Kyocera KM-4230 Service Manual page 541

2A3/4
Problem
(6)
Paper feed
clutch 2 does
not operate.
(7)
The paper
conveying
clutch does
not operate.
3-6-96
Causes
Defective deck
main PCB.
Wiring problem.
Defective interface
PCB.
Poor contact in the
paper conveying
clutch connector
terminals.
Broken paper
conveying clutch
coil.
Defective deck
main PCB.
Wiring problem.
Defective interface
PCB.
Check procedures/corrective measures
Check if CN4-5 on the deck main PCB goes
low when maintenance item U247 is run. If
not, replace the deck main PCB.
Check for continuity across CN4-5 on the
deck main PCB and CN1-5 on the interface
PCB. If none, check the wiring.
Run maintenance item U247. If paper feed
clutch 2 does not operate while CN4-5 on
the deck main PCB is low, check for
continuity across CN5-3 & CN1-1 and CN5-
4 & CN1-5 on the interface PCB. If none,
replace the interface PCB.
Reinsert the connector. Also check for
continuity within the connector cable. If
none, remedy or replace the cable.
Check for continuity across the coil. If none,
replace the paper conveying clutch.
Check if CN4-6 on the deck main PCB goes
low when maintenance item U247 is run. If
not, replace the deck main PCB.
Check for continuity across CN4-6 on the
deck main PCB and CN1-6 on the interface
PCB. If none, check the wiring.
Run maintenance item U247. If the paper
conveying clutch does not operate while
CN4-6 on the deck main PCB is low, check
for continuity across CN5-1 & CN1-1 and
across CN5-2 & CN1-6 on the interface
PCB. If none, replace the interface PCB.