HAKUBA 26PPM Laser Printer - Base Engine Technical Manual
5-15
Version 1.0
Primary FIPs:Image Quality Problems
5.8 Horizontal Streaks
PROBLEM
There are black lines running horizontally across the page.
INITIAL ANALYSIS
1. Inspect the following components. Are they compatible with your printer
version, correctly installed, not damaged, deformed, or contaminated?
• CRU
• PWBA HKB26 MCU
• PWBA HVPS
• Spring Clip
• BTR Assy
• BTR Chute Assy
• Heat Roll
• Pressure Roll Assy
• Fuser Assy
• ROS Assy
• Harness Assy Conn (J23-J231)• PWBA HKB PS
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
DRUM GROUND
Check the Drum Ground Path:
Drum>Drum Shaft Pin>Spring Clip > Frame.
Is the Drum Ground Path complete?
Go to step 2
Re-establish
the Drum
Ground Path
2
ROS
Assy
Use a sheet of paper to cover the laser beam window.
Generate a test print.
Is the problem still present?
Go to step 3
Go to 6.3
ROS Assy
Failure
3
BTR Assy
Inspect the
BTR Assy
for contamination.
Is the
BTR
free of contamination?
Go to step 4
Replace the
BTR Assy
4
CRU
FAILURE
Replace the
CRU
with a new one.
Is the problem solved?
Problem
solved
Go to step 5
5
HEAT ROLL Assy
Inspect the Heat Roll for scratches, objects, or contamination.
Is the Heat Roll free of scratches and contamination?
Go to step 6
Replace the
Heat Roll
6
NOISE
Go to 6.20 Electrical Noise for possible noise problem.
engine fip5006FA
Summary of Contents for b 6100
Page 1: ...HAKUBA 26PPM Laser Printer Base Engine Technical Manual Version 1 0...
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Page 124: ...8 2 HAKUBA 26PPM Laser Printer Base Engine Technical Manual Version 1 0 Diagnostic Mode...
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Page 148: ...9 2 HAKUBA 26PPM Laser Printer Base Engine Technical Manual Version 1 0 Adjustment Mode...
Page 152: ...9 6 HAKUBA 26PPM Laser Printer Base Engine Technical Manual Version 1 0 Adjustment Mode...
Page 396: ...12 26 Hakuba 26PPM Laser Printer Base Engine Technical Manual Version 1 0 Parts List...