HAKUBA 26PPM Laser Printer - Base Engine Technical Manual
5-7
Version 1.0
Primary FIPs:Image Quality Problems
5.2 Blank Prints
PROBLEM
The entire print is blank.
INITIAL ANALYSIS
1. Inspect the following components. Are they compatible with your printer
version, correctly installed, not damaged, deformed, or contaminated?
• CRU
• PWBA HVPS
• BTR Assy
• ROS Assy
• P/H Assy
• PWBA HKB26 MCU
• Harness Assy Conn (J23-J231)
• PWBA HKB PS
• Fuser Assy
• Cover Assy Front
• Harness Assy Fuser (J271, J11, J27, J262)
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
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 3
Remove
obstructions
or contamina-
tion.
3
BTR ASSY
Inspect the
BTR Assy
for contamination.
Is the
BTR
free of contamination?
Go to step 4.
Replace the
BTR Assy
4
IMAGE TRANSFER PROCESS FAILURE
Generate a test print and switch OFF printer power halfway
through the print cycle.
Remove the
CRU
and inspect the image on the drum.
Was the image on the drum transferred to the paper?
Go to step 5
Go to 6.19
PWBA HVPS
Failure
Summary of Contents for b 6100
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