Troubleshooting Of Scannig; Cannot Scan The Document In The Fb Unit; (If Scan The Document, It Is Completely White Or Black.); Cannot Scan The Document In The Adf Unit - Brother DCP-7030 Service Manual

6.

TROUBLESHOOTING OF SCANNIG

6.1

Cannot scan the document in the FB unit.

(If scan the document, it is completely white or black.)

User Check
• Check if there is the scanning surface of the FB unit scanning document in the lower
side.
Step
Document front
actuator not
1 operating
smoothly or
catching
Each harnesses
of FB unit
2
connection
failure
FB unit failure
3
Main PCB failure Is the problem solved
4
6.2

Cannot scan the document in the ADF unit.

(If scan the document, it is completely white or black.)
User Check
• Check if there is the scanning surface of the ADF unit document in the upper side.
Step
Each harnesses
of FB unit
1
connection
failure
FB unit failure
2
Main PCB failure Is the problem solved
3
Cause
Does document front
actuator move
smoothly?
Is the each harnesses of
FB unit connected
securely?
Is the problem solved by
replacing the FB unit?
after replacing the main
PCB ASSY?
Cause
Is the each harnesses of
FB unit connected
securely?
Is the problem solved by
replacing the FB unit?
after replacing the main
PCB ASSY?
Check Result
No
Yes
Yes
Yes
Check Result
No
Yes
Yes
1-43
Remedy
Re-assemble the
document front actuator.
Reconnect the each
harnesses of FB unit.
Replace the FB unit.
Replace the main PCB
ASSY.
Remedy
Reconnect the each
harnesses of FB unit.
Replace the FB unit.
Replace the main PCB
ASSY.
Confidential