Royal Copystar Ri 4230, Service Manual

Page: 538 / 602

2A3/4
3-6-93
(4)
The
switchback
feedshift
solenoid does
not operate.
(5)
The duplex
paper tapping
solenoid does
not operate.
(6)
The message
requesting
covers to be
closed is dis-
played when
the left cover
is closed.
(7)
Others.
Broken switchback
feedshift solenoid
coil.
Poor contact in the
switchback
feedshift solenoid
connector termi-
nals.
Defective engine
PCB.
Broken duplex
paper tapping so-
lenoid coil.
Poor contact in the
duplex paper tap-
ping solenoid con-
nector terminals.
Defective engine
PCB.
Poor contact in
safety switch 2
connector termi-
nals.
Defective safety
switch 2.
Wiring is broken,
shorted or makes
poor contact.
Noise.
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.
Problem Causes Check procedures/corrective measures