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