Scanning Image Defect Troubleshooting; Image Defect Examples; Troubleshooting Image Defect - Brother DCP-7055 Service Manual

3.10 Scanning Image Defect Troubleshooting

3.10.1 Image defect examples

3.10.2 Troubleshooting image defect

■ Light on the page (Error code BB, etc)
Step
White level data malfunction
1
2 Document scanner unit failure
3 Main PCB failure
Light (2-96) Faulty registration (2-97)
Completely blank Vertical streaks (2-98)
(2-98)
User Check
• Check whether the setting of the contrast does not become light.
• Clean the document table glass or ADF glass.
• Clean the CIS glass of the ADF.
Cause
Fig. 2-14
Perform the acquisition of white level data.
("Function code
Replace the document scanner unit.
Replace the main PCB ASSY.
2-96
Dark (2-97)
White vertical
streaks (2-98)
Remedy
55")
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