Troubleshooting For Image Defects; Defect Examples; Troubleshooting According To Image Defect - Brother ADS-2000 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
Incorrect white level correction data Execute the maintenance mode function
1
First side or second side CIS unit
2
failure
3 Main PCB failure
Faulty registration
Vertical streaks
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
"Acquire white level data and set CIS scan
area".
Replace the first side or second side CIS
unit.
Replace the main PCB ASSY.
Dark or
bluish white
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