Field Service Ver. 1.0 May 2006
13. Jam Display
185
magicolor 7450
T
roubleshooting
13.4.8
Misfeed at Tray 3 to 5 paper feed, Tray 3 to 5 vertical transport section
A. Detection Timing
B. Action
Type
Description
Detection of
misfeed at Tray 3 to
5 paper 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 Tray 3 to 5 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 (Electri-
cal Component)
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 ...