Kyocera TASKalfa 620 Service Manual page 207

Problem
(23) 1. Poor contact in the
The duplex side reg-
istration motor does
not operate.
2. Broken duplex side regis-
3. Defective duplex side
4. Defective duplex PWB.
(24) 1. Poor contact in the
The duplex feed
motor does not oper-
ate.
2. Broken duplex feed
3. Defective duplex feed
4. Defective duplex PWB.
(25) 1. Poor contact in the
The duplex switch-
back motor does not
operate.
2. Broken duplex switch-
3. Defective duplex switch-
4. Defective duplex PWB.
(26) 1. Broken cooling fan motor
Cooling fan motor 1
or 2 does not oper-
2. Poor contact in cooling
ate.
3. Defective cooling fan
4. Defective cooling fan
5. Defective fan motors
6. Defective engine PWB.
Causes
duplex side registration
motor connector termi-
nals.
tration motor gear.
registration motor.
duplex feed motor con-
nector terminals.
motor gear.
motor.
duplex switchback motor
connector terminals.
back motor gear.
back motor.
1 or 2 coil.
fan motor 1 or 2 connec-
tor terminals.
motor 1.
motor 2.
drive PWB.
Check procedures/corrective measures
Reinsert the connector. Also check for continuity within the con-
nector cable. If none, remedy or replace the cable.
Check visually and replace the duplex side registration motor if
necessary.
Run maintenance item U030 and check if the duplex side registra-
tion motor operates. If not, replace the duplex side registration
motor.
Run maintenance item U030 and check if the duplex side registra-
tion motor operates. If not, replace the duplex PWB.
Reinsert the connector. Also check for continuity within the con-
nector cable. If none, remedy or replace the cable.
Check visually and replace the duplex feed motor if necessary.
Run maintenance item U030 and check if the duplex feed motor
operates. If not, replace the duplex feed motor.
Run maintenance item U030 and check if the duplex feed motor
operates. If not, replace the duplex PWB.
Reinsert the connector. Also check for continuity within the con-
nector cable. If none, remedy or replace the cable.
Check visually and replace the duplex switchback motor if neces-
sary.
Run maintenance item U030 and check if the duplex switchback
motor operates. If not, replace the duplex switchback motor.
Run maintenance item U030 and check if the duplex switchback
motor operates. If not, replace the duplex PWB.
Check for continuity across the coil. If none, replace cooling 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 amd check if cooline fan motor 1
operates when YC2-1 on the fan motors drive PWB outputs 24 V.
If not, replace cooling fan motor 1.
Run maintenance item U037 and check if cooling fan motor 2
operates when YC2-3 on the fan motors drive PWB outputs 24 V.
If not, replace cooling fan motor 2.
Run maintenance item U037 and check if YC2-1 or YC2-3 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.
2KN/2KP
1-4-63