Printronix SL4M Manuale Utente

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Solving Other Printer Problems
181
Smears or voids in printed 
image.
1.
Clean the printhead.
2.
Make sure the printhead temperature (Print Intensity) is 
not too high. Change the Print Intensity value in the 
MEDIA SETUP menu. See “Print Intensity” on page 70.
3.
Verify that the printhead pressure switch are positioned 
correctly to match the media thickness installed.
4.
Make sure the printhead balance adjustment dial is set 
properly for the media width installed.
5.
Make sure that the ribbon is routed correctly and not 
routed through the media sensor assembly.
6.
Skin oils can adhere to the surface of label stock, causing 
fingerprints which inhibit thermal transfer. Wipe label stock 
with a cloth, or remove a few feet of labels to expose a 
clean area. Handle labels by the edges.
7.
Check that the media has not been mishandled before or 
during installation in the printer. Soiled media or media 
with fingerprints will prevent proper ribbon transfer.
8.
Check that media has not been installed inside out. 
Surfaces on both sides may look identical but can produce 
big differences in print quality.
9.
Make sure the correct ribbon and media combination are 
being used. Use the correct ribbon type.
10. Check the ribbon for creases or folds across its surface. 
Smooth out the ribbon to remove any creases.
11. Reduce the Print Speed value through the MEDIA SETUP 
menu or via host software.
12. If using ribbon (Transfer Print mode), do not use direct 
thermal media.
Table 13. Printer Problems and Solutions (continued)
Symptom
Solution/Explanation