6. Jam Display
Field Service Ver. 1.0 May 2006
34
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roubleshooting
6.3.2
Misfeed at Tray 3 to 5 feed, Tray 3 to 5 vertical transport section
A. Detection Timing
B. Action
Type
Description
Detection of
misfeed at Tray 3 to
5 feed section
The leading edge of the paper does not block the Vertical Transport Sensor (PC8)
even after the lapse of a given period of time after the Paper Feed Motor (M1) has
been energized.
Detection of
misfeed at Tray 3 to
5 vertical transport
section
The Registration Roller Sensor (PC1) is not blocked even after the lapse of a
given period of time after the paper has blocked the Vertical Transport Sensor
(PC8).
Vertical Transport Sensor (PC8) does not transmit the paper even after the lapse
of a given period of time after the paper has blocked PC8.
Tray 3 to 5 Vertical
Transport section
Loop Registration
Reversing JAM
Rise timing of load for registration is earlier than the one for making the loop at
front of the Registration Roller at feed.
Detection of paper
left in Tray 3 to 5
Vertical Transport Sensor (PC8) 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.
Paper Take-Up Sensor (PC9) 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
Paper Take-Up Sensor (PC9)
Vertical Transport Sensor (PC8)
Registration Roller Sensor (PC1)
Paper Feed Motor (M1)
Control Board (PWB-Z)
Mechanical Control Board (PWB-M)
Step
Action
WIRING DIAGRAM
Control Signal
Location
(Electrical Com-
ponent)
1
Initial check items
—
—
2
PC9 I/O check, Sensor check
PWB-Z PC PJ6Z PC-8 (ON)
V-22
3
PC8 I/O check, Sensor check
PWB-Z PC PJ6Z PC-11 (ON)
V-22
4
PC1 I/O check, Sensor check
PWB-M CNSEN-3 (ON)
C-3 to 4
5
M1 operation check
PWB-Z PC PJ5Z PC-1 to 4
Q-22
6
Change PWB-Z
—
—
7
Change PWB-M
—
—
Summary of Contents for magicolor 7450
Page 1: ...SERVICE MANUAL 2006 05 2006 05 Ver 1 0 Ver 1 0 FIELD SERVICE magicolor 7450 magicolor 7450 ...
Page 3: ...ii Blank Page ...
Page 26: ...SERVICE MANUAL 2006 05 Ver 1 0 FIELD SERVICE Main Unit magicolor 7450 magicolor 7450 ...
Page 43: ...2 Product specifications Field Service Ver 1 0 May 2006 6 magicolor 7450 General Blank Page ...
Page 288: ...SERVICE MANUAL 2006 05 Ver 1 0 FIELD SERVICE Lower Feeder Unit ...
Page 317: ...3 Other Field Service Ver 1 0 May 2006 26 Lower Feeder Unit Maintenance Blank Page ...
Page 328: ...SERVICE MANUAL 2006 05 Ver 1 0 FIELD SERVICE Duplex Option ...
Page 333: ...1 Product specifications Field Service Ver 1 0 May 2006 2 Duplex Option General Blank Page ...
Page 345: ...6 Jam Display Field Service Ver 1 0 May 2006 14 Duplex Option Troubleshooting Blank Page ...