Print Of The Scanning Document Is Light Or Dark; Vertical Streaks (White Or Black Vertical Streaks); Poor Fixing; Image Distortion - Brother DCP-7030 Service Manual

6.3

Print of the scanning document is light or dark

User Check
• Check if the ADF or FB glass is not stained.
Step
Setting of white
1 level scanning
area malfunction
FB unit failure
2
Main PCB failure Is the problem solved
3
6.4

Vertical streaks (White or Black vertical streaks)

User Check
• Check if the ADF or FB glass is not stained.
Step
Setting of white
1 level scanning
area malfunction
FB unit failure
2
6.5

Poor fixing

User Check
• Check if the ADF or FB glass is not stained.
Step
FB unit failure
1
6.6

Image distortion

Step
FB unit failure
1
Cause
Is the problem solved
after setting the white
level of scanning?
Is the problem solved by
replacing the FB unit?
after replacing the main
PCB ASSY?
Cause
Is the problem solved
after setting the white
level of scanning?
Is the problem solved by
replacing the FB unit?
Cause
Is the problem solved by
replacing the FB unit?
Cause
Is the problem solved by
replacing the FB unit?
Check Result
Yes
Yes
Yes
Check Result
Yes
Yes
Check Result
Yes
Check Result
Yes
1-44
Remedy
Set the white level
scanning area. (Function
code 55)
Replace the FB unit.
Replace the main PCB
ASSY.
Remedy
Set the white level
scanning area. (Function
code 55)
Replace the FB unit.
Remedy
Replace the FB unit.
Remedy
Replace the FB unit.
Confidential