Kyocera KM-4230 Service Manual page 524

Problem
(20) Broken feed clutch
Feed clutch 4 4 coil.
does not
Poor contact in
operate.
feed clutch 4 con-
nector terminals.
Defective engine
PCB.
(21)
Broken feed clutch
Feed clutch 5
5 coil.
does not
Poor contact in
operate.
feed clutch 5
connector
terminals.
Defective engine
PCB.
(22) Broken registration
The registra- clutch coil.
tion clutch
Poor contact in the
does not
registration clutch
operate.
connector termi-
nals.
Defective engine
PCB.
(23) Broken bypass
The bypass paper feed clutch
paper feed coil.
clutch does
Poor contact in the
not operate.
bypass paper feed
clutch connector
terminals.
Defective engine
PCB.
Causes Check procedures/corrective measures
Check for continuity across the coil. If none,
replace feed clutch 4.
Reinsert the connector. Also check for
continuity within the connector cable. If
none, remedy or replace the cable.
Run maintenance item U032 and check if
CN8-B9 on the engine PCB goes low. If not,
replace the engine PCB.
Check for continuity across the coil. If none,
replace feed clutch 5.
Reinsert the connector. Also check for
continuity within the connector cable. If
none, remedy or replace the cable.
Run maintenance item U032 and check if
CN12-A2 on the engine PCB goes low. If
not, replace the engine PCB.
Check for continuity across the coil. If none,
replace the registration clutch.
Reinsert the connector. Also check for
continuity within the connector cable. If
none, remedy or replace the cable.
Run maintenance item U032 and check if
CN8-B11 on the engine PCB goes low. If
not, replace the engine PCB.
Check for continuity across the coil. If none,
replace the bypass paper feed clutch.
Reinsert the connector. Also check for
continuity within the connector cable. If
none, remedy or replace the cable.
Run maintenance item U032 and check if
CN14-A7 on the engine PCB goes low. If
not, replace the engine PCB.
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