Brother ImageCenter ADS-2800W, Service Manual

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2-20
Confidential

Vertical streaks
 White vertical streaks
 Hue defect
<User Check>
- Clean the CIS glass.
- Clean the feeding path.
Step Cause Remedy
1
First side or second side CIS unit
failure Replace the first side or second side CIS
unit.
<User Check>
- Wipe the first and second side CIS glass four times in the same
direction with a cleaning cloth.
- Clean the feeding path.
Step Cause Remedy
1
First side or second side CIS unit
failure Replace the first side or second side CIS
unit.
<User Check>
- Clean the document glass or CIS glass.
Step Cause Remedy
1
Color parameter failure Execute the maintenance mode function
"Acquire white level data and set CIS scan
area". (Refer to
"1.3.12" in Chapter 5 .)
2
Dirty calibration sheet Replace the calibration sheet with a new
one.
3
First side or second side CIS unit
failure Replace the first side or second side CIS
unit.
4 Main PCB failure Replace the main PCB ASSY.