Kyocera TASKalfa 3050ci Service Manual page 302

Code Contents
7224 Broken LSU thermistor Y
wire
The sensor input sampling is
greater than 255.
7231 Short-circuited LSU therm-
istor K
The sensor input sampling is
less than 0.
7232 Short-circuited LSU therm-
istor C
The sensor input sampling is
less than 0.
7233 Short-circuited LSU therm-
istor M
The sensor input sampling is
less than 0.
Causes
Defective connec- Reinsert the connector. Also check for conti-
tor cable or poor nuity within the connector cable. If none,
contact in the con- replace the cable.
nector. Laser scanner unit and LSU relay PWB
(YC12)
LSU relay PWB (YC3) and engine PWB
(YC12)
Defective LSU Replace the laser scanner unit (see page 1-
thermistor Y. 5-25).
Defective engine Replace the engine PWB and check for cor-
PWB. rect operation (see page 1-5-54).
Defective connec- Reinsert the connector. Also check for conti-
tor cable or poor nuity within the connector cable. If none,
contact in the con- replace the cable.
nector. Laser scanner unit and LSU relay PWB
(YC5)
LSU relay PWB (YC3) and engine PWB
(YC12)
Defective LSU Replace the laser scanner unit (see page 1-
thermistor K. 5-25).
Defective engine Replace the engine PWB and check for cor-
PWB. rect operation (see page 1-5-54).
Defective connec- Reinsert the connector. Also check for conti-
tor cable or poor nuity within the connector cable. If none,
contact in the con- replace the cable.
nector. Laser scanner unit and LSU relay PWB
(YC10)
LSU relay PWB (YC3) and engine PWB
(YC12)
Defective LSU Replace the laser scanner unit (see page 1-
thermistor C. 5-25).
Defective engine Replace the engine PWB and check for cor-
PWB. rect operation (see page 1-5-54).
Defective connec- Reinsert the connector. Also check for conti-
tor cable or poor nuity within the connector cable. If none,
contact in the con- replace the cable.
nector. Laser scanner unit and LSU relay PWB
(YC8)
LSU relay PWB (YC3) and engine PWB
(YC12)
Defective LSU Replace the laser scanner unit (see page 1-
thermistor M. 5-25).
Defective engine Replace the engine PWB and check for cor-
PWB. rect operation (see page 1-5-54).
1-4-62
2LK/2LN/2LM/2LC
Check procedures/
corrective measures