Kyocera KM-4230 Service Manual page 521

2A3/4
Problem
(10)
Paper feed
motor does
not operate
(C230).
(11)
The paper
conveying
motor does
not operate
(C210).
(12)
The toner
recycle motor
does not
operate.
3-6-76
Causes
Broken paper feed
motor coil.
Poor contact in the
paper feed motor
connector
terminals.
Defective paper
feed motor.
Defective main
PCB.
Broken paper
conveying motor
coil.
Poor contact in the
paper conveying
motor connector
terminals.
Defective paper
feed motor.
Defective main
PCB.
Broken toner
recycle motor coil.
Poor contact in the
toner recycle
motor connector
terminals.
Defective engine
PCB.
Check procedures/corrective measures
Check for continuity across the coil. If none,
replace the paper feed motor.
Reinsert the connector. Also check for
continuity within the connector cable. If
none, remedy or replace the cable.
Check if the paper feed motor rotates when
CN11-3 on the engine PCB goes low while
maintenance item U030 is run. If not replace
the paper feed motor.
Run maintenance item U030 and check if
CN1-87 on the main PCB goes low. If not,
replace the main PCB.
Check for continuity across the coil. If none,
replace the paper conveying motor.
Reinsert the connector. Also check for
continuity within the connector cable. If
none, remedy or replace the cable.
Check if the paper feed motor rotates when
CN5-A8 on the engine PCB goes low while
maintenance item U030 is run. If not,
replace the paper conveying motor.
Run maintenance item U030 and check if
CN1-111 on the main PCB goes low. If not,
replace the main PCB.
Check for continuity across the coil. If none,
replace the toner recycle motor.
Reinsert the connector. Also check for
continuity within the connector cable. If
none, remedy or replace the cable.
Run maintenance item U135 and check if
drive pulse signal is output across CN2-A7
and CN2-A8 on the engine PCB. If not,
replace the engine PCB.