Lexmark Optra 4049 Series, Service Manual

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Diagnostic Aids 3-4
4049-XXX
Auto Clean Delay
This can be set from 1 to 60 seconds with a default of 1.
1. Enter Diagnostics mode.
2. Select [PRINTER SETUP].
3. Select [Auto Clean Delay].
4. Select [+] or [-] to display the delay desired.
5. Select [Save].
6. Press Return to return to the Diagnostics mode main menu.
Button Test
To test the operator panel buttons:
1. Enter Diagnostics mode.
2. Select [HARDWARE TESTS].
3. Select [Button Test].
4. Press each button. [Closed] is displayed until the button is
released. Then [Open] is displayed.
5. Press Return to return to the Diagnostics mode main menu.
Charge Roll
This setting varies the charge roll bias. It is used to reduce back-
ground on the output. In general, if there is background and the envi-
ronment is hot and humid, change the setting to low; if the
environment is cool and dry, change the setting to high. If the back-
ground is not reduced, try changing the setting the other way.
1. Enter Diagnostics mode.
2. Select [PRINTER SETUP].
3. Select [Charge Roll].
4. Select [High], [Medium] or [Low].
5. Press Return to return to the Diagnostics mode main menu.