Xerox Phaser 3425, Руководство по обслуживанию

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Print-Quality Troubleshooting 5-9
Black Spots/Marks:
There are spots and/or
marks of toner on the
printed side of the page.
■
Print Cartridge
■
Fuser assembly
■
Paper transports
■
Transfer Roller
■
Replace the Print Cartridge.
NOTE: Refer to "Defects
Associated with Specific Printer
Components" on page 5-2 for
defect pitch
.
■
Inspect /clean/replace Fuser
assembly as necessary.
■
Clean contamination from paper
transports and exit rollers.
■
Clean /replace Transfer Roller
Spot or Vertical
Deletions:
Solid areas
are marked with irregular
white spots.
■
Damp paper
■
Foreign matter
contamination of
printer components.
■
Print Cartridge
■
Transfer Roller
■
Replace paper.
■
Check printer components for
surface contamination or paper
scraps. Clean as required.
■
If deletions repeat every 95 mm,
replace Print Cartridge.
NOTE: Refer to "Defects
Associated with Specific Printer
Components" on page 5-2 for
defect pitch
.
■
Remove the Transfer Roller and
clean (dust off). If deletions
repeat every 57 mm, replace
Transfer Roller.
Horizontal Bands:
Dark
bands appearing in the
horizontal direction.
■
Print Cartridge
■
Fuser Assembly
■
Transfer Roller
■
Incorrect high voltage
outputs.
■
Laser Assembly
■
Replace the Print Cartridge.
■
Inspect /clean/replace Fuser
Assembly as necessary.
■
Inspect the Transfer Roller spring
tension and bearing contacts.
■
Replace Power Supply Board.
■
Replace Laser Assembly.
Character Defects:
Garbled print, missing,
repeating or scrambled
characters are problems
relating to font data or
character generation.
■
Loose/defective
interface cables; cable
not within
specification.
■
Optional DIMM
memory
■
Main Board
■
Inspect cable connections; verify
that cables meet specified
requirements.
■
Replace optional DIMM memory.
■
Replace Main Board.
Image Defect Possible Cause Solution