Actions Yes No
Step 1
a Navigate to Settings > Allow Background Removal.
Make sure that the value is set to On.
b Navigate to Settings > Print Settings > Quality Menu.
Decrease the toner darkness (8 is the default value).
Does the problem remain?
Go to step 2. The problem is solved.
Step 2
Enter the Configuration menu, and then select Print Quality Pages.
Does the problem remain?
Go to step 3. The problem is solved.
Step 3
a Make sure that the cartridge and photoconductor are installed.
b Make sure that the cartridge and photoconductor are supported.
Does the problem remain?
Go to step 4. The problem is solved.
Step 4
Enter the Diagnostics menu, and then navigate to:
PRINTER SETUP > Printed Page Count
Does the page count reach 300K or 600K?
Go to step 5. Go to step 6.
Step 5
Check the following parts for damage or contamination, and replace if
necessary:
• Transfer roller
• Transfer belt
• Developer unit
Does the problem remain?
Go to step 6. The problem is solved.
Step 6
a Make sure that the erase LED is properly installed.
b Check the LED for damage, and replace if necessary.
Does the problem remain?
Go to step 7. The problem is solved.
7421
Diagnostic information
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