Lexmark 450dn - E B/W Laser Printer Printing Manual - Page 9
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Print defects guide
Match a set of repeating defects on a print job to the marks on one of the vertical lines. The line that best
matches the defects on the print job indicates which particular part may be causing the defect.
For example, the distance between these two marks represents
a repeating defect that occurs every 38.2 mm (1.5 in.), which
means the charge rollers may need to be replaced.
Replace the
transfer roller
Replace the
charge rollers
38.2 mm
(1.5 in.)
Note: If the defect appears on the printed side of a single-sided print
Replace the toner cartridge
Developer roll
defect
47.8 mm
(1.88 in.)
51.7 mm
(2.04 in.)
job, replace the toner cartridge before replacing the fuser.
Photoconductor
defect
96.8 mm
(3.81 in.)
Print defects guide
Page 1 of 1
Replace the fuser
Backup roller
Fuser belt
defect
defect
79.8 mm
95.5 mm
(3.14 in.)
(3.76 in.)