Canon FY8-23AV-000 manual Main motor fails to rotate, Copyboard fails to move

CHAPTER 4 TROUBLESHOOTING MALFUNCTIONS

9. The main motor fails to rotate.

Cause	Step	Checks	YES/NO	Remedies
Main motor (M1)	1	Set the meter to the ‘30VDC’	YES	Replace the main motor.
		range. Does the voltage
DC controller/DC			NO	Check the wiring from the
		between J903-1 (+) and J903-2
power supply PCB				motor to the DC controller/
		change from about 0 V to about
				DC power supply PCB; if
		20 V according to the operation
				normal, replace the DC
		of the main motor?
				controller/DC power
				supply PCB.

10. The copyboard fails to move.

Cause	Step	Checks	YES/NO	Remedies
Main motor (M1)	1	Is the main motor rotating?	NO	See “The main motor fails
				to rotate.”
Copyboard,	2	Push the copyboard by hand.	NO	Check the copyboard and
Copyboard drive		Does it move smoothly?		copyboard drive assembly.
assembly
DC controller/DC	3	Set the meter to the ‘200Ω’	YES	Check the wiring from the
power supply PCB		range. Disconnect J902 from		solenoid to the DC con-
		the copyboard drive solenoid,		troller/DC power supply
		and measure the resistance		PCB; if normal, replace
		between terminals of SL2.		the DC controller/DC
		Is it about 120Ω?		power supply PCB.
Copyboard drive			NO	Check the solenoid (SL2).
solenoid (SL2)

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