Kyocera ECOSYS FS-C8650DN Service Manual

2MN/2N1
1-4-46
4002 Polygon motor C synchroni-
zation error
After polygon motor C is
driven, the ready signal does
not turn to L within 30 s.
The polygon motor speed
won’t stabilize within 10 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.
Polygon motor C and LSU relay PWB (YC9)
LSU relay PWB (YC3) and engine PWB
(YC12)
Defective polygon
motor C.
Replace the laser scanner unit (see page 1-
5-17).
Defective engine
PWB.
Replace the engine PWB and check for cor-
rect operation (see page 1-5-49).
4003 Polygon motor M synchro-
nization error
After polygon motor M is
driven, the ready signal does
not turn to L within 30 s.
The polygon motor speed
won’t stabilize within 10 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.
Polygon motor M and LSU relay PWB (YC7)
LSU relay PWB (YC3) and engine PWB
(YC12)
Defective polygon
motor M.
Replace the laser scanner unit (see page 1-
5-17).
Defective engine
PWB.
Replace the engine PWB and check for cor-
rect operation (see page 1-5-49).
4004 Polygon motor Y synchroni-
zation error
After polygon motor Y is
driven, the ready signal does
not turn to L within 30 s.
The polygon motor speed
won’t stabilize within 10 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.
Polygon motor Y and LSU relay PWB
(YC11)
LSU relay PWB (YC3) and engine PWB
(YC12)
Defective polygon
motor Y.
Replace the laser scanner unit (see page 1-
5-17).
Defective engine
PWB.
Replace the engine PWB and check for cor-
rect operation (see page 1-5-49).
4011 Polygon motor K steady-
state error
After polygon motor K is stabi-
lized, the ready signal is at the
H level for 15 s continuously.
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.
Polygon motor K and LSU relay PWB (YC4)
LSU relay PWB (YC4) and engine PWB
(YC12)
Defective polygon
motor K.
Replace the laser scanner unit (see page 1-
5-17).
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

Kyocera ECOSYS FS-C8650DN Specifications

General

Brand	Kyocera
Model	ECOSYS FS-C8650DN
Category	Printer
Language	English