Lexmark Optra E 4026-0 Series Reference Handbook page 149

LCD Test
To test the operator panel display:
1. Enter Diagnostics mode.
2. Select [HARDWARE TESTS].
3. Select [LCD Test].
4. Select [Single] or [Continuous].
5. The display goes through a continuous sequence of turning pels
on and off.
6. Press Return to stop continuous LCD test.
7. Press Return to return to the Diagnostics mode main menu.
Memory Tests
1. Enter Diagnostics mode.
2. Select HARDWARE TESTS].
3. Select [Memory Test].
4. Select either [DRAM], or [ROM].
5. Select [Single] or [Continuous].
6. The display indicates [PASSED], or [FAILED].
7. Select [CANCEL] to stop continuous memory test.
8. Press Return to return to the Diagnostics mode main menu.
Paper Feed Tests
Tray 1
Tray 2
Tray 3
Multipurpose
Feeder
Page Count
To view or set the page count:
1. Enter Diagnostics mode.
2. Select [PAGE COUNTS].
3. Select [Page Count].
4. Choose any number between 0000000 and 9999999 by selecting
[Next] to move the cursor under each digit. Select [+] or [-] to
select the number you want in each digit.
5. Select [SAVE] to save the page count displayed.
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Laser Printer Reference Handbook