
T- 1
1. INTRODUCTION
• This chapter contains the items required or used when troubleshooting various machine
problems.
1-1. Electrical Components Check Procedures
• The following procedures can be used to check to see if an electrical component is fully
operational when a paper misfeed or other malfunction occurs in the machine.
(1) Sensors
Step Check Result Action
1
Does the input signal to the Controller/Mechanical
Control Board go from HIGH to LOW, or vice versa,
when the sensor is blocked?
NO Replace the sensor.
YES
Replace the AF
Control Board.
4025T520AA
4025T521AA
Comments to this Manuals