Specifications

Chapter 6: FRU Replacement and Fault Isolation Procedures
6-88
6.4.2 Blank prints
NOTES
:
1. Without the Diagnostic tool, skip the Diagnostic Tool test (DG) portion of steps 3 and 4.
2. There is no corresponding control panel message.
3. This FIP may also fix poor development bias
4. Try another toner cartridge
PROBLEM
The entire print is blank
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 ROS Assembly
MCU PWB Harness Assembly HVPS
LVPS Assembly Transportation Chute Assembly
Inspect the printer paper path. Is it clear of foreign matter, such as staples, paper clips, and
paper scraps?
1. 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 2. Connect the Drum Ground Path correctly.
2. 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 3. Remove obstructions or contamination from the laser beam path.
3. HVPS (DB)
Use Diagnostic Tool Test DG93 to check if the HVPS is supplying –250VDC to
the Magnet Roll.
Is the output voltage correct?
Yes No
Go to Step 4 Go to Section 6.3.20 HVPS DB Failure.