Casio CTK-900 Service Manual page 11

I Precaution while assembling the main PCB (M707-MD1).
Refer to the illustration below because many cables appear.
PCB (M705-LCD1M) PCB (M705-CN3M)
M705-CN2M PCB PCB (M705-CN1M)
JC(12pin)
JD(14pin)
PCB (M705-MA2M)
PCB (M705-MA1M)
JA(16pin) JB(17pin)
JE(10pin)
JC(12pin)
JF(12pin)
JD(14pin)
JA(16pin) JB(17pin)
PCB (M705-CN1M)
JE(10pin)
JF(12pin)
PCB (M705-MA1M)
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