• Verify on the menu settings page if the following are set to their default values:
– Print resolution: 600 dpi
– Toner darkness: 8
• Check the transfer roll for damage. Replace if damaged.
• Check the toner cartridge and imaging unit for damage. Replace if damaged.
• Print the print quality pages to see if the problem remains. Use Tray 1 to test print quality problems.
• Print a print quality test page, and then look for variations in the print from what is expected. Verify if the settings
under EP Setup are set to their default values. See “EP Defaults” on page 337.
• Check to ensure the correct printer driver for the installed software is being used. An incorrect printer driver for
the installed software can cause problems. Incorrect characters could print, and the copy may not fit the page
correctly.
Gray background on prints
ABCDE
ABCDE
ABCDE
Leading edge
Trailing edge
Actions Yes No
Step 1
Ensure the toner cartridge has sufficient toner.
Does the cartridge have sufficient toner?
Go to step 2. Replace the toner
cartridge.
Step 2
Remove any contamination from the CTLS contacts, located on the toner
level/imaging unit high voltage contact. Perform a print test.
Does the problem remain?
Go to step 3. Problem is solved.
Step 3
Check the CTLS, located on the toner level/imaging unit high voltage
contact, for damage.
Is it free of damage?
Go to step 4. Replace the toner
level/imaging unit high
voltage contact.
Step 4
Check the transfer roller for surface contamination or excessive wear.
Is it free of contamination and wear?
Go to step 5. Replace the transfer
roller.
4063
Diagnostic information
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