Service manual

2-96
Confidential
3.10 Scanning Image Defect Troubleshooting
3.10.1 Image defect examples
Fig. 2-14
3.10.2 Troubleshooting image defect
■ Light on the page (Error code BB, etc)
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.
Step Cause Remedy
1
White level data malfunction Perform the acquisition of white level data.
("Function code 55")
2 Document scanner unit failure Replace the document scanner unit.
3 Main PCB failure Replace the main PCB ASSY.
Light (2-96)
White vertical
streaks (2-98)
Vertical streaks (2-98)Completely blank
(2-98)
Faulty registration (2-97)
Dark (2-97)