Solution; C0B80: Shift Motor Malfunction - Konica Minolta Bizhub 162 Service Manual

Field Service Ver. 1.0 Apr. 2005
4.2

Solution

4.2.1

C0B80: Shift Motor Malfunction

A. Detection Timing
Trouble Code
• The Home Sensor (S31/OT) is LOW at a timing immediately before the Shift
C0B80
• The Home Sensor (S31/OT) is LOW after the lapse of a given period of time
B. Action
Shift Motor (M1/OT)
Home Sensor (PC31/OT)
Step Operations
Check PC31/OT connectors for
1 proper connection and correct as
necessary.
Check M1/OT connectors for proper
2
connection and correct as necessary.
Check M1/OT for correct drive cou-
3
pling and correct as necessary.
4 M1/OT operation check
5 PC31/OT sensor check
6 Change PWB-A/OT.
7 Change PWB-A.
Motor (M1/OT) starts turning backward.
after the Shift Motor (M1/OT) has started turning backward.
Relevant Electrical Components
Ref.
Page
☞
☞
Description
Control Board (PWB-A/OT)
Master Board (PWB-A)
WIRING DIAGRAM
Control signal
– –
– –
– –
9 –
PWB-A/OT
7
PJ3A/OT-3 (ON)
– –
– –
4. Malfunction code
Location
(Electrical
Components)
–
–
–
D-17
D-18
–
–
11