Misfeed At Lct Feed And Lct Vertical Transport Section (Pc-403) - Konica Minolta bizhub C250 Service Manual

15. Jam Display
15.3.6

Misfeed at LCT feed and LCT vertical transport section (PC-403)

A. Detection Timing
Type
Detection of The leading edge of the paper does not block the Paper Take-up Sensor (PC1-
misfeed at LCT LCT) or Vertical Transport Sensor (PC2-LCT) even after the lapse of a given
feed section period of time after the Take-up Motor (M1-LCT) has been energized.
The Tray 2 Vertical Transport Sensor (PC8-PC) is not blocked even after the lapse
Detection of
of a given period of time after the paper has blocked the Vertical Transport Sensor
misfeed at LCT
(PC2-LCT).
vertical transport
The Vertical Transport Sensor (PC2-LCT) is not unblocked even after the lapse of
section
a given period of time after it has been blocked by the paper.
LCT Vertical Rise timing of load for registration is earlier than the one for making the loop at
Transport section front of the Registration Roller at LCT feed.
Loop Registration
Reversing JAM
The Vertical Transport Sensor (PC2-LCT) is blocked when the Main Power Switch
Detection of paper
is turned ON, a door or cover is opened and closed, or a misfeed or malfunction is
left in LCT
reset.
B. Action
Paper Take-up Sensor (PC1-LCT)
Vertical Transport Sensor (PC2-LCT)
Tray 2 Vertical Transport Sensor (PC8-PC)
Take-up Motor (M1-LCT)
Registration Roller Sensor (PC1)
Step
1 Initial check items
2 PC1 I/O check, Sensor check
3 PC1-LCT I/O check, Sensor check
4 PC2-LCT I/O check, Sensor check
5 PC8-PC I/O check, Sensor check
6 M1-LCT operation check
7 Change PWB-C1 LCT
8 Change PWB-M
322
Relevant Electrical Parts
Action
Field Service Ver. 1.0 Jul. 2005
Description
Control Board (PWB-C1 LCT)
Mechanical Control Board (PWB-M)
WIRING DIAGRAM
Control Signal
—
PWB-M CNSEN-3 (ON)
PWB-C1 LCT
PJ5C1 LCT-2 (ON)
PWB-C1 LCT
PJ5C1 LCT-5 (ON)
PWB-Z-PC PJ6Z PC-11 (ON)
PWB-C1 LCT PJ6C1 LCT-1 to 4
—
—
Location (Electri-
cal Component)
—
C-3
PC-403 C-7
PC-403 C-7
S-25
PC-403 C-8
—
—