Xerox Phaser 3600, Руководство по обслуживанию

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5-4 Phaser 3600 Printer Service Manual
Print-Quality Troubleshooting
Repeating Defects Measurement Table
Control Panel (Internal) Test Print
A test print is available to aid in determining the quality of output from the
printer and to assist in troubleshooting image-quality problem (see Test 8 in
the “Diagnostic Test Menu Map” on page 3-5). Each area of the test print is
used for a image-quality parameter. The following pages explain each of the
areas and the image-quality parameters. Follow these guidelines when
generating the test print:
■
Use supported paper from a fresh, unopened ream
■
Print five copies of the test print.
■
Discard the first two prints and retain the remaining prints for image-
quality analysis.
Deletions
Inspect the test print for the presence of deletions or unprinted spots. If these
are found, see “Repeating Bands, Lines, Marks, or Spots” on page 5-22.
Repeating Defects
Assembly Component
Distance between
Defects
Typical Defect
Print Cartridge Developer Roller 50 mm (1.97 in.) Horizontal image band
Drum 94 mm (3.70 in.) White spots on black
image or black spots
on white
Drum Charge
Rollers
38 mm (1.50 in.) Black spots
Supply Roller 42 mm (1.65 in.) Light or dark
horizontal image
bands
Transfer Roller Transfer Roller 56 mm (2.20 in.) Image ghost
Fuser Assembly Heat Roller 126 mm (4.96 in.) Black spots and image
ghost
Pressure Roller 126 mm (4.96 in.) Black spots on back