Transport Section Misfeed - Konica Minolta bizhub C450 Service Manual

8. Jam Display
8.3.2

Transport section misfeed

A. Detection timing
Type
The 1st Tray Exit Sensor (PC1-FN) is not blocked even after the lapse of a given
period of time after the leading edge of the paper has blocked the Paper Sensor
(PC1-HO) of the Horizontal Transport Unit.
The Job tray Exit Sensor (PC19-FN) is not blocked even after the lapse of a given
period of time after the leading edge of the paper has blocked the Paper Sensor
(PC1-HO) of the Horizontal Transport Unit.
Transport section
misfeed detection
The Upper Entrance Sensor (PC4-FN) is not blocked even after the lapse of a
given period of time after the leading edge of the paper has blocked the Paper
Sensor (PC1-HO) of the Horizontal Transport Unit.
The Lower Entrance Sensor (PC2-FN) is not blocked even after the lapse of a
given period of time after the leading edge of the paper has blocked the Paper
Sensor (PC1-HO) of the Horizontal Transport Unit.
B. Action
Job Tray Exit Sensor (PC19-FN)
1st Tray Exit Sensor (PC1-FN)
Paper Sensor (PC1-HO)
Upper Entrance Sensor (PC4-FN)
Lower Entrance Sensor (PC2-FN)
Storage Sensor (PC3-FN)
Entrance Motor (M1-FN)
Upper Entrance Motor (M4-FN)
Lower Entrance Motor (M2-FN)
Step
1 Initial check items
2 PC19-FN I/O, sensor check
3 PC1-FN I/O, sensor check
4 PC1-HO I/O, sensor check
5 PC4-FN I/O, sensor check
6 PC2-FN I/O, sensor check
7 PC3-FN I/O, sensor check
8 M1-FN operation check
9 M4-FN operation check
10 M2-FN operation check
11 PWB-A FN replacement
28
Relevant electrical parts
Action
Field Service Ver. 1.0 Mar. 2005
Description
Control Board (PWB-A FN)
WIRING DIAGRAM
Control signal
—
PWB-A FN PJ14A-6 (ON)
PWB-A FN PJ19A-6 (ON)
PWB-A FN PJ15A-4 (ON)
PWB-A FN PJ20A-9 (ON)
PWB-A FN PJ19A-8 (ON)
PWB-A FN PJ20A-3 (ON)
PWB-A FN PJ9A-1 to 4
PWB-A FN PJ9A-5 to 8
PWB-A FN PJ9A-9 to 12
—
Location
(Electrical compo-
nents)
—
FS-507 B-4
FS-507 B-8
FS-507 B-5
FS-507 H-6
FS-507 B-8
FS-507 H-7
FS-507 B-2
FS-507 B-2
FS-507 B-2
—