Misfeed At Tray 4 Feed And Tray 4 Vertical Transport Section (Pc203) - Konica Minolta bizhub C250 Service Manual

15. Jam Display
15.3.8

Misfeed at Tray 4 Feed and Tray 4 vertical transport section (PC203)

A. Detection Timing
Type
Detection of The leading edge of the paper does not block the Tray 4 Vertical Transport Sensor
misfeed at Tray 4 (PC126-PC) even after the lapse of a given period of time after the Tray4 Take-up
feed or Vertical Motor (M123-PC) has been energized.
Transport Section
The Tray 3 Vertical Transport Sensor (PC117-PC) is not blocked even after the
lapse of a given period of time after the paper has blocked the Tray 4 Vertical
Transport Sensor (PC126-PC).
The Tray 4 Take-Up Sensor (PC125-PC) is not unblocked even after the lapse of a
given period of time after it has been blocked by the paper.
Tray 4 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 Tray 4 feed.
Loop Registration
Reversing JAM
Detection of paper The Tray 4 Vertical Transport Sensor (PC126-PC) is blocked when the Main
left in Tray 4 Power Switch is turned ON, a door or cover is opened and closed, or a misfeed or
malfunction is reset.
The Tray 4 Take-Up Sensor (PC125-PC) 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.
B. Action
Tray 4 Take-Up Sensor (PC125-PC)
Tray 4 Vertical Transport Sensor (PC126-PC)
Tray 3 Vertical Transport Sensor (PC117-PC)
Tray4 Take-up Motor (M123-PC)
Registration Roller Sensor (PC1)
Step
1 Initial check items
2 PC1 I/O check, Sensor check
3 PC125-PC I/O check, Sensor check
4 PC126-PC I/O check, Sensor check
5 PC117-PC I/O check, Sensor check
6 M123-PC operation check
7 Change PWB-C2 PC
8 Change PWB-M
324
Relevant Electrical Parts
Action
Field Service Ver. 1.0 Jul. 2005
Description
Control Board (PWB-C2 PC)
Mechanical Control Board (PWB-M)
WIRING DIAGRAM
Control Signal
—
PWB-M CNSEN-3 (ON)
PWB-C2 PC
PJ10C2 PC-8 (ON)
PWB-C2 PC
PJ11C2 PC-2 (ON)
PWB-C2 PC
PJ6C2 PC-11 (ON)
PWB-C2 PC PJ9C2 PC-1 to 4
—
—
Location (Electri-
cal Component)
—
C-3
PC-103/203 G-6
PC-103/203 G-6
PC-103/203 C-4
PC-103/203
G-6 to 7
—
—