Konica Minolta Bizhub C350 Service Manual page 509

bizhub C350 Field Service Ver.1.0 Mar. 2004
1.4 Solution
1.4.1 Duplex Unit transport section misfeed
A. Detection timing
Type
The Synchronizing Roller Sensor(PC28) is not blocked even after the lapse of a
given period of time after the Duplex Paper Take-up sequence started.
The Duplex Unit Transport Sensor 2 (PC1-DU) is not blocked even after the set
period of time has elapsed after the Duplex Unit Transport Sensor 1 (PI1-DU) is
Duplex Unit trans-
blocked by the paper.
port
The Duplex Unit Transport Sensor 1 (PI1-DU) is not unblocked even after the set
section misfeed
period of time has elapsed after the Duplex Unit Transport Sensor 1 (PI1-DU) is
detection
blocked by the paper.
The Duplex Unit Transport Sensor 2 (PC1-DU) is not unblocked even after the set
period of time has elapsed after the Duplex Unit Transport Sensor 2 (PC1-DU) is
blocked by the paper.
Detection of paper
The Duplex Unit Transport Sensor 1 (PI1-DU) or Duplex Unit Transport Sensor 2
remaining in the
(PC1-DU) are blocked when the Power Switch is set to ON, a door or cover is
Duplex Unit trans-
opened and closed, or a misfeed or malfunction is reset.
port section
B. Action
Synchronizing 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, sensor check
3 PI1-DU I/O, sensor check
4 PC1-DU I/O, sensor check
5 M1-DU operation check
6 M2-DU operation check
7 PWB-A DU replacement
8 PWB-MC replacement
Relevant electrical parts
Action
4-3
Description
Duplex Control Board (PWB-A DU)
Control Board (PWB-MC)
WIRING DIAGRAM
Control signal
-
PWB-MC PJ12MC-6
PWB-A DU PJ1A DU-12
PWB-A DU PJ4A DU-3
-
-
-
-
Jam Display
Location
(Electrical compo-
nents)
-
R-2
H-4
C-2
D-8
H-2
F-5
-