Fixing Print Quality Issues; Gray Background Or Toner Fog Check - Lexmark MB3442 Service Manual

Diagnostics and troubleshooting

Fixing print quality issues

Gray background or toner fog check

Note: Before performing this print quality check, print the Print Quality Test Pages.
From the control panel, navigate to Settings > Troubleshooting > Print Quality
Test Pages, and then perform the initial print quality check. See
initial troubleshooting check on page
1. Perform the following tests:
a. Remove any packing material left on the imaging unit.
Note: You may need a pair of pliers to remove pieces of plastic inside the
imaging unit.
b. Make sure that there are no obstructions between the charge roller and
photoconductor drum.
Does the problem remain?
◦ Yes:
Go to the next step.
◦ No:
The problem is solved.
2. Perform the following tests:
a. Turn off the printer, wait for 10 seconds, and then turn on the printer.
b. Set the toner darkness to a lighter setting.
From the control panel, navigate to Settings > Print > Quality > Toner Darkness.
Does the problem remain?
◦ Yes:
Go to the next step.
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Performing the