C0B80 Shift Motor Malfunction - Minolta Di152 Service Manual

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C0B80 Shift Motor malfunction

Shift Motor (OT-103: M1)
Home Sensor (OT-103: S31)
OT
Shift Motor
Home Sensor
Step Check
1 Shift Motor (OT-103: M1) turns when
the Power Switch is turned ON.
2 Exit Roller operates as the Shift
Motor (OT-103: M1) is energized.
3 Home Sensor (OT-103: S31) is oper-
ational.
<Check Procedure>
Check voltage across a Main Board
(OT-103: PWB-A) pin and GND when
the sensor is blocked.
• Voltage across PJ3A-3 and GND
DC5 V when blocked
DC0 V when unblocked
Relevant Electrical Parts
Main Board (OT-103: PWB-A)
Master Board (copier: PWB-A)
CN55
PJ58
S31
Result
NO
NO
NO
YES • Change Master Board (copier:
T-33
OT-103
PWB-A
Main Board
PJ3A
S31 ANODE
S31 ON
Action
• Change Shift Motor (OT-103: M1).
• Reinstall motor unit.
• Change Home Sensor (OT-103:
S31).
PWB-A).
PWB-A
Master
Board
Not Use
4022T536AA