Brother ADS-1000W Service Manual page 42

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 Vertical streaks
Step
First side or second side CIS unit
1
failure
 White vertical streaks
Step
First side or second side CIS unit
1
failure
 Hue defect
Step
First side or second side CIS unit
1
failure
2
Main PCB failure
<User Check>
• Clean the CIS glass.
• Clean the document pressure bar.
Cause
<User Check>
• Clean the CIS glass.
• Clean the document pressure bar.
Cause
Cause
2-19
Remedy
Replace the first side or second side CIS
unit.
Remedy
Replace the first side or second side CIS
unit.
Remedy
Replace the first side or second side CIS
unit.
Replace the main PCB ASSY.
Confidential

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