5-10 Phaser 6128MFP Service Manual
Print-Quality Troubleshooting
Blank Print
The entire image area is blank.
Initial Actions
• Check the paper transfer path.
• Run the Engine Test print to help isolate the problem between the Image
Processor Board and the MCU Board
• Check for obstructions or debris in the beam path between the Laser and the
Imaging Units.
• Ensure there are no debris on the transfer path.
19 Replace the Imaging Unit.
(page 8-8)
Is the image printed correctly?
Complete Go to step 20.
20 Replace the Dispense Assy
(page 8-91).
Is the image printed correctly?
Complete Go to step 21.
21 Replace the Laser Unit. (page 8-98)
Is the image printed correctly?
Complete Replace the IP
Board
(page 8-41)
Troubleshooting Reference Table
Applicable Parts Example Print
■ Laser Unit Kit (PL4.1.99)
■ Imaging Unit (PL4.1.21)
■ Dispense Assy (PL5.1.1)
■ 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)
■ Sub Drive Assembly (PL7.1.1)
■ Main Drive Assembly (PL7.1.2)
■ Feed Drive Assembly (PL7.1.4)
■ IP Board (PL10.6.6)
■ MCU Board (PL10.7.7)
Troubleshooting Procedure Table (continued)
Step Actions and Questions Yes No
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