2 ] Scanner Mechanism - Brother MFC5490CN Service Manual

[ 2 ] Scanner mechanism

Defective component
CIS unit
CIS flat cable
Scanner drive unit
- Any of the following images may appear on the printout:
- When the power is turned on, abnormal noises will be
heard from the machine.
- Any of the following errors occurs:
- Dark level offset data level error for scanning
- Gain control data level error for scanning
- Scan area right/left edge detection error
- Horizontal scanning edge reduction/enlargement
detection error in scanning area setting
- White/black level data error
- Scan starting edge detection error
- When the power is turned on, the "Init Unable AF"
appears on the LCD.
- When the power is turned on, abnormal noises will be
heard from the machine.
4-46
Result Error codes
BD, AF
AF
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