Kyocera TASKalfa 620 Service Manual page 209

Problem
(32) 1. Broken developing fan
Developing fan motor
1 or 2 does not oper-
2. Poor contact in develop-
ate.
3. Defective developing fan
4. Defective developing fan
5. Defective fan motors
6. Defective engine PWB.
(33) 1. Broken image formation
The image formation
fan motor does not
2. Poor contact in image
operate.
3. Defective image forma-
4. Defective engine PWB.
(34) 1. Broken developing duct
The developing duct
fan motor does not
2. Poor contact in develop-
operate.
3. Defective developing
4. Defective engine PWB.
Causes
motor 1 or 2 coil.
ing fan motor 1 or 2 con-
nector terminals.
motor 1.
motor 2.
drive PWB.
fan motor coil.
formation fan motor con-
nector terminals.
tion fan motor.
fan motor coil.
ing duct fan motor con-
nector terminals.
duct fan motor.
Check procedures/corrective measures
Check for continuity across the coil. If none, replace developing
fan motor 1 or 2.
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 developing fan motor 1
operates when YC2-9 on the fan motors drive PWB outputs 24 V.
If not, replace developing fan motor 1.
Run maintenance item U037 and check if developing fan motor 2
operates when YC2-11 on the fan motors drive PWB outputs 24 V.
If not, replace developing fan motor 2.
Run maintenance item U037 and check if YC2-9 or YC2-11 on the
fan motors drive PWB outputs 24 V. If not, replace the fan motors
drive PWB.
Run maintenance item U037 and check if YC13-3 on the engine
PWB outputs 24 V. If not, replace the engine PWB.
Check for continuity across the coil. If none, replace the image for-
mation 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 image formation fan
motor operates when YC5-1 on the engine PWB outputs 24 V. If
not, replace the image formation fan motor.
Run maintenance item U037 and check if YC5-1 on the engine
PWB outputs 24 V. If not, replace the engine PWB.
Check for continuity across the coil. If none, replace the develop-
ing duct 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 developing duct fan
motor operates when YC5-2 on the engine PWB outputs 24 V. If
not, replace the developing duct fan motor.
Run maintenance item U037 and check if YC5-2 on the engine
PWB outputs 24 V. If not, replace the engine PWB.
2KN/2KP
1-4-65