Lexmark Optra 4049 Series, Service Manual

Page: 76 / 194

3-15
4049-XXX
Sensor Test
1. Enter Diagnostics mode.
2. Select [HARDWARE TESTS].
3. Select [Sensor Test].
4. Select one of the following sensor tests: Toner Low, Output Bin,
Input, Exit, or Cover Open.
5. When the sensor is blocked, [Open] is displayed. Otherwise,
[Closed]is displayed.
6. Press Return to return to the Diagnostics mode main menu.
Top Margin and Duplex Quick Tests
The Top Margin and Duplex Quick Test are used together to adjust
the duplex front-to-back registration. Make sure the non-duplex page
registration is correct before adjusting the duplex top margin.
1. Enter Diagnostics mode.
2. Select [DUPLEX TESTS].
3. Select [Top Margin].
4. Select [+] or [-] to raise or lower the back image 0.01 inches per
increment.
5. Press Return to return to the Diagnostics mode main menu.
The Duplex Quick Test is used to verify the Duplex Top Margin.
1. Enter Diagnostics mode.
2. Select [DUPLEX TESTS].
3. Select [Duplex Quick Test].
4. Press Return to return to the Diagnostics mode main menu.
There is some variation in the image position from sheet to sheet.
Print three or four test pages at each setting.