Service manual

T- 6 2
C0998
C099C
Step Check Result Action
1 I/O check for Shifter Return Position Sensor
operation: the voltage across PJ7A-7A on Con-
trol Board and GND is DC5V (sensor
unblocked) and DC0V (sensor blocked).
YES Change Control Board.
NO Change sensor or Cabinet
Transport Board.
Change flat cable.
2 I/O check for Shifter Home Position Sensor
operation: the voltage across PJ7A-8A on Con-
trol Board and GND is DC5V (sensor
unblocked) and DC0V (sensor blocked).
YES Change Control Board.
NO Change sensor or Cabinet
Transport Board.
Change flat cable.
Step Check Result Action
1
Shift Motor turns when the 3
rd
Drawer is slid in
with paper loaded on the Shift Tray (paper is
movedtotheMainTray).
NO Correct drive coupling.
2 Shift Motor rotation: the voltage across PJ7A-
4B on Control Board and GND is DC0V (motor
deenergized) and DC24V (motor energized) in
step 1.
YES Change motor or Cabinet
Transport Board.
Change flat cable.
NO Change Control Board.
3 I/O check for Shift Motor Pulse Sensor opera-
tion: the voltage across PJ7A-3A on Control
Board and GND changes in the range between
DC0V and DC5V while the Shift Motor is turn-
ing.
YES Change Control Board.
NO Correct drive coupling.
Change sensor.