Lexmark 4039-1XX Manuale Utente

Service Manual

Random marks are nearly always due to a mechanical problem or 
due to foreign matter loose in the printer or in the print cartridge. 
Inspect and clean the inside of the printer carefully and correct any 
problems found.

If the test print frame is parallel to all edges of the page but the 
margins are not all the same width 

If the test print frame is not parallel to the left and right edges of the 
paper, the paper has skewed in the paper path. Check the paper 
path for obstructions. Make sure the paper in the tray is loaded 
properly and is undamaged. Check the prealigner, drive, and 
auxiliary rollers, springs, and backup rollers for dirt, wear, or 
damage; refer to the parts catalog for repair kits for broken bellcrank 
spring attachment hooks on the sideframe. Make sure all the 
bellcrank assemblies pivot freely. Check the gear train for damage or 
binds.

If the test print frame is parallel to the left and right edges of the 
paper but not parallel to the top and bottom, the printhead skew 
needs to be adjusted. 

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Check the continuity of the cable from (10P/10R/12R/12C/12L) J7 
(16L) J5 on the system board to the operator panel. Next, reseat the 
ROM and memory SIMMs and POR. This condition can also occur 
on models 10R/12R/12L/12C if a network card is installed without 
the accompanying DC power card.