-302 and VR303
1. Ajust VR303 so that square-wave to read
6.0 +/- 0.1V.
2. Adjust VR302 so that high level of the square-wave
is at 0 +/- 0.25V.
Select TEST mode to check a fine adjustment of Vcm
adjustment.
While pressing the MODE and Shutter button, slide to
the right to turn on power.
Press the self-timer and DEL button at a time.
Press (+) or (-) button to select the BLACK.
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