Lexmark X792 - Vertical Lines (Process Direction Using the ADF); Spots (Using Flatbed Scanner)

Diagnostic information 2-55
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Vertical lines (process direction using the ADF)
Spots (using flatbed scanner)
Step Check Yes No
1 Check the small platen glass on the scanner unit
assembly.
Is the large and small platen glass contaminated or
damaged?
Clean or replace
the scanner
platen glass
cover.
Go to step 2.
2
Check the three mirrors in the scanner unit assembly.
Are the three mirrors contaminated or show signs of
dust?
Clean the three
mirrors in the
scanner unit
assembly.
Go to step 3.
3
Check the white strip on the bottom of the large platen
glass.
Is the white strip contaminated?
Clean the white
strip and POR
the machine.
Go to step 4.
4
Perform a print test using the scanner unit assembly.
Does the error continue?
Replace the
scanner unit
assembly.
Go to “ADF unit
assembly
removal” on
page 4-203.
Problem solved.
5
Perform a print test using the ADF unit assembly.
Does the error continue?
Replace the
scanner
controller card
assembly.
Go to “ADF
controller card
removal” on
page 4-174.
Problem solved.
Step Check Yes No
1 Check the large platen glass on the scanner unit
assembly.
Is the large platen glass contaminated or damaged?
Clean or replace
the scanner
platen glass
cover.
Go to step 2.
2
Check the three mirrors in the scanner unit assembly.
Are the three mirrors contaminated or show signs of
dust?
Clean the three
mirrors in the
scanner unit
assembly.
Go to step 3.
3
Check the white strip on the bottom of the large platen
glass.
Is the white strip contaminated?
Clean the white
strip and POR
the machine.
Go to step 4.