Introduction; Checking The Electrical Components; Sensor; Switch - Minolta CF2002 Service Manual

1.

INTRODUCTION

• Information required for troubleshooting and steps that must be performed are described
in this chapter.
1-1.

Checking the electrical components

• If a paper misfeed or malfunction occurs, perform the following operation to check the
condition of the electrical components.
(1)

Sensor

Step
Does the input signal of the master board change (H → L,
1
L → H) when the sensor light is interrupted?
(2)

Switch

Step
Does the input signal (NO) of the master board change from
1
L to H when the switch is turned on?
Check
4025T520AA
Check
COM
Not Use
NO
T-1
Result Action
NO Replace the sensor.
Replace the control
YES
board.
4025T521AA
Result Action
NO Replace the switch.
Replace the control
YES
board.
4025T523AA