Repeating (Defects) Bands, Lines, Marks Or Spots; Repeating Defects Identification Chart; Example Of Scan Direction Banding - Xerox 7300B - Phaser Color Laser Printer Service Manual

Repeating (Defects) Bands, Lines, Marks or Spots

Repeating Defects Identification Chart

FRU or CRC
Imaging Unit
Transfer Unit
Fuser Assembly

Example of Scan Direction Banding

Troubleshooting
This is usually caused by a damaged roller in
the Imaging Unit, Fuser or Transfer Unit.
In some instances, the spots may be dark
instead of white and may also be in any shape,
but the defect is repeated on the print.
Print the Color Test Pages from the printer's
■
front panel.
Identify the primary color causing the
■
defect.
Print the Repeating Defects Page
■
Measure the defect and compare it to the
■
Repeating Defects Page to identify the
problem component.
7300-026
Replace the component causing the
■
problem.
Distance between Defects
94 mm (3.70 in.)
50 mm (1.97 in.)
44 mm (1.73 in.)
58 mm (2.29 in.)
143 mm (5.62 in.)
S7300-027
3-95