Technical data

7.6 Deletions, Blank, or White Spots
7.6 Deletions, Blank, or White Spots
Description: Toner is missing from dark areas of the print. Might
appear as vertical, horizontal, or as blotchy white spots.
Troubleshooting: Print one copy of each of 1948 Setup pattern,
as shown in Section 3.3 and the grid test pattern, as shown in
Section 3.3. Also, ask the customer for print samples.
Inspect the prints and classify the image defect. Go to one of the
following procedures:
• Section 7.6.1, Vertical Deletions or White Bands
• Section 7.6.2, Horizontal Deletions or White Bands
• Section 7.6.3, Random or Localized White Spots
7.6.1 Vertical Deletions or White Bands
Description: Bands of white running across the sheet vertically,
from leading to trailing edge. Perform the classification procedure in
Section 7.6.
Troubleshooting: Suspect bad paper, consumables, paper path
damage, or light path obstructions: Perform the following procedure:
1. The toner might be damp and caked. Remove the developer
cartridge with toner cartridge installed. Gently rock and tap the
developer unit to evenly distribute the toner within the cartridge.
2. The paper might be damp. Try some dry paper from the center
of a fresh package.
3. Remove print cartridge and inspect the following areas:
• Look for any obstructions in the path of the laser beam or
erase LEDs (for example, dust or lint fibers).
• If you find moisture on the scanner window, make sure the
rear cooling fan is operational, as shown in Section 4.3.
If the window is scratched or stained, replace the scanner
assembly.
• Make sure there are no obstructions between the developer
and print cartridge.
4. Clean or swap the transfer/separation assembly.
7–8 Image Defects FIPs