Lct Paper Take-Up Section/Vertical Transport Section Misfeed - Konica Minolta bizhub C250 Service Manual

7. Jam Display
7.3.2

LCT Paper Take-Up section/Vertical Transport section misfeed

A. Detection timing
Type
LCT Paper Take-Up The leading edge of the paper does not block the Paper Take-up Motor (PC1-
section misfeed LCT) or the Vertical Transport Sensor (PC2-LCT) even after the set period of time
detection has elapsed after the Take-up Motor (M1-LCT) is energized.
LCT Vertical The Tray 2 Vertical Transport Sensor (PC8-PC) is not blocked even after the lapse
transport section of a given period of time after the Vertical Transport Sensor (PC2-LCT) has been
misfeed detection blocked by a 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 take-up.
Loop Registration
Reversing JAM
The Vertical Transport Sensor (PC2-LCT) is blocked when the Main Power Switch
is set to ON, a door or cover is opened and closed, or a misfeed or malfunction is
reset.
LCT detection of
paper remaining
The Paper Take-up Motor (PC1-LCT) is blocked when the Main Power Switch is
set to ON, a door or cover is opened and closed, or a misfeed or malfunction is
reset.
The Paper Take-up Motor (PC1-LCT) is not unblocked even after the lapse of a
Misfeed detected
given period of time after PC1-LCT has been blocked by a paper.
as a result of
delayed deactiva-
The Vertical Transport Sensor (PC2-LCT) is not unblocked even after the lapse of
tion of sensor
a given period of time after PC2-LCT has been blocked by a paper.
B. Action
Paper Take-up Motor (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, sensor check
3 PC1-LCT I/O, sensor check
4 PC2-LCT I/O, sensor check
5 PC8-PC I/O, sensor check
6 M1-LCT operation check
7 PWB-C1 LCT replacement
8 PWB-M replacement
28
Relevant electrical parts
Action
PWB-C1 LCT PJ5C1 LCT-2 (ON)
PWB-C1 LCT PJ5C1 LCT-5 (ON)
PWB-C1 LCT PJ6C1 LCT-1 to 4
Field Service Ver. 1.0 Jul. 2005
Description
Control Board (PWB-C1 LCT)
Mechanical Control Board (PWB-M)
WIRING DIAGRAM
Control signal
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PWB-Z-PC PJ6Z PC-11 (ON)
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Location
(Electrical
components)
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PC-403 C-7
PC-403 C-7
C250 S-25
PC-403 C-8
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