Specifications
4-18
<Duplex Turnover/Take-Up Misfeed (Duplex Unit) Troubleshooting Procedure>
Symptom Step Check Item Result Action
1
Is the Paper Exit Roller
deformed, worn, or dirty with
paper dust?
YES
Clean or change the Paper
Exit Roller.
2
Is PC3 fully operational?
Check the input data using I/O
Check.
NO
Check the PC3 actuator for
operation and, if it is intact,
change PC3.
YES
Check gears for proper
engagement.
3
Check M1 for operation.
Does the voltage across
PJ1A-7 on PWB-A (Duplex
Unit) and GND change from
DC5V to DC0V during a 2-
sided copy cycle?
NO Change PWB-A.
YES
Check various parts for
possible overload and, if they
are okay, change M1 or PWB-
A (Duplex Unit).
Paper is at a
stop near the
exit section.
4
Does the voltage across
PJ1A-5 on PWB-A (Duplex
Unit) and GND change from
DC5V to DC0V during a 2-
sided copy cycle?
NO Change PWB-A.
1
Is the Duplex Unit Transport
Roller or Roll deformed, worn,
or dirty with paper dust?
YES
Clean or change the Duplex
Unit Transport Roller or Roll.
2
Is a torn piece of paper
present on the paper path
surface?
YES
Remove the torn piece of
paper.
3
Is the Manual Feed Take-Up
Roller or Roll deformed, worn,
or dirty with paper dust?
YES
Clean or change the Manual
Feed Take-Up Roller or Roll.
YES
Check gears for proper
engagement.
4
Check M2 for operation.
Does the voltage across
PJ1A-3 on PWB-A (Duplex
Unit) and GND change from
DC5V to DC0V during a 2-
sided copy cycle?
NO Change PWB-A.
5
Is PI1 fully operational?
Check the input data using I/O
Check.
NO
Check the PI1 actuator for
operation and, if it is intact,
change PWB-A (Duplex Unit).
YES
Check various parts for
possible overload and, if they
are okay, change CL3 or M2.
Paper is at a
stop inside the
Duplex Unit.
6
Check CL3 for operation.
Does the voltage across
CN14-2 and GND change
from DC24V to DC0V when
paper is taken up from the
Duplex Unit?
NO Change PWB-A.
YES
Check various parts for
possible overload and, if they
are okay, change PWB-A.
Paper is at a
stop near the
Synchronizing
Rollers.
1
Is PC2 fully operational?
Check the input data using I/O
Check.
NO
Check the PC2 actuator for
operation and, if it is intact,
change PC2.