Casio CTK-541 - Rear Panel Connections; MIDI Terminals (OUT;IN); Sustain and Headphone Jacks; Power Input Jack

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ADJUSTMENT
MAIN PCB
1) Items to be adjusted:
2) Adjustment and Test Point Locations
Item
Measuring Instrument
Vop voltage setting Voltmeter
VR1
(BOTTOM VIEW)
Test point
(TOP VIEW)