Lexmark 4039 - B/W Laser Printer, Service Manual

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42
Service Manual
4039-1XX
Permanent Page Count
The permanent page count can be displayed only. It cannot be
modified or reset by the customer or servicer.
1. Enter Diagnostics mode.
2. Select [Permanent Page Count].
3. Press Return to return to Diagnostics mode main menu.
Print Contrast (Transfer on “plus” machines)
This setting changes the transfer roll voltage to light, medium, or
dark (low, medium, or high on “plus” machines), but seldom
produces a visible difference in print darkness. This setting may be
useful in environmental extremes to prevent toner from being
deposited in white areas next to large black areas.
1. Enter Diagnostics mode.
2. Select [Print Contrast].
3. Select [Light], [Medium] or [Dark]; ([Low], [Medium] or [High] on
plus machines).
4. Press Return to return to the Diagnostics mode main menu.
Print Registration
See “Print Registration Adjustment” on page 61.
Print Test Page
You can run the Print Test even if the printer is not attached to a
computer. Use this test to check print and graphics quality and the
version numbers of printer microcode. The first page of this test
feeds from tray 1. Following pages continue to feed from this tray
unless you change the paper source.
To run the Print Test:
1. Turn the printer on.
2. Select [MENUS].
3. Select [TESTS MENU].