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Table 39. Image defects (continued)
Problem
Contamination on back
Distorted images
Dropouts
Also see "Blank spots"
on page 266.
268 Chapter 7 Troubleshooting
Cause
Contamination inside printer (tray
separation roller, feed roller, transfer
charging roller, fuser, print cartridge).
Print media does not meet printer
specifications or is stored improperly.
Printer is due for preventive
maintenance kit.
Print media does not meet printer
specifications or is stored improperly.
Printer's operating environment does
not meet specifications.
Media is not moving through the
paper path correctly.
Poor connection of cables to the
laser/scanner.
Poor connection of cables to the DC
controller board.
Defective laser/scanner.
Defective DC controller board.
Paper might be too smooth.
Printer operating environment does
not meet specifications.
Wrong toner density setting.
Wrong fuser setting for paper type.
Maintenance due.
Solution
l
Print at least 10 pages to see if the
problem goes away.
l
Print a cleaning page. See "Create a
cleaning page" in chapter 4.
l
Identify and clean the contaminated part
according to the "Repeating defect ruler"
on page 273. If contamination cannot be
removed, replace the contaminated part.
l
Check for toner leaks.
l
Print a few more pages to see if the
problem corrects itself.
l
Turn over the stack of media in the tray.
Also try rotating the media 180 degrees.
l
If the print media does not meet HP
specifications, replace the media.
l
When printer reaches 350,000 pages
printed, install the preventive maintenance
kit.
l
Print a few more pages to see if the
problem corrects itself.
l
Turn over the stack of media in the tray.
Also try rotating the media 180 degrees.
l
If the print media does not meet HP
specifications, replace the media.
l
Make sure the printer's operating
environment meets specifications.
l
Check all rollers and motors for proper
operation.
l
Reseat the cables connected to the laser/
scanner.
l
Reseat the cables connected to the DC
controller board.
l
Replace the laser/scanner.
l
Replace the DC controller board.
l
Check the paper (or other print media)
type and quality.
l
Make sure the printer operating
environment meets specifications.
l
From the configure device menu on the
control panel, adjust the toner density
setting. Make sure EconoMode is off.
l
From the paper handling menu on the
control panel, change the fuser mode
setting or choose another paper type from
the printer driver.
l
When printer reaches 350,000 pages
printed, install the preventive maintenance
kit.
C8519-90912

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Troubleshooting

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