Front Panel Test Print - Xerox 3450B - Phaser B/W Laser Printer Service Manual

Fuser
■
Hot or Cold Offsetting
■
Repeating Defects
■
Voids
Repeating Defects
Assembly
Print Cartridge
Transfer Roller
Fuser Assembly

Front Panel Test Print

A test print is available to aid in determining the quality of output from the printer and
to assist in troubleshooting problems. Each area of the test print is used for a print-
quality parameter. The following pages explain each of the areas and the print-quality
parameters.
From the printers front panel menus select
--> Test Prints.
Use supported paper from a fresh, unopened ream (whenever possible), to check the
image quality of prints. Make five copies of the test print. Discard the first two prints
and retain the remaining prints for image-quality analysis.
Print-Quality Troubleshooting
Component
Developer Roller
Drum
Drum Charge Rollers
Supply Roller
Transfer Roller
Heat Roller
Pressure Roller
Distance
between Defects
49 mm (1.93 in.)
95 mm (3.74 in.)
38 mm (1.50 in.)
45 mm (1.77 in.)
57 mm (2.24 in.)
82 mm (3.23 in.)
92 mm (3.62 in.)
Troubleshooting --> Service Tools
Typical Defect
Horizontal image band
White spots on black image
or black spots on white
Black spots
Light or dark horizontal
image bands
Image ghost
Black spots and image
ghost
Black spots on back
5-3