Xerox error code 124-315

The serial no., product no., and billing count are stored at three locations; the MCU NVM PWB (IOT), the SEEP ROM (SYS1) on the Backplane (BP) PWB, and the ESS NVM PWB (SYS2). This procedure allows the data in all three locations to be synchronized in case of replacement of one of the PWBs, or due to data corruption associated with one of the following faults:

  • 124-324 (3 Billing Counter Mismatch)
    124-325 (1 Billing Counter Mismatch; Unable to recover Billing Counter during recovery)
    124-312 (Product No. Mismatch)
    124-313 (Serial No. Mismatch)
    124-310 (Product No. Failure: Not initialized)
  • 124-311 (Serial No. Failure: Not initialized)


  1. Enter UI Diagnostic mode ( Accessing UI Diagnostics).
    Select Adjustment/Others.
    Select Machine ID/Billing Data Settings.
    Select a PWB with the correct data.
    Select Start.
  2. Enter the correct serial number in the Serial Number screen and then select Confirm.

Posted in: Blog, Technical

Leave a Comment (5) ↓


  1. KASSIM O KIBWANA January 15, 2016

    my broblem is that i have the xerox machine their have displayed 124- 315 please help me

    • Andrew March 7, 2016

      Did you get this after you replaced some equipment in the copier? I think you need to do a sync with the new board.

  2. Rick September 5, 2018

    Thanks for posting this as it was the answer. A power outage put an older 570 into this state.

  3. KHADAR December 29, 2019

    I have a c7020 versalink machine.
    I have a problem with this machine so it displays an error code of 124-315.

    can you please help me.

  4. Emmanuel Boadi February 6, 2020

    Xerox error code 124-315 is on my screen please help me.


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