Kyocera 300ci Service Manual page 288

2JZ/2JX/2JV/2H7-1
Problem
(5)
Developing fan motor
1/2 does not operate.
(6)
Fuser fan motor,
developing fan motor
5, power source fan
motor 1/2, LSU fan
motor or transfer fan
motor 1/2/3 does not
operate.
1-4-70
Causes
1. Broken fan motor coil.
2. Poor contact in the con-
nector terminals.
3. Defective fan motor.
4. Defective sub front PWB. Run maintenance item U037 and check if following terminals on
5. Defective engine PWB.
1. Broken fan motor coil.
2. Poor contact in the con-
nector terminals.
3. Defective fan motor.
4. Defective engine PWB.
Check procedures/corrective measures
Check for continuity across the coil. If none, replace the fan motor.
Reinsert the connector. Also check for continuity within the con-
nector cable. If none, remedy or replace the cable.
Run maintenance item U037 and check if the fan motor operates
when the following terminals on the PWB goes low. If not, replace
the corresponding fan motor.
Developing fan motor 1: YC9-1 on the sub front PWB
Developing fan motor 2: YC9-3 on the sub front PWB
the sub front PWB goes low. If not, replace the sub front PWB.
Developing fan motor 1: YC9-1 on the sub front PWB
Developing fan motor 2: YC9-3 on the sub front PWB
Run maintenance item U037 and check if following terminals on
the engine PWB goes low. If not, replace the engine PWB.
Developing fan motor 1: YC19-17 on the engine PWB
Developing fan motor 2: YC19-16 on the engine PWB
Check for continuity across the coil. If none, replace the fan motor.
Reinsert the connector. Also check for continuity within the con-
nector cable. If none, remedy or replace the cable.
Run maintenance item U037 and check if the fan motor operates
when the following terminals on the PWB goes low. If not, replace
the corresponding fan motor.
Fuser fan motor: YC25-B11 on the engine PWB
Developing fan motor 5: YC39-2 on the engine PWB
Power source fan motor 1/2: YC10-B15 on the engine PWB
LSU fan motor: YC38-1 on the engine PWB
Transfer fan motor 1: YC12-A7 on the engine PWB
Transfer fan motor 2: YC28-B15 on the engine PWB
Transfer fan motor 3: YC28-B17 on the engine PWB
Run maintenance item U037 and check if following terminals on
the engine PWB goes low. If not, replace the engine PWB.
Fuser fan motor: YC25-B11 on the engine PWB
Developing fan motor 5: YC39-2 on the engine PWB
Power source fan motor 1/2: YC10-B15 on the engine PWB
LSU fan motor: YC38-1 on the engine PWB
Transfer fan motor 1: YC12-A7 on the engine PWB
Transfer fan motor 2: YC28-B15 on the engine PWB
Transfer fan motor 3: YC28-B17 on the engine PWB