1. Enter the SP mode, then execute SP3-017-001 (TnrRmnSnsFc).
  2. Check the output count of each color toner in the following SPs.
    SP3-411-005: SnsOutCntAvK
    SP3-411-006: SnsOutCntAvY
    SP3-411-007: SnsOutCntAvM
    SP3-411-008: SnsOutCntAvC

    • If the sensor output count is "0 times", the harness is likely to be broken.

  3. Replace the sensor harness of the corresponding color.