Misfeed At Tray 2 Feed, Tray 2 Vertical Transport Section - Konica Minolta bizhub C250 Service Manual

15. Jam Display
15.3.4

Misfeed at Tray 2 feed, Tray 2 vertical transport section

A. Detection Timing
Type
Detection of The leading edge of the paper does not block the Tray 2 Vertical Transport Sensor
misfeed at Tray 2 (PC8-PC) even after the lapse of a given period of time after the Tray 2 Paper
feed section Feed Motor (M1-PC) has been energized.
The Registration Roller Sensor (PC1) is not blocked even after the lapse of a
Detection of
given period of time after the paper has blocked the Tray 2 Vertical Transport Sen-
misfeed at Tray 2
sor (PC8-PC).
vertical transport
Tray 2 Vertical Transport Sensor (PC8-PC) does not transmit the paper even after
section
the lapse of a given period of time after the paper has blocked PC8-PC.
Tray 2 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 2 feed.
Loop Registration
Reversing JAM
Tray 2 Vertical Transport Sensor (PC8-PC) is blocked when the Main Power
Switch is turned ON, a door or cover is opened and closed, or a misfeed or mal-
function is reset.
Detection of paper
left in Tray 2
Tray 2 Paper Take-Up Sensor (PC9-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 2 Paper Take-Up Sensor (PC9-PC)
Tray 2 Vertical Transport Sensor (PC8-PC)
Registration Roller Sensor (PC1)
Tray 2 Paper Feed Motor (M1-PC)
Step
1 Initial check items
2 PC9-PC I/O check, Sensor check
3 PC8-PC I/O check, Sensor check
4 PC1 I/O check, Sensor check
5 M1-PC operation check
6 Change PWB-Z-PC
7 Change PWB-M
320
Relevant Electrical Parts
Action
Field Service Ver. 1.0 Jul. 2005
Description
Tray 2 Control Board (PWB-Z-PC)
Mechanical Control Board (PWB-M)
WIRING DIAGRAM
Control Signal
—
PWB-Z-PC PJ6Z PC-8 (ON)
PWB-Z-PC PJ6Z PC-11 (ON)
PWB-M CNSEN-3 (ON)
PWB-Z-PC PJ5Z PC-1 to 4
—
—
Location (Electri-
cal Component)
—
S-25
S-25
C-3
M-24
—
—