Brother PDS-5000 Service Manual page 38

 Faulty registration
Step
OD adjustment value failure
1
Main PCB failure
2
 Dark
Step
OD adjustment value failure
1
Attachment failure of the spring in
2
second side glass ASSY
First side LED light PCB or second
3
side LED light PCB failure
First side CCD unit or second side
4
CCD unit failure
Main PCB failure
5
 Completely blank
Step
Connection failure of the first side
1
or second side CCD flat cable
First side LED light PCB or second
2
side LED light PCB failure
First side CCD unit or second side
3
CCD unit failure
Main PCB failure
4
<User Check>
- Check that the document scanning position setting is
not deviated.
Cause
<User Check>
- Check that the contrast setting is not too dark.
Cause
<User Check>
- Check that the document is not reversed.
Cause
2-19
Remedy
Acquire OD adjustment value. (Refer to
OD Adjustment (Optical Density Learning)"
in Chapter 4.)
Replace the main PCB ASSY.
Remedy
Acquire OD adjustment value. (Refer to
OD Adjustment (Optical Density Learning)"
in Chapter 4.)
Reattach the spring in the second side glass
ASSY.
Replace the first side LED light PCB or
second side LED light PCB.
Replace the first side CCD unit or second
side CCD unit.
Replace the main PCB ASSY.
Remedy
Reconnect the first side or second side CCD
flat cable.
Replace the first side LED light PCB or
second side LED light PCB.
Replace the first side CCD unit or second
side CCD unit.
Replace the main PCB ASSY.
"3.1
"3.1
Confidential