Brother MFC-7390

2-111
Confidential
 Vertical streaks
 White streaks
<User Check>
• Clean the scanner glass or first side/second side
scanner glass strip.
• Clean the document hold.
Step Cause Remedy
1 Dirt inside of scanner glass Clean the inside of the scanner glass.
2
Dirt inside of first side/second
side scanner glass strip
Clean the inside of the first side/second side
scanner glass strip.
3
First or second side CIS unit
failure
Replace the first or second side CIS unit.
4 Scratch on scanner glass Replace the document scanner unit.
5
Scratch on second side
scanner glass strip
Replace the ADF unit.
<User Check>
• Clean the scanner glass or first side/second side scanner glass strip.
• Clean the document hold.
Step Cause Remedy
1 Dirt inside of scanner glass Clean the inside of the scanner glass.
2
Dirt inside of first side/second
side scanner glass strip
Clean the inside of the first side/second side
scanner glass strip.
3
First or second side CIS unit
failure
Replace the first or second side CIS unit.
4 Scratch on scanner glass Replace the document scanner unit.
5
Scratch on second side
scanner glass strip
Replace the ADF unit.