Casio CTK-1100 - Auto Power Off Function

CTK-1100
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KEYBOARD PCB (M800-KYA1/KYA2)E.
Unsolder one FFC connected to the M820-MDA1 PCB.E-1.
FFC (M800-KYA2)
Disengage the hooks and then remove the M800-KYA1/KYA2 PCBs.E-2.
M800-KYA1 PCB M800-KYA2 PCB