ALD PID reverse error

Error code
  • 100034 ALD PID reverse error
Occurrence condition
  • The drive motor is rotating in reverse.
Assumed cause
  • An abnormal load was suddenly applied to the motor, and the motor rotated in the opposite direction due to the reaction force.
Related parts

  • Gear trains

  • Drive motor

  • Circuit board (Motor drive board)

  • Encoder scale

  • Encoder sensor

Troubleshooting

Step

Confirmation and action

YES

NO
1

Check for foreign objects

  • Check the ADF Unit for foreign objects.
    Remove foreign objects, if any.
    Does the error still occur?
 Go to step 2 End of work
2

Check harness connection

  • Is the harness connecting the motor and encoder properly connected?
    Reconnect the harness.
    Does the error still occur?
 Go to step 3 End of work
3

Check the gear trains

  • Check the gear trains of the ADF Unit for disengagement, damage, or abnormalities.
    Reassemble the gear train components.
    Does the error still occur?
 Go to step 4 End of work
4

Check the encoder

  • Check the encoder scale and encoder sensor for dirt and abnormalities.
    Replace the encoder sensor or scale.
    Does the error still occur?
 Go to step 5 End of work
5

Replace the other parts or components

  • Replace the following parts in sequence and check whether the symptom recurs after each replacement.
    (1) ADF Board, (2) Motor, (3) ADF Unit
    Does the error still occur?
 Contact Epson local service representatives. End of work