Minolta Di450 Service Manual page 205

• Paper is stopped in the Vertical Transport Section.
Step
1 Vertical Transport Rollers are dirty with paper
dust, deformed, or worn.
2 Paper take-up guide plate or vertical transport
guide plate is dirty or deformed.
3
I/O check for 1
operation when the 1
age across PJ3A-6A on Master Board and
GND is DC0V when the sensor is unblocked
and DC5V when the sensor is blocked.
4
I/O check for 2
sor operation when the 2
voltage across PJ3A-6B on Master Board and
GND is DC0V when the sensor is unblocked
and DC5V when the sensor is blocked.
5 I/O check for Paper Leading Edge Sensor SW1
operation when the 1
age across PJ3A-3A on Master Board and
GND is DC0V when the sensor is unblocked
and DC5V when the sensor is blocked.
6 I/O check for Paper Leading Edge Sensor SW2
operation when the 2
voltage across PJ3A-3B on Master Board and
GND is DC0V when the sensor is unblocked
and DC5V when the sensor is blocked.
7 Upper Vertical Transport/Manual Feed Motor
turns when the Start key is pressed with the 1
Drawer selected.
8 Lower Vertical Transport Motor turns when the
Start key is pressed with the 2
selected.
Check
st
Drawer Paper Take-Up Sensor
st
Drawer is used: the volt-
nd
Drawer Paper Take-Up Sen-
nd
Drawer is used: the
st
Drawer is used: the volt-
nd
Drawer is used: the
nd
Drawer
T-14
Result
NO Change paper.
YES Clean or change.
YES Change Master Board.
NO Correct actuator.
Change sensor.
YES Change Master Board.
NO Correct actuator.
Change sensor.
YES Change Master Board.
NO Correct actuator.
Change sensor.
YES Change Master Board.
NO Correct actuator.
Change sensor.
NO Correct drive coupling.
st Change motor or Master
Board.
NO Correct drive coupling.
Change motor or Master
Board.
Action