Vcom Dc Adjustment - Casio EX-Z4 Service Manual & Parts List

Purpose
Readjust the VCOM value to minimize the flicker of the LCD after replacing the LCD or the main PCB.
Necessary tools
1. Camera (Charge its battery fully)
2. Photo diode (S2281-01) : See Fig 1.
3. Photo sensor amp (C2719) : See Fig 2.
4. BNC-BNC cable (E2573) x 2 : See Fig 3.
5. 9-volt alkaline battery (6LR61Y) x 2 : See Fig 4.
6. Oscilloscope
Preparation
1. The three tools can be obtained from the following global site.
Photo diode (S2281-01)
Photo sensor amp (C2719)
BNC-BNC cable (E2573)
www.hamamatsu.com/
2. 9-volt alkaline battery is a standard one, but can be obtained from the following global site as well.
www.panasonic.co.jp/global/
Fig1 Photo Diode (S2281-01)
Fig3 BNC-BNC Cable (E2573)

VCOM DC ADJUSTMENT

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Fig2 Photo Sensor Amp (C2719)
Fig4 6LR61Y