Action Yes No
Step 4
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 5. The problem is
solved.
Step 5
Adjust the toner darkness.
Does the problem remain?
Go to step 6. The problem is
solved.
Step 6
a Make sure that the toner cartridge is properly installed and free
of damage.
b Make sure that the smart chip contacts are free of corrosion
and contamination.
c Make sure that the developer roller surface is free of damage.
d Make sure that the toner HVPS contacts are free of corrosion
and contamination.
e Enter the Diagnostics menu, and then select Advanced Print
Quality Samples.
Does the problem remain?
Go to step 7. The problem is
solved.
Step 7
Replace the toner cartridge.
Does the problem remain?
Go to step 8. The problem is
solved.
Step 8
a Make sure that the imaging unit is properly installed and free
of damage.
b Make sure that the smart chip contacts are free of corrosion
and contamination.
c Make sure that the photoconductor roller surface is free of
damage.
d Make sure that the imaging unit HVPS contacts are free of
corrosion and contamination.
e Enter the Diagnostics menu, and then select Advanced Print
Quality Samples.
Does the problem remain?
Go to step 9. The problem is
solved.
3400-48x
Diagnostics and troubleshooting
37
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