Xerox Phaser 6128MFP - Horizontal Band, Voids, or Streaks

5-18 Phaser 6128MFP Service Manual
Print-Quality Troubleshooting
Horizontal Band, Voids, or Streaks
There are areas of the image that are extremely light or are missing entirely. These
missing areas form wide bands which cover a wide area horizontally, perpendicular
to the paper feed direction.
Initial Actions
• Check the paper transfer path.
• Ensure there are no debris on the transfer path.
Troubleshooting Reference Table
Applicable Parts Example Print
■ Laser Unit Kit (PL4.1.99)
■ HVPS Board (PL4.1.19)
■ Imaging Unit (PL4.1.21)
■ Toner Cartridge K (PL5.1.21)
■ Toner Cartridge C (PL5.1.22)
■ Toner Cartridge M (PL5.1.23)
■ Toner Cartridge Y (PL5.1.24)
■ Transfer Belt (PL6.1.7)
■ IP Board (PL10.6.6)
■ MCU Board (PL10.7.7)
Troubleshooting Procedure Table
Step Actions and Questions Yes No
1 Run the Contamination Check test
print: Service Mode > Test Print >
Contamination Chk
Compare any defects with the Pitch
Chart (page 5-51).
Do any of the horizontal bands
match the chart?
Replace the
corresponding
parts
Go to step 2.
2 Check the paper condition
Is the paper dry and approved for
use?
Go to step 4. Replace with
dry, approved
paper, then go
to step 3.
3 Is the image printed correctly? Complete Go to step 4.
4 Inspect the transfer belt surface.
Is there any damage to the belt?
Replace the
Transfer Belt
(page 8-103).
Go to step 5.
Horizontal Band, Void, or Streaks