C0991: Lct Lift Failure - Konica Minolta Bizhub C350 Service Manual

Includes: standard controller df-601 pc-101/pc-201 pc-401 ad-501 fs-501
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bizhub C350 Field Service Ver.1.0 Mar. 2004
2.3.2

C0991: LCT Lift Failure

A. Detection timing
Malfunction code
The Tray Upper Limit Sensor (PC4-LCT) is not blocked even after the set period of
time has elapsed after the paper lift-up operation began.
The Tray Upper Limit Sensor (PC4-LCT) is not blocked even after the set pulse is
detected by the Elevator Motor Pulse Sensor (PC10-LCT) after the paper lift-up
operation began.
The Tray Lower Position Sensor (PC13-LCT) is not unblocked even after the set
pulse is detected by the Elevator Motor Pulse Sensor (PC10-LCT) after the paper
lift-up operation began.
The Tray Upper Limit Sensor (PC4-LCT) is not blocked even after the set period of
time has elapsed after the paper lift-up operating.
C0991
The Tray Lower Position Sensor (PC13-LCT) is not blocked even after the set
period of time has elapsed after the paper lift-down operation began.
The Tray Lower Position Sensor (PC13-LCT) is not blocked even after the set pulse
is detected by the Elevator Motor Pulse Sensor (PC10-LCT) after the paper lift-
down operation began.
The Tray Upper Limit Sensor (PC4-LCT) is not unblocked even after the set pulse
is detected by the Elevator Motor Pulse Sensor (PC10-LCT) after the paper lift-
down operation began.
The Lower Limit Sensor (PC7-LCT) is blocked while the paper lift-down operating.
B. Action
Tray Upper Limit Sensor (PC4-LCT)
Tray Lower Position Sensor (PC13-LCT)
Elevator Motor Pulse Sensor (PC10-LCT)
Lower Limit Sensor (PC7-LCT)
Step
Check the sensor connectors for proper
1
connection, and correct as necessary.
2
PC4-LCT I/O, sensor check
3
PC13-LCT I/O, sensor check
4
PC10-LCT I/O, sensor check
5
PC7-LCT I/O, sensor check
6
PWB-C1 LCT replacement
Relevant electrical parts
Action
4-7
Description
Main Control Board (PWB-C1 LCT)
WIRING DIAGRAM
Control signal
-
PWB-C1 LCT PJ5C1 LCT-12
PWB-C1 LCT PJ3C1 LCT-9
PWB-C1 LCT PJ3C1 LCT-5
PWB-C1 LCT PJ3C1 LCT-2
-
Trouble code
Location
(Electrical compo-
nents)
-
B-6
D-2
F-2
H-2
E-8

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