GAP light detection amount adjustment error

Error code
  • 100043 GAP light detection amount adjustment error
Occurrence condition
  • The light-receiving voltage of the GAP/PE sensor is out of the normal range.
Assumed cause
  • GAP/PE sensor (ADF PF roller1/2 rear paper transport sensors) defective
Related parts
  • ADF Board
  • ADF Unit
  • Sensor cables
Troubleshooting

Step

Confirmation and action

Yes

No

1

Check for dirt and foreign substances

  • Check the sensor and its reflector for dirt and foreign substances.
    Remove any dirt or foreign substances.
    For detailed cleaning instructions, see ADF Post PF Roller 1 Paper Feed Sensor/ Reflector and ADF Post PF Roller 2 Paper Feed Sensor/ Reflector.

Does the error still occur?

 Go to step 2 End of work

2

Check FFC connection

  • Check if the FFC of the sensor is properly connected.

FFC reconnection
Does the error still occur?

 Go to step 3 End of work
3 Replace other parts or components
Replace the following parts in sequence and check whether the symptom recurs after each replacement.
  1. Sensor FFC
  2. ADF Board
  3. ADF Unit
Does the error still occur?		 Contact Epson local service representatives. End of work