Action Yes No
Step 1
a Clear the paper path of debris and contamination.
b Remove, and then insert the imaging unit and toner cartridge.
Note: Shake the toner cartridge and imaging unit before
inserting them.
c Perform a POR.
d Enter the Diagnostics menu, and then select Advanced Print
Quality Samples.
Does the problem remain?
Go to step 2. The problem is
solved.
Step 2
a Make sure that the paper type is supported.
b Make sure that the paper type and size settings match the
paper type and size set on the tray.
c Make sure that the paper has no damage or defects.
d Make sure that the paper tray guides are properly set.
e Make sure that the paper size setting in the duplex unit is
properly set.
Does the problem remain?
Go to step 3. The problem is
solved.
Step 3
a Check the tray insert for proper installation and damage.
b Make sure that the separator roller is free of dust and
contamination.
c Check the lift plate for proper operation.
d Check the paper guides for proper operation.
Is the tray insert properly installed and free of damage?
Go to step 5. Go to step 4.
Step 4
Replace the tray insert.
Does the problem remain?
Go to step 5. The problem is
solved.
Step 5
a Enter the Diagnostics menu, and then navigate to:
Printer diagnostics & adjustments > Registration adjust
b Select Quick test or Duplex quick test.
c Adjust the following margins:
• Top Margin
• Bottom Margin
• Left Margin
• Right Margin
Does the problem remain?
Go to step 6. The problem is
solved.
3400-48x
Diagnostics and troubleshooting
83
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