Main motor unrotated, No paper supplied

M-3

Main motor unrotated

Possible cause	Step	Check		Result	Remedy
Failure of	1	Is the connection of connector		No	Reconnect the connector.
connector		P9 on the panel sensor PCB
		correct?
Main motor (M1)	2	Disconnect connector P9 from		No	Replace the main motor.
		the panel sensor PCB.
		Measure the resistance
		between the connector pins of
		the main motor by using a
		circuit tester.
		Do the measured resistances
		satisfy the prescribed values in
		the table below?
		P9-5 and P9-6	Approx.4.5
		P9-7 and P9-8	Approx.4.5
Main PCB	3	Is the problem solved by		Yes	Replace the main PCB.
		replacing the main PCB?
Sub motor	4	Disconnect connector P9 from		No	Replace the sub motor.
unrotated		the panel sensor PCB.
		Measure the resistance
		between the connector pins of
		the main motor by using a
		circuit tester.
		Do the measured resistances
		satisfy the prescribed values in
		the table below?
		P9-1 and P9-2	Approx.9.1
		P9-3 and P9-4	Approx.9.1

M-4

Possible cause	Step	Check	Result	Remedy
Connection	1	Is the contact of connector P3	No	Reconnect the connector.
failure		on the panel sensor PCB
		good?

Panel sensor	2	Set paper in the manual paper	No	Replace the panel sensor
PCB circuit		slot and make a test print by		PCB.
		pressing the switch on the
		control panel.
Paper pick-up		Does the voltage between pins	Yes	Replace the paper pick-up
clutch solenoid		2 (SOLENOID) and 1 (24V) of		solenoid.
		the P3 connector on the panel
		sensor PCB change from
		approx. 24V DC to 0V within
		the specified time?

MP tray unit	3	Is the surface of the separation	Yes	Clean the surface or replace.
failure		pad or the pick up roller
		stained or worn out?
Main PCB	4	Is the problem solved by	Yes	Replace the main PCB.
		replacing the main PCB?

IV-23