SC120Ricoh SP 3710DNHas video

Ricoh SP 3710DN Error SC120: Scanner Home Position Fix

Error code SC120 occurs when the scanner home position sensor does not detect the scanner carriage returning to its home position during initialization or scanning operations.

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Common causes

  • 1Engaged scanner transport lock pin.
  • 2Faulty or disconnected scanner home position sensor.
  • 3Defective scanner drive belt or stepper motor.
  • 4Dirty white reference optics calibration strip.

Solutions

Resolving Error SC120

This error indicates a mechanical obstacle or optical detection failure within the scanner optics assembly.

Recommended Actions:

  1. Check Scanner Transport Lock: Ensure the mechanical lock switch near the glass bed is disengaged.
  2. Clean Calibration Strip: Inspect and clean the underside white reference strip on the exposure glass using a lint-free cloth.
  3. Power Reset: Turn off the device, wait 30 seconds, and turn it back on to allow the scanner carriage motor to re-home.

Steps to follow

  1. 1

    Power Off Equipment

    Turn off the main power switch on the printer.

  2. 2

    Check Mechanical Lock

    Ensure the scanner lock lever is set to the unlocked position.

  3. 3

    Clean Glass Bed

    Wipe the platen glass and white strip area to clear dust or debris.

  4. 4

    Reboot Machine

    Turn the printer back on and verify if the scanner carriage cycles properly.

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Frequently asked questions

Yes, heavy dust or debris on the white reference strip can prevent the optical sensor from registering home position.