Konica Minolta magicolor 7450, Руководство по обслуживанию

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Field Service Ver. 1.0 May 2006 13. Jam Display
181
magicolor 7450
T
roubleshooting
13.4.4 Misfeed at Duplex transport section (Duplex Option)
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 lapse of a
given period of time after the paper has blocked the Duplex Unit Transport Sensor
1 (PC1).
The Duplex Unit Transport Sensor 1 (PC1) 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 (PC2) is not unblocked even after the lapse
of a given period of time after it has been blocked by the paper.
Detection of paper
left in Duplex
Transport Section Duplex Unit Transport Sensor 1 (PC1) or Duplex Unit Transport Sensor 2 (PC2) is
blocked when the Main Power Switch is turned ON, a door or cover is opened and
closed, or a misfeed or malfunction is reset.
Relevant Electrical Parts
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 (Electri-
cal Component)
1 Initial check items — —
2 PC1 I/O check, Sensor check — U-18
3 PC2 I/O check, Sensor check — U-18
4 M1 operation check PWB-A PJ4A DU-1 to 4 V-19
5 M2 operation check PWB-A PJ5A DU-1 to 4 V-19
6 Change PWB-A — —
7 Change PWB-M — —