7-48
Troubleshooting ＞ Electric problems
[CONFIDENTIAL]
19 A paper jam in the
paper feed, paper
conveying or eject
section is
indicated when
the main power
switch is turned
on.
Defective connector cable or
poor contact in the connector.
Reinsert the connector. Also check for continuity within the connector
cable. If none, replace the cable.
Regist sensor 2 and Drum PWB (YC6)
DU sensor 1 and Relay-L PWB (YC9)
PF feed sensor and PF main PWB
Eject full sensor and engine PWB (YC12)
Eject sensor and Engine PWB (YC26)
A piece of paper torn from
paper is caught around
registration sensor, duplex
sensor, PF feed sensor, eject
full sensor or eject sensor.
Check visually and remove it, if any.
Defective sensor. Replace the registration sensor, duplex sensor, PF feed sensor, eject full
sensor or eject sensor.
Defective PWB. Replace the engine PWB and check for correct operation.
20 A message
indicating cover
open is displayed
when the top
cover is closed.
Defective connector cable or
poor contact in the connector.
Reinsert the connector. Also check for continuity within the connector
cable. If none, replace the cable.
Interlock switch and engine PWB (YC6)
Defective interlock switch. Check and replace if necessary.
Defective PWB. Replace the engine PWB and check for correct operation.
21 A message
indicating cover
open is displayed
when the rear
cover is closed.
Defective connector cable or
poor contact in the connector.
Reinsert the connector. Also check for continuity within the connector
cable. If none, replace the cable.
Rear cover switch and relay-L PWB (YC10)
Relay-L PWB and engine PWB (YC2/YC31)
Defective rear cover switch. Check and replace if necessary.
Defective PWB. Replace the engine PWB or the relay-L PWB and check for correct
operation.
Problem Causes Check procedures/corrective measures
To Next Page
Loading...
