EN Chapter 7 Troubleshooting 237
Horizontal
smudges
Paper-path contamination or
damage.
1. See the “Repetitive defect
ruler” on page 243.
2. Check the toner cartridge and
replace it if necessary.
3. Check the fuser and replace it,
if necessary.
Horizontal
white lines
1. Check the toner cartridge and
replace it if necessary.
2. Check the fuser and replace it
if necessary.
3. Replace the laser/scanner
assembly, followed by the engine
controller board, if necessary.
Table 42. Image defects
Problem Cause Solution
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