Brother DCP-9055CDN Service Manual page 117

■ Error code A7
Scan Unable A7
See Troubleshooting and routine maintenance chapter in User's Guide.
Scanning color parameter file failure.
Error code A8
Scan Unable A8
See Troubleshooting and routine maintenance chapter in User's Guide.
Scanning color parameter error for recording the image.
Step
1 Document scanner unit failure
2 Main PCB failure
■ Error code A9
Scan Unable A9
An image signal cannot be detected when an image is scanned. Or, an image signal is too
dark.
Step
1 Document scanner unit failure
2 Main PCB failure
■ Error code AA
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ADF cover open detection error.
This error does not usually occur in the normal use. The conceivable causes are noise around
the installation site, fluctuation of the power supply voltage, and failures in the software.
<User Check>
- Turn OFF the power switch, and turn it ON again after a while.
Step
1 Main PCB failure
Cause
Cause
Cause
2-79
Remedy
Replace the document scanner unit.
Replace the main PCB ASSY.
Remedy
Replace the document scanner unit.
Replace the main PCB ASSY.
Remedy
Replace the main PCB ASSY.
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