Scanning Image Defect Troubleshooting; Image Defect Examples; Troubleshooting Image Defect - Brother 09055CDN 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, BC, etc)
Step
1
2
3
4
Light (2-131)
Faulty registration (2-132)
Vertical streaks (2-133)
Completely
blank (2-133)
<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
White level data failure
Document scanner unit
(First side) failure
Second side scanning CIS
failure
Main PCB failure
Dark (2-132)
White vertical
streaks (2-133)
Fig. 2-20
Perform the acquisition of white level data.
(Function code
Replace the document scanner unit (First
side).
Replace the second side scanning CIS.
Replace the main PCB ASSY.
2-131
Remedy
55)
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