122 Chapter 6 Troubleshooting C4170-90959
Distorted Image
Possible Cause Action
Paper does not meet
printer specifications
or is stored
improperly.
1) Print a few more pages to see if the problem
corrects itself.
2) Turn over the stack of paper in the tray. Also try
rotating the paper 180 degrees.
3) Check the paper (or other print media) type and
quality. Replace the paper, and advise the customer
to use the recommended paper and store it properly.
See “Media Troubleshooting” (page 134).
Printer’s operating
environment does not
meet specifications.
Make sure the printer’s operating environment meets
specifications. See “Operating Environment”
(page 26).
Wrong output bin for
paper type.
Print to a different output bin.
Poor connection to the
Intermediate PCB.
Reconnect the cables from the Laser Scanner
Assembly to the Intermediate PCB (J1001, J1009).
Poor connection of
cables to the Engine
Controller Assembly.
Reseat the cables connected to the Engine
Controller Assembly (J410).
Defective Laser
Scanner.
Replace the Laser Scanner.
Main motor failure. Replace main motor.
Gear train failure. Replace gear plate.
Defective Engine
Controller Assembly.
Replace the Engine Controller Assembly and the
Intermediate PCB.
Dropouts
Possible Cause Action
Paper might be too
smooth.
Check the paper (or other print media) type and
quality. See “Media Troubleshooting” (page 134).
Printer’s operating
environment does not
meet specifications.
Make sure the printer’s operating environment meets
specifications. See “Operating Environment”
(page 26).
Wrong toner density
setting.
Adjust the toner density setting in the print driver.
Make sure EconoMode is off.
Single sheet of paper
defective.
Try reprinting the job.
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