Lexmark MX721 User Manual page 270

Troubleshooting
Action
Step 1
a
Open the scanner cover.
b
Using a damp, soft, lint‑free cloth, wipe the ADF glass pad (A)
and ADF glass (B).
c
Close the scanner cover.
Do vertical streaks appear on scanned documents?
Step 2
a
Open the scanner cover.
b
Using a damp, soft, lint‑free cloth, wipe the ADF glass (A) and
ADF glass pad (B) in door E.
c
Close the scanner cover.
Do vertical streaks appear on scanned documents?
Jagged image or text when scanning from the ADF
Yes No
Go to step 2. The problem is
solved.
Contact customer The problem is
support. solved.
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