Minolta Di450 Service Manual page 428

(4) Fusing/Exit Misfeed
Paper Exit Sensor (PC9)
Fusing Motor (M2)
M2
PC9
SL3
Fusing/Exit Misfeed Troubleshooting Procedures
• Paper is at a stop at the Fusing Unit.
Step
1 Fusing Guide Plate is dirty or deformed.
2 Fusing Rollers are dirty or scratched.
3 Fusing Roller Paper Separator Fingers are
dirty, deformed, or worn.
4 Fusing Motor turns when the Start key is
pressed.
• Paper is at a stop at the exit section.
Step
1 Exit Roller is dirty or scratched.
2 I/O check for Paper Exit Sensor: the voltage
across PJ9A-3A on Master Board and GND is
DC0V when the sensor is unblocked and DC5V
when the sensor is blocked.
3 Fusing Motor turns when the Start key is
pressed.
Relevant Electrical Parts
Exit/Duplex Switching Solenoid (SL3)
Master Board (PWB-A)
PJ109
4
3
2
1
CN30
PJ9
3 1 11
2 2 10
1 3 9
11 1
CN203
CN22
1 1 1 7
2 2 2 6
7 1
Check
Check
T-20
PWB-A
PJ7A-2A(M2 ON)
PJ7A-1A(M2 LOCK)
PJ9A-1A(DC5V)
PJ9A-2A(GND)
PJ9A-3A(PC9 ON)
PJ9A-1B(DC24V)
PJ9A-2B(SL3 ON)
4002C04TAA
Result Action
YES Clean or change.
YES Clean or change.
YES Clean, correct, or change.
NO Correct drive coupling.
Change motor or Master
Board.
Result Action
YES Clean or change.
YES Change Master Board.
NO Correct actuator.
Change sensor.
NO Correct drive coupling.
Change motor or Master
Board.