Service manual

T- 2 7
Duplex Paper Take-Up Misfeed Troubleshooting Procedures
• Paper is stopped at the turnover section.
Step Check Result Action
1 Rollers at the turnover section are dirty,
deformed, or worn.
YES Clean or change.
2 Guide plate at the turnover section is dirty or
deformed.
YES Clean, correct, or change.
3 A torn piece of paper is left at the turnover sec-
tion.
YES Clean.
4 I/O check for Turnover Feed Entry Sensor oper-
ation: the voltage across PJ8A-9 on Master
Board and GND is DC0V when the sensor is
unblocked and DC5V when the sensor is
blocked.
YES Change Master Board.
NO Correct actuator.
Change sensor.
5 I/O check for Turnover Feed Jam Sensor oper-
ation: the voltage across PJ8A-6 on Master
Board and GND is DC0V when the sensor is
unblocked and DC5V when the sensor is
blocked.
YES Change Master Board.
NO Correct actuator.
Change sensor.
6 I/O check for Turnover/Exit Sensor operation:
the voltage across PJ8A-3 on Master Board
and GND is DC0V when the sensor is
unblocked and DC5V when the sensor is
blocked.
YES Change Master Board.
NO Correct actuator.
Change sensor.
7 Horizontal Transport Motor rotation: the voltage
across PJ12A-5 on Control Board and GND is
DC0V when the motor is deenergized and
DC5V when the motor is energized.
YES Change motor.
NO Change Control Board.
8 Turnover Motor rotation NO Correct drive coupling.
Change motor or Master
Board.