Action Yes No
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
aect 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?
Go to step 3. The problem is
solved.
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
aect 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?
Go to step 4. The problem is
solved.
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?
Contact
customer
support.
The problem is
solved.
Troubleshooting 144
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