Troubleshooting For Image Defects; Defect Examples; Troubleshooting According To Image Defect - Brother ADS-1000W Service Manual

4.2

Troubleshooting for Image Defects

4.2.1 Defect examples

Light
Completely
blank
Hue defect

4.2.2 Troubleshooting according to image defect

 Light
Step
First side or second side CIS unit
1
failure
2 Main PCB failure
Faulty registration
Vertical streaks
Expanded image
Fig.2-5
<User Check>
• Check that the contrast setting is not too light.
• Clean the CIS glass.
Cause
2-17
White vertical
streaks
Remedy
Replace the first side or second side CIS
unit.
Replace the main PCB ASSY.
Dark or
bluish white
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