Kyocera FS-C8500DN Service Manual page 218

2KA
Problem
(12)
The MP solenoid
does not operate.
(13)
The LSU cleaning
solenoid does not
operate.
(14)
Main charging is not
performed.
(15)
Defective developing
bias output.
(16)
Defective transfer
bias output.
1-4-64
Causes
1. Broken solenoid coil.
2. Poor contact in the con-
nector terminals.
3. Defective engine PWB.
1. Broken solenoid coil.
2. Poor contact in the con-
nector terminals.
3. Defective feed PWB.
4. Defective engine PWB.
1. Defective drum unit.
2. The connector terminals
of the main high voltage
PWB make poor contact.
3. Defective engine PWB.
4. Defective main high volt-
age PWB.
1. The connector terminals
of the main high voltage
PWB make poor contact.
2. The connector terminals
of the high voltage con-
trol PWB make poor con-
tact.
3. Defective engine PWB.
4. Defective high voltage
control PWB.
5. Defective main high volt-
age PWB.
1. The connector terminals
of the transfer high volt-
age PWB 1 make poor
contact.
2. Defective engine PWB.
3. Defective transfer high
voltage PWB 1.
4. Defective transfer belt
unit.
Check procedures/corrective measures
Check for continuity across the coil. If none, replace the MP sole-
noid.
Reinsert the connector. Also check for continuity within the con-
nector cable. If none, remedy or replace the cable.
Run maintenance item U033 and check if the solenoid operates. If
not, replace the engine PWB.
Check for continuity across the coil. If none, replace the LSU
cleaning solenoid.
Reinsert the connector. Also check for continuity within the con-
nector cable. If none, remedy or replace the cable.
Run maintenance item U474 and check if the solenoid operates. If
not, replace the feed PWB.
Run maintenance item U474 and check if the solenoid operates. If
not, replace the engine PWB.
Replace the drum unit (see page 1-5-26).
Reinsert the connector. Also check for continuity within the con-
nector cable. If none, remedy or replace the cable.
Replace the engine PWB.
Replace the main high voltage PWB.
Reinsert the connector. Also check for continuity within the con-
nector cable. If none, remedy or replace the cable.
Reinsert the connector. Also check for continuity within the con-
nector cable. If none, remedy or replace the cable.
Replace the engine PWB.
Replace the high voltage control PWB.
Replace the main high voltage PWB.
Reinsert the connector. Also check for continuity within the con-
nector cable. If none, remedy or replace the cable.
Replace the engine PWB.
Replace the transfer high voltage PWB 1.
Replace the transfer belt unit (see page 1-5-28).