Mcube CubeScan BioCon-500 Service Manual page 50

Service Manual for BioCon-500
⑩ Set the voltage to -18V, between pin14 and pin13 by turning R20.
⑪ Turn off the device.
⑫ Connect again LCD backlight cable to JP4 in control board.
⑬ Turn on the device again.
After that, turn R20 so you can get the adequate brightness of LCD.
- R20:
Turning clockwise (A direction), the absolute driver voltage is raised
Turning counter-clockwise (B direction), the absolute driver voltage is lowered.
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