Minolta EP1080 Service Manual page 257

Duplex Unit Vertical Transport Misfeed Clearing Procedure
Symptom Step
•
Paper is
stationary near 1
the Exit Section.
2
3
•
Paper is
stationary near
the Vertical
4
Transport Section
of the Duplex Unit.
5
6
•
Paper is
stationary near
the Turnover
7
Section.
8
Check Item
Is the paper curled, waved,
or damp?
Does the voltage across
PJ6A-5 on PWB-A and
GND change from DC24V
to DC0V after the Start Key
has been pressed?
Are the Turnover/Exit
Switching Plate and Upper
and Lower Guide Plates
deformed or dirty?
Is drive being transmitted to
the Vertical Transport Roller
of the Duplex Unit? (Is
Duplex Unit Drive Motor
M31 turning after the Start
Key has been pressed?)
Does the voltage across
PJ8A-8 on PWB-A and
GND change from DC5V to
DC0V when Duplex Vertical
Transport Sensor PC12 is
blocked by a sheet of
paper?
Does the voltage across
PJ3A-10 on PWB-A and
GND change from DC5V to
DC0V when Paper Exit
Sensor PC53 is blocked by
a sheet of paper?
Are the Paddle Roller, Slip
Roller/Rolls, and Rolls B
Release Lever deformed,
worn, or dirty with paper
dust?
Does the voltage across
PJ5A-5 on PWB-A (PF-201)
and GND change from
DC5V to DC0V when
Duplex Unit Turnover Path
Sensor PC13 is blocked by
a sheet of paper?
(For PF-1D, check the
voltage across PJ4A-5 and
GND.)
Continued on next page
T-25
Result Action
Change the paper.
YES Instruct the user in how to
store the paper.
Adjust the stroke of the
YES Solenoid or check the
Solenoid.
Replace PWB-A.
NO
Clean or replace the Plates.
YES
YES Check for possible overload.
Check the Duplex Unit drive
coupling or replace PWB-A
NO
(PF-201) (PF-1D), PWB-G,
and/or M31.
Check the Actuator for
operation.
Check PC12.
NO
Replace PWB-A.
YES
Check the Actuator for
operation.
NO
Check PC53.
Clean or replace the Roller
and/or Roll.
YES
Check the Release Lever
mechanism.
Check the drive coupling
NO
from the Duplex Unit.
Replace PWB-A (PF-201)
(PF-1D).
YES
Check the Actuator for
operation and PC13.
NO