Skip to Content Information Center
Lexmark CX725

Lexmark CX725

Not your product?

NVRAM mismatch failure service check

Warning—Potential Damage:  To avoid NVRAM mismatch issues, replace only one of the following components at a time:

  • Control panel
  • Controller board

    To replace a component and to test whether the problem is resolved:

  1. Replace the affected component.

    Warning—Potential Damage:  Do not perform a Power‑On Reset (POR) until the problem is resolved. If a POR is performed at this point, then the replacement part can no longer be used in another printer and must be returned to the manufacturer.

  2. Enter the Diagnostics menu. The Diagnostics menu allows you to use temporarily the replacement part.

    Warning—Potential Damage:  Some printers perform automatically a POR if the Diagnostics menu is not opened within five seconds. If a POR is performed at this point, then the replacement part can no longer be used in another printer and must be returned to the manufacturer.

  3. Use the Diagnostics menu to test the replacement part. Perform a feed test to check if the problem is resolved.

    • If the problem is not resolved—Turn off the printer, and then install the old part.
    • If the problem is resolved—Perform a POR.
ActionYesNo

Step 1

Check if the control panel was recently replaced.

Was the control panel recently replaced?

Go to step 2.

Go to step 4.

Step 2

Replace the current control panel with the original control panel. See Control panel removal.

Does the problem remain?

Go to step 3.

The problem is solved.

Step 3

Replace the original control panel with a new control panel.

Note:  Make sure that the new control panel is not previously installed from another printer.

Does the problem remain?

Contact the next level of support.

The problem is solved.

Step 4

Check if the controller board was recently replaced.

Was the controller board recently replaced?

Go to step 5.

Contact the next level of support.

Step 5

Replace the current controller board with the original controller board. See Controller board removal.

Does the problem remain?

Go to step 6.

The problem is solved.

Step 6

Replace the original controller board with a new controller board.

Note:  Make sure that the new controller board is not previously installed from another printer.

Does the problem remain?

Contact the next level of support.

The problem is solved.
Was this article helpful?


Related content

Top