Fip Low Paper Sensor is Defective

Step

Check point

Remedy

Yes

No

1

Perform the preliminary inspection. Parts to inspect:

LOW PAPER SENSOR, TRAY N/P HARNESS, MCU PWB

Replace/reinstall the defective part(s).

Go to Step 2.

2

Check: Power supply to LOW PAPER detection signal

• Is the voltage level correct at the pins below? - P20-18PIN<=>P20-19PIN: 5VDC

Go to Step 3.

Replace the MCU PWB.

3

Check: LOW PAPER detection signal

Is the voltage level correct depending on the conditions below?

- 20 sheets of paper are set: 0VDC

- 200 sheets of paper are set: 5VDC

Replace the MCU PWB.

Go to Step 4.

Does the P/H HARNESS ASSY have proper continuity at the pins below? - J107<=>P101

Replace the LOW PAPER SENSOR ASSY.

Replace the P/H HARNESS ASSY.

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