Minolta Di450 Service Manual page 464

C0900, C0904
Step
1
Lift-Up Motor turns when the 3
out and then back in.
2 rd
3 Drawer Paper Lift-Up Motor rotation: the
voltage across PJ5A-3B on Control Board and
GND is DC0V (motor deenergized) and DC24V
(motor energized) after the 3
been slid back in.
3
I/O check for 3
Sensor operation: the voltage across PJ5A-9B
on Control Board and GND changes in the
range between DC0V and DC5V while 3
Drawer Paper Lift-Up Motor is turning.
4
I/O check for 3
the voltage across PJ8A-2 on Control Board
and GND is DC0V (sensor unblocked) and
DC5V (sensor blocked).
C0950, C0954
Step
1
Lift-Up Motor turns when the 4
out and then back in.
2
th
4 Drawer Paper Lift-Up Motor rotation: the
voltage across PJ5A-1B on Control Board and
GND is DC0V (motor deenergized) and DC24V
(motor energized) after the 4
been slid back in.
3
I/O check for 4
Sensor operation: the voltage across PJ5A-5A
on Control Board and GND changes in the
range between DC0V and DC5V while 4
Drawer Paper Lift-Up Motor is turning.
4
I/O check for 4
the voltage across PJ6A-2 on Control Board
and GND is DC0V (sensor unblocked) and
DC5V (sensor blocked).
Check
rd
Drawer is slid
rd
Drawer has
rd
Drawer Lift-Up Motor Pulse
rd
Drawer Paper Lift-Up Sensor:
Check
th
Drawer is slid
th
Drawer has
th
Drawer Lift-Up Motor Pulse
th
Drawer Paper Lift-Up Sensor:
T-56
Result
NO Correct drive coupling.
YES Change motor.
NO Change Control Board.
YES Change Control Board.
NO Correct drive coupling.
Change sensor.
rd
YES Change Control Board.
NO Change sensor.
Result
NO Correct drive coupling.
YES Change motor.
NO Change Control Board.
YES Change Control Board.
NO Correct drive coupling.
Change sensor.
th
YES Change Control Board.
NO Change sensor.
Action
Action