Duplex Transport Misfeed - Konica Minolta bizhub C450 Service Manual

15. Jam Display
15.3.7

Duplex Transport Misfeed

A. Detection Timing
Type
The Registration Roller Sensor (PC28) is not blocked even after the lapse of a
given period of time after a Duplex paper take-up sequence has been started.
The Duplex Unit Transport Sensor 2 (PC1-DU) is not blocked even after the lapse
of a given period of time after the paper has blocked the Duplex Unit Transport
Misfeed detected at
Sensor 1 (PI1-DU).
Duplex Transport
Section
The Duplex Unit Transport Sensor 1 (PI1-DU) is not unblocked even after the
lapse of a given period of time after it has been blocked by the paper.
The Duplex Unit Transport Sensor 2 (PC1-DU) is not unblocked even after the
lapse of a given period of time after it has been blocked by the paper.
Duplex Unit Transport Sensor 1 (PI1-DU) or Duplex Unit Transport Sensor 2
Paper left at Duplex
(PC1-DU) is blocked when the Main Power Switch is turned ON, a door or cover is
Transport Section
opened and closed, or a misfeed or malfunction is reset.
B. Action
Registration Roller Sensor (PC28)
Duplex Unit Transport Sensor 1 (PI1-DU)
Duplex Unit Transport Sensor 2 (PC1-DU)
Switchback Motor (M1-DU)
Duplex Unit Transport Motor (M2-DU)
Step
1 Initial check items
2 PC28 I/O check, Sensor check
3 PI1-DU I/O check, Sensor check
4 PC1-DU I/O check, Sensor check
5 M1-DU operation check
6 M2-DU operation check
7 Change PWB-A DU
8 Change PWB-MC
316
Relevant Electrical Parts
Duplex Control Board (PWB-A DU)
Control Board (PWB-MC)
Action
Field Service Ver. 1.0 Mar. 2005
Description
WIRING DIAGRAM
Control Signal
—
PWB-Z PJ6Z-11 (ON)
—
—
PWB-A DU PJ3A-1 to 4
PWB-A DU PJ2A-1 to 4
—
—
Location
(Electrical
Component)
—
T to U-27
Duplex Unit
E-6
Duplex Unit
C-6
Duplex Unit
C-5
Duplex Unit
C-5
—
—