Troubleshooting For Image Defects; Defect Examples; Troubleshooting According To Image Defect - Brother DCP-L5500D Service Manual

4.12 Troubleshooting for Image Defects

4.12.1 Defect examples

Light (2-118)
Vertical streaks (2-120)

4.12.2 Troubleshooting according to image defect

 Light
Step
Incorrect white level correction data Execute "Acquire white level data
1
2 First or second side CIS unit failure Replace the first or second side CIS unit.
3 Main PCB failure
Faulty registration (2-119)
White streaks
(2-121)
<User Check>
• Check that the contrast setting is not too light.
• Clean the scanner glass or first side/second side scanner glass
strip.
• Clean the document hold.
Cause
Dark (2-119)
Partially shaded
(2-121)
Fig. 2-18
code: 55)".
Replace the main PCB ASSY.
2-118
Completely All black
blank (2-120) (2-120)
Fully tinged (2-121)
Remedy
(function
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