5-14
HAKUBA 26PPM Laser Printer - Base Engine Technical Manual
Version 1.0
Primary FIPs:Image Quality Problems
5.7 Vertical Streaks
PROBLEM
There are black lines running vertically along 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
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
LASER BEAM PATH
Inspect the laser beam path, between the
ROS Assy
and the
Drum, for contamination or obstructions.
Is the laser beam path free of obstacles?
Go to step 2
Remove
obstructions
or contamina-
tion.
2
BTR Assy
Inspect the
BTR Assy
for contamination.
Is the
BTR
free of contamination?
Go to step 3
Replace the
BTR Assy
3
INCOMPLETE DISCHARGE PROCESS
Remove the
CRU
and leave the
Cover Assy Front
open.
Cheat the
Switch Assy I/L Front
and run MAIN MOTOR TEST.
Does the
BTR
function normally?
Go to Step 4
Replace the
BTR Chute
Assy
4
CRU
FAILURE
Replace the
CRU
with a new one.
Is the problem solved?
Problem
solved
Go to step 5
5
HEAT ROLL DAMAGE
Do the streaks occur at intervals of approximately 104
mm?
Replace the
Heat Roll
Return to Ini-
tial Analysis
engine fip5005FA
Summary of Contents for b 6100
Page 1: ...HAKUBA 26PPM Laser Printer Base Engine Technical Manual Version 1 0...
Page 8: ...viii HAKUBA 26PPM Laser Printer Base Engine Technical Manual Version 1 0 Blank Page...
Page 124: ...8 2 HAKUBA 26PPM Laser Printer Base Engine Technical Manual Version 1 0 Diagnostic Mode...
Page 146: ...8 24 HAKUBA 26PPM Laser Printer Base Engine Technical Manual Version 1 0 Diagnostic Mode...
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...