ADJUSTMENT
MAIN PCB
1) Items to be adjusted:
Item | Measuring Instrument |
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Vop voltage setting | Voltmeter |
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2) Adjustment and Test Point Locations
(TOP VIEW)
Test point
3) Equipment connection/Procedure
Vop voltage setting | |
Set | Voltmeter |
| Output |
| V5 |
| Input |
| Input | Input | Adjust | Output | Output | Adjust for |
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| Connection |
| Point | Signal | Connection | Point |
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| VR1 | Voltmeter | V5 | Adjust for 4.3 ±0.1 V reading |
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| on voltmeter. |
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| Make fine adjustment accord- |
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| ing to the next instruction. |
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Eye
Watching the LCD at a 53.5° angle to the horizontal, adjust Vop voltage so that unenergized segments are seen dimly.
53.5°
LCD
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