Casio CTK-401 User Manual

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

Casio CTK-401 Specifications

General

Brand	Casio
Model	CTK-401
Category	Electronic Keyboard
Language	English