Specifications

Chapter 6: FRU Replacement and Fault Isolation Procedures
6-97
6.4.8 Horizontal streaks
NOTES
:
1. Without the Diagnostic tool, skip the Diagnostic Tool test (DG) portion of steps 2 and 3.
2. There is no corresponding control panel message for this item.
3. This FIP may also fix BTR, fuser, or drive gears.
4. Try another toner cartridge
PROBLEM
There are black lines running horizontally across the page.
INITIAL ANALYSIS
Inspect the following components. Are they with your printer version, correctly installed,
not damaged, deformed, or contaminated?
Toner Cartridge BTR Assembly
MCU PWB Fuser Assembly
ROS Assembly Transportation Chute Assembly
HVPS Wire Assembly TR
LVPS Assembly Earth Plate Assembly
Harness Assembly HVPS
Inspect the printer paper path. Is it clear of foreign matter, such as staples, paper clips, and
paper scraps?
1. DRUM GROUND
Inspect 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. HVPS CR (DC)
Use Diagnostic Tool Test DG92 to check if the HVPS is supplying –350VDC to
the BCR.
Is the output voltage correct?
Yes No
Go to Step 3. Go to Section 6.3.19 HVPS CR Failure.
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.