Specifications

Chapter 6: FRU Replacement and Fault Isolation Procedures
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6.4.1 Light prints
NOTES
:
1. Without the Diagnostic tool, skip the Diagnostic Tool test (DG) portion of step 4.
2. There is no corresponding control panel message
3. This FIP may also fix poor transfer charge.
4. Try another toner cartridge
PROBLEM
The overall image density is lighter than normal.
INITIAL ANALYSIS
Inspect the following components. Are they compatible with your printer version, correctly
installed, not damaged, deformed, or contaminated?
Toner Cartridge HVPS
BTR Assembly Earth Plate Assembly
Wire Assembly TR Fuser Assembly
MCU PWB Harness Assembly HVPS
LVPS Assembly ROS Assembly
Transportation Chute Assembly
Inspect the printer paper path. Is it clear of foreign matter, such as staples, paper clips, and
paper scrap?
1. PAPER CONDITIONS
Is there moisture in the paper?
Yes No
Load new paper. Go to Step 2.
2. DRUM GROUND
Check the Drum Ground Path:
Drum>Pin at end of drum shaft>Earth Plate Assembly>Harness Assembly
HVPS>MCU PWB>LVPS Assembly Frame.
Is the Drum Ground Path functioning correctly?
Yes No
Go to Step 3. Connect the Drum Ground Path correctly.
3. LASER BEAM PATH
Inspect the laser beam path, between the ROS Assembly and the Drum, for contamination or
obstructions.
Is the laser beam path free of obstacles?
Yes No
Go to Step 4 Remove obstructions or contamination from the laser beam path.