Iq Rap 12 Uneven Density - Xerox DocuPrint N2025 Service Manual

IQ RAP 12 Uneven Density

Image density varies within the page in either direction (Figure 1).
Figure 1 Uneven Density
Initial Actions
• Load fresh dry paper.
• Check that the correct Print Cartridge is properly installed and not empty.
• Ensure that the machine is reasonably level.
• Check to make sure the Laser path is clean and unobstructed.
• Remove the Print Cartridge and check the Left and Right Guides for ware, contamination,
obstructions, etc.
• Clean the Laser window.
Procedure
Run a Test Print. The Test Print output image contains uneven print.
Y N
Go to 1.5 Final Actions.
Install a new Print Cartridge (PL 8.1). Run a Test Print. The Test Print output image con-
tains uneven print.
Y N
Problem solved. Go to 1.5 Final Actions.
Check the Bias Transfer Roll (BTR) for contamination, even spring pressure, and proper instal-
lation. The BTR is in good condition (not contaminated) and properly installed.
Y N
Repair or replace the BTR Assembly (REP 7.7).
Check the Fuser Assembly for worn parts and for contamination on the Fuser Roll or Pressure
Roll. The Fuser Assembly is in good condition.
Y N
Replace the Fuser Assembly (REP 5.1).
A
Initial Issue
DocuPrint N2025/N2825
A
Panic stop the printer half way through the print cycle. Look at the image on the drum. The
image on the drum has even density.
Y N
Replace the Laser Assembly (REP 7.1).
Look at the print on the paper before the Fuser. The print on the paper has even density.
Y N
Replace the BTR (REP 7.7).
Replace the Fuser Assembly (REP 5.1).
02/2000
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Image Quality Repair Analysis Procedures
IQ RAP 12