2MV-F
1-4-21
4001 Polygon motor (K) steady-
state error
The rated speed signal
detected the stability OFF
continuously for 1 s after the
polygon motor (K) stabilizes.
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.
Laser scanner unit (K) and LSU connect
PWB(YC5)
LSU connect PWB and engine PWB (YC12)
Defective motor. Replace the Laser scanner unit (K)
(see page 1-5-21).
Defective PWB. Replace the engine PWB or LSU connect
PWB and check for correct operation
(see page 1-5-45).
4002 Polygon motor (C) steady-
state error
The rated speed signal
detected the stability OFF
continuously for 1 s after the
polygon motor (C) stabilizes.
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.
Laser scanner unit (C) and LSU connect
PWB(YC7)
LSU connect PWB and engine PWB (YC12)
Defective motor. Replace the Laser scanner unit (C)
(see page 1-5-21).
Defective PWB. Replace the engine PWB or LSU connect
PWB and check for correct operation
(see page 1-5-45).
4003 Polygon motor (M) steady-
state error
The rated speed signal
detected the stability OFF
continuously for 1 s after the
polygon motor (M) stabilizes.
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.
Laser scanner unit (M) and LSU connect
PWB(YC6)
LSU connect PWB and engine PWB (YC12)
Defective motor. Replace the Laser scanner unit (M)
(see page 1-5-21).
Defective PWB. Replace the engine PWB or LSU connect
PWB and check for correct operation
(see page 1-5-45).
4004 Polygon motor (Y) steady-
state error
The rated speed signal
detected the stability OFF
continuously for 1 s after the
polygon motor (Y) stabilizes.
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.
Laser scanner unit (Y) and LSU connect
PWB(YC8)
LSU connect PWB and engine PWB (YC12)
Defective motor. Replace the Laser scanner unit (Y)
(see page 1-5-21).
Defective PWB. Replace the engine PWB or LSU connect
PWB and check for correct operation
(see page 1-5-45).
Code Contents Causes
Check procedures/
corrective measures
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