Minolta EP1080 Service Manual page 263

Symptom Step
•
Paper is
stationary near
the Vertical
5
Transport Section.
6
7
8
Check Item
Is Vertical Transport Drive
Motor M21 turning when a
copy is taken up and fed
into the copier from the
Duplex Unit?
Are the Vertical Transport
Rollers and Guide Plate
deformed, worn, or dirty
with paper dust?
Slide out the Duplex Unit
and remove the PWB
Cover. Then, slide the
Duplex Unit back into the
copier. Does the voltage
across PJ2G-9 on PWB-G
and GND change from
DC5V to DC0V when
Duplex Unit Paper Take-Up
Sensor PC16 is blocked by
a sheet of paper in the
above condition?
Does the voltage across
PJ9AA-9 on PWB-A
(PF-201) and GND change
from DC5V to DC0V when
Vertical Transport Detection
Sensor 3 PC17 is blocked
by a sheet of paper?
(For PF-1D, check the
voltage across PJ6A-6 and
GND.)
T-31
Result Action
YES Check for possible overload.
Check the Duplex Unit drive
coupling, or replace PWB-A
NO
(PF-201) (PF-1D), PWB-G,
and/or M21.
Clean or replace the
Vertical Transport Rollers
YES
and Guide Plate.
Check the Actuator for
operation.
Check PC16.
NO
Replace PWB-G or PWB-A
(PF-201) (PF-1D).
YES
Check the Actuator for
operation.
NO
Check PC17.