176 Chapter 9 Image quality EN
• The paper does not meet HP paper specifications.
• The printer’s operating environment does not meet specifications.
• The print density is set incorrectly.Change to a darker setting and
retry printing.
• The DC controller PCA is defective.
• The high-voltage power supply PCA is defective.
• The transfer roller is defective
.
• The message TRANSFER KIT LOW REPLACE TRANSFER KIT
appears on the printer control panel. Print out a configuration page
to verify the remaining life of the transfer belt. Replace the transfer
belt if necessary.
• The moisture content of your media may be uneven or too low. Use
media from a different source or from a new ream of paper.
• If some areas of the paper reject toner, try using paper from a
different source or from a new ream of paper.
• The media may be too rough and exceed media specifications. See
“Supported media specifications” on page 90. Do not use paper that
exceeds specifications.
• Check that the printing environment is within humidity specifications.
• Faded print could result from low toner in a particular toner
cartridge. If a Toner Low or Toner Out message displays on the
printer control panel, replace the appropriate toner cartridge.
• Check to see if the transfer belt is contaminated. Use a lint-free cloth
to clean any contaminants from the transfer belt surface.
• The connections into CL2 (ITB unit separation clutch) and CL3 (ITB
cleaning roller separation clutch) have been switched at the
clutches, not on the PCB. (This typically shows a light black print on
the page.)
• The toner cartridge is getting low on toner.
• The toner density setting is not adjusted correctly.
Dropouts
Faded print, faded areas, or faded vertical streaks
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