Kyocera FS-9120DN Service Manual page 107

Problem
(12) Broken cooling fan motor 6
Cooling fan motor 6 coil.
does not operate.
Poor contact in the cooling
fan motor 6 connector ter-
minals.
(13) Broken cooling fan motor 7
Cooling fan motor 7 coil.
does not operate.
Poor contact in the cooling
fan motor 7 connector ter-
minals.
(14) Broken upper paper feed
The upper paper clutch coil.
feed clutch does not
Poor contact in the upper
operate.
paper feed clutch connec-
tor terminals.
Defective engine controller
PWB.
(15) Broken lower paper feed
The lower paper clutch coil.
feed clutch does not
Poor contact in the lower
operate.
paper feed clutch connec-
tor terminals.
Defective engine controller
PWB.
(16) Broken feed clutch 1 coil.
Feed clutch 1 does
not operate.
Poor contact in feed clutch
1 connector terminals.
Defective engine controller
PWB.
(17) Broken feed clutch 2 coil.
Feed clutch 2 does
not operate.
Poor contact in feed clutch
2 connector terminals.
Defective engine controller
PWB.
(18) Broken feed clutch 3 coil.
Feed clutch 3 does
not operate.
Poor contact in feed clutch
3 connector terminals.
Defective engine controller
PWB.
Causes
Check for continuity across the coil. If none, replace cooling fan
motor 6.
Reinsert the connector. Also check for continuity within the con-
nector cable. If none, repair or replace the cable.
Check for continuity across the coil. If none, replace cooling fan
motor 7.
Reinsert the connector. Also check for continuity within the con-
nector cable. If none, repair or replace the cable.
Check for continuity across the coil. If none, replace the upper
paper feed clutch.
Reinsert the connector. Also check for continuity within the con-
nector cable. If none, remedy or replace the cable.
Run maintenance item U032 and check if YC16-B1 on the en-
gine controller PWB goes low. If not, replace the engine control-
ler PWB.
Check for continuity across the coil. If none, replace the lower
paper feed clutch.
Reinsert the connector. Also check for continuity within the con-
nector cable. If none, remedy or replace the cable.
Run maintenance item U032 and check if YC16-B4 on the en-
gine controller PWB goes low. If not, replace the engine control-
ler PWB.
Check for continuity across the coil. If none, replace feed clutch
1.
Reinsert the connector. Also check for continuity within the con-
nector cable. If none, remedy or replace the cable.
Run maintenance item U032 and check if YC11-14 on the en-
gine controller PWB goes low. If not, replace the engine control-
ler PWB.
Check for continuity across the coil. If none, replace feed clutch
2.
Reinsert the connector. Also check for continuity within the con-
nector cable. If none, remedy or replace the cable.
Run maintenance item U032 and check if YC13-A12 on the en-
gine controller PWB goes low. If not, replace the engine control-
ler PWB.
Check for continuity across the coil. If none, replace feed clutch
3.
Reinsert the connector. Also check for continuity within the con-
nector cable. If none, remedy or replace the cable.
Run maintenance item U032 and check if YC13-A5 on the en-
gine controller PWB goes low. If not, replace the engine control-
ler PWB.
Check procedures/corrective measures
FS-9120DN/9520DN
1-5-37