2MN/2N1-1
1-4-55
6600 Fuser belt rotation error
A belt rotating pulse is not
received for 1 s.
(Engine CPU)
Defective connec-
tor cable or poor
contact in the con-
nector.
Reinsert the connector. Also check for conti-
nuity within the connector cable. If none,
replace the cable.
Fuser unit and engine PWB (YC26)
Defective fuser belt
sensor.
Replace the fuser unit (see page 1-5-40).
Defective engine
PWB.
Replace the engine PWB and check for cor-
rect operation (see page 1-5-49).
6610 Fuser release motor error
When the fuser release motor
is driven, the fuser release
sensor does not turn on/off for
5 s.
Defective connec-
tor cable or poor
contact in the con-
nector.
Reinsert the connector. Also check for conti-
nuity within the connector cable. If none,
replace the cable.
Fuser unit and engine PWB (YC26)
Defective drive
transmission sys-
tem of motor.
Check if the gears rotate smoothly. If not,
grease the bushes and gears. Check for
broken gears and replace if any.
Defective fuser
release motor.
Replace the fuser unit (see page 1-5-40).
Defective engine
PWB.
Replace the engine PWB and check for cor-
rect operation (see page 1-5-49).
6710 Fuser IH PWB CPU reset
error
Watch doc timer has been
overflowed.
Defective connec-
tor cable or poor
contact in the con-
nector.
Reinsert the connector. Also check for conti-
nuity within the connector cable. If none,
replace the cable.
Fuser IH PWB (YC4) and engine PWB
(YC26)
Defective fuser IH
PWB.
Replace the fuser IH PWB and check for
correct operation.
Defective engine
PWB.
Replace the engine PWB and check for cor-
rect operation (see page 1-5-49).
6720 Fuser IH belt rotation error
A belt rotating pulse is not
received for 2 s.
Defective connec-
tor cable or poor
contact in the con-
nector.
Reinsert the connector. Also check for conti-
nuity within the connector cable. If none,
replace the cable.
Fuser unit and engine PWB (YC26)
Defective fuser belt
sensor.
Replace the fuser unit (see page 1-5-40).
Defective fuser IH
PWB.
Replace the fuser IH PWB and check for
correct operation.
Defective engine
PWB.
Replace the engine PWB and check for cor-
rect operation (see page 1-5-49).
Code Contents Causes
Check procedures/
corrective measures