Lexmark 4039-1XX Manuale Utente

Service Manual

A message describing test progress is displayed during the test.

1. Enter Diagnostics mode. 

2. Select [Device Test]

3. Select [Disk Test/Clean]. 

4. Select [CONTINUE] to start the test, or [CANCEL] to return to 

Diagnostics mode main menu. 

5. Select [CANCEL] to interrupt the test. 

6. Press Return to return to Diagnostics mode main menu.

This test checks for slipping paper problems. It verifies that the 
paper is entering the duplex unit far enough for the trailing edge to 
clear the selector fingers before the paper reverses direction.

1. Enter Diagnostics mode. 

2. Select [Duplex Tests]. 

3. Select [Duplex Feed 1]. 

4. Select [Tray 1], or [Tray 2].

Note:  Paper feeds all the way into the duplex unit and stop. 

5. The message [CLEAR PAPER] appears on the display. 

6. Slide the tray extension all the way out until it stops. 

7. Push a small screwdriver through the lower end of one of the 

ventilation slots and through the sheet of paper fed in under the 
slot. 

8. Open the cover and remove the sheet of paper. 

9. Measure the distance from the mark on the paper to the trailing 

edge of the paper. If the mark, or hole, is more than 95 mm from 
the trailing edge, there is a paper slipping problem with the 
duplex unit paper feed.