Konica Minolta magicolor 7450, Руководство по обслуживанию

Страница: 344 / 346

Field Service Ver. 1.0 May 2006 6. Jam Display
13
Dup
l
ex
Opt
i
on
T
roubleshooting
6.3.3 Duplex Unit transport section misfeed
A. Detection timing
B. Action
Type Description
Detection of
misfeed at Duplex
Transport section
The Duplex Unit Transport Sensor 2 (PC2) is not blocked even after the set period
of time has elapsed after the Duplex Unit Transport Sensor 1 (PC1) is blocked by
the paper.
The Duplex Unit Transport Sensor 1 (PC1) is not unblocked even after the set
period of time has elapsed after the Duplex Unit Transport Sensor 1 (PC1) is
blocked by the paper.
The Duplex Unit Transport Sensor 2 (PC2) is not unblocked even after the set
period of time has elapsed after the Duplex Unit Transport Sensor 2 (PC2) is
blocked by the paper.
Detection of paper
remaining in the
Duplex Unit
transport section The Duplex Unit Transport Sensor 1 (PC1) or Duplex Unit Transport Sensor 2
(PC2) are blocked when the Main Power Switch is set to ON, a door or cover is
opened and closed, or a misfeed or malfunction is reset.
Relevant electrical parts
Registration Roller Sensor (PC1)
Duplex Unit Transport Sensor 1 (PC1)
Duplex Unit Transport Sensor 2 (PC2)
Duplex Unit Switchback Motor (M1)
Duplex Unit Transport Motor (M2) Duplex Control Board (PWB-A)
Mechanical Control Board (PWB-M)
Step Action
WIRING DIAGRAM
Control signal
Location
(Electrical
components)
1 Initial check items — —
2 PC1 I/O, sensor check PWB-M CNSEN-3 (ON) C-4
3 PC1 I/O, sensor check — U-18
4 PC2 I/O, sensor check — U-18
5 M1 operation check PWB-A PJ4A-1 to 4 V-19
6 M2 operation check PWB-A PJ5A-1 to 4 V-19
7 PWB-A replacement — —
8 PWB-M replacement — —