Repeating Defects Measurement Table; Control Panel (Internal) Test Print - Xerox Phaser 3600 Service Manual

Print-Quality Troubleshooting

Repeating Defects Measurement Table

Control Panel (Internal) Test Print

Deletions
5-4
Repeating Defects
Assembly Component
Print Cartridge Developer Roller
Drum
Drum Charge
Rollers
Supply Roller
Transfer Roller Transfer Roller
Fuser Assembly Heat Roller
Pressure Roller
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.
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.
Distance between
Defects Typical Defect
50 mm (1.97 in.) Horizontal image band
94 mm (3.70 in.) White spots on black
image or black spots
on white
38 mm (1.50 in.) Black spots
42 mm (1.65 in.) Light or dark
horizontal image
bands
56 mm (2.20 in.) Image ghost
126 mm (4.96 in.) Black spots and image
ghost
126 mm (4.96 in.) Black spots on back
Phaser 3600 Printer Service Manual