2MN/2N1
1-4-63
7232 Short-circuited LSU therm-
istor C
The sensor input sampling is
less than 69.
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 and LSU relay PWB
(YC10)
LSU relay PWB (YC3) and engine PWB
(YC12)
Defective LSU
thermistor 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).
7233 Short-circuited LSU therm-
istor M
The sensor input sampling is
less than 69.
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 and LSU relay PWB
(YC8)
LSU relay PWB (YC3) and engine PWB
(YC12)
Defective LSU
thermistor 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).
7234 Short-circuited LSU therm-
istor Y
The sensor input sampling is
less than 69.
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 and LSU relay PWB
(YC12)
LSU relay PWB (YC3) and engine PWB
(YC12)
Defective LSU
thermistor 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).
7241 Broken developer thermis-
tor K wire
The sensor input sampling is
greater than 230.
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.
Developer unit K and front PWB (YC9)
Front PWB (YC2) and engine PWB (YC10)
Defective devel-
oper thermistor K.
Replace developer unit K (see page 1-5-29).
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