Lexmark ST9822 User Manual page 205

Troubleshooting
Action
Step 2
a
Remove the toner cartridge, and then remove the imaging unit.
Warning—Potential Damage: Do not expose the imaging unit
to direct light for more than 10 minutes. Extended exposure
to light may cause print quality problems.
Warning—Potential Damage: Do not touch the
photoconductor drum under the imaging unit. Doing so may
affect the quality of future print jobs.
b
Insert the imaging unit, and then insert the cartridge.
c
Print the document.
Do vertical dark bands appear on prints?
Step 3
a
Remove the imaging unit.
Warning—Potential Damage: Do not expose the imaging unit
to direct light for more than 10 minutes. Extended exposure
to light may cause print quality problems.
Warning—Potential Damage: Do not touch the
photoconductor drum under the imaging unit. Doing so may
affect the quality of future print jobs.
b
Remove any packing material that is stuck on the imaging unit.
Note: Make sure to remove any obstruction between the
charge roller and photoconductor drum.
c
Insert the imaging unit.
d
Print the document.
Do vertical dark bands appear on prints?
Step 4
a
Check if a bright light enters the right side of the printer, and
move the printer if necessary.
b
Print the document.
Do vertical dark bands appear on prints?
Yes No
Go to step 3. The problem is
solved.
Go to step 4. The problem is
solved.
Contact customer The problem is
support. solved.
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