Others - Kyocera KM-4230 Service Manual

Problem
(4) Broken switchback
The feedshift solenoid
switchback coil.
feedshift
Poor contact in the
solenoid does
switchback
not operate.
feedshift solenoid
connector termi-
nals.
Defective engine
PCB.
(5) Broken duplex
The duplex paper tapping so-
paper tapping lenoid coil.
solenoid does
Poor contact in the
not operate.
duplex paper tap-
ping solenoid con-
nector terminals.
Defective engine
PCB.
(6) Poor contact in
The message safety switch 2
requesting connector termi-
covers to be nals.
closed is dis-
Defective safety
played when
switch 2.
the left cover
is closed.
(7) Wiring is broken,

Others.

shorted or makes
poor contact.
Noise.
Causes Check procedures/corrective measures
Check for continuity across the coil. If none,
replace the switchback feedshift solenoid.
Reinsert the connector. Also check for
continuity within the connector cable. If
none, remedy or replace the cable.
Run maintenance item U033 and check if
CN10-10 on the engine PCB goes low. If
not, replace the engine PCB.
Check for continuity across the coil. If none,
replace the duplex paper tapping solenoid.
Reinsert the connector. Also check for
continuity within the connector cable. If
none, remedy or replace the cable.
Run maintenance item U033 and check if
CN10-14 on the engine PCB goes low. If
not, replace the engine PCB.
Reinsert the connector. Also check for
continuity within the connector cable. If
none, remedy or replace the cable.
Check for continuity across the contacts. If
there is no continuity when safety switch 2 is
on, replace it.
Check for continuity. If none, repair.
Locate the source of noise and remove.
2A3/4
3-6-93