Kyocera TASKalfa 3050ci Service Manual page 303

Code Contents
7234 Short-circuited LSU therm-
istor Y
The sensor input sampling is
less than 0.
7241 Broken developer thermis-
tor K wire
The sensor input sampling is
greater than 255.
7242 Broken developer thermis-
tor C wire
The sensor input sampling is
greater than 255.
7243 Broken developer thermis-
tor M wire
The sensor input sampling is
greater than 255.
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. Developer unit K and front PWB (YC9)
Front PWB (YC2) and engine PWB (YC10)
Defective devel- Replace developer unit K (see page 1-5-36).
oper thermistor K.
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. Developer unit C and front PWB (YC13)
Front PWB (YC2) and engine PWB (YC10)
Defective devel- Replace developer unit C (see page 1-5-36).
oper thermistor C.
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. Developer unit M and front PWB (YC11)
Front PWB (YC2) and engine PWB (YC10)
Defective devel- Replace developer unit M (see page 1-5-
oper thermistor M. 36).
Defective engine Replace the engine PWB and check for cor-
PWB. rect operation (see page 1-5-54).
1-4-63
2LK/2LN/2LM/2LC
Check procedures/
corrective measures