Lexmark 5021-0XX - Manual (Page 225)

Diagnostic aids 3-17
5021-0XX
Serial number
The serial number is set at the factory and cannot be changed. This
is for viewing the serial number only.
The serial number will be XXXXXXXX (8-digit string)
Where X=A to Z, or 0 to 9.
If you replace the engine controller board, the serial number needs
to be identified from the serial number label on the printer.
Setting configuration ID
The configuration ID is used to communicate information about
certain areas of the printer that cannot be determined using
hardware sensors. The configuration ID is originally set at the
factory when the printer is manufactured, however it requires
resetting whenever you replace the operator panel cable and can be
set on the operator panel.
To set the configuration ID:
1. Obtain the configuration ID for this printer by opening the front
cover and looking for a sticker on the inner front cover.
2. Enter diagnostics mode, see “Diagnostic mode” on page 3-4 .
3. Select Configuration ID from the printer setup menu.
The current ID displays on the screen. The leftmost digit blinks
indicating that it is the first digit to be changed.
4. Press either Menu to change to the value you want.
5. Press Select to move to the next digit, or press Select again to
skip a digit.
Change each digit as required.
6. When the last digit is changed, press Select to validate the
Configuration ID.
• If the ID is invalid then "INVALID ID" message displays on
Line 2 before the ID re-displays. You have to reenter the
configuration ID until a valid ID is verified.