HAKUBA 26PPM Laser Printer - Base Engine Technical Manual
5-19
Version 1.0
Primary FIPs:Image Quality Problems
5.12 Background
PROBLEM
There is toner contamination on all or part of the page. The contamination
appears as a very light gray dusting.
INITIAL ANALYSIS
1. Inspect the following components. Are they compatible with your printer
version, correctly installed, not damaged, deformed, or contaminated?
• CRU
• HVPS
• Spring Clip
• PWBA HKB26 MCU
• Harness Assy Conn
• PWBA HKB PS
• ROS Assy
• Fuser Assy
2. Inspect the printer paper path. Is it clear of foreign matter such as staples,
paper clips, and paper scrap?
Step
Actions and Questions
Yes
No
1
HVPS CR
Use a sheet of paper to cover the laser beam window.
Generate a test print.
Is the problem still present?
Go to step 2
Go to 6.19
PWBA HVPS
Failure
2
CRU
Install a new
CRU
.
Is the background still on the page?
Problem
solved
Go to step 3
3
FUSER GROUND PATH
Inspect the Fuser Ground Path within the Fuser Assy and from
the Fuser Assy to the Frame Ground.
Is the Fuser Ground Path functioning correctly?
Return to Ini-
tial Analysis
Re-establish a
fuser ground
path.
engine fip5010FA
Summary of Contents for b 6100
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