Brother DS-720D User's Guide Page 50

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  • TROUBLESHOOTING
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Troubleshooting
45
8
Troubleshooting
Scanning difficulties
Calibration failed. Please reboot the
machine.
An error caused the calibration to fail.
For example, the Calibration Sheet is
not inserted in the correct direction.
Remove the Micro USB Cable
from your computer. Reconnect
the Micro USB Cable to the
computer, and perform the
calibration again.
Insert the Calibration Sheet in the
correct direction.
For Windows
®
: to perform the
calibration using software, see
Calibration using software (for
Windows
®
) on page 37.
For Macintosh: to perform the
calibration using software, see
Calibration using software (for
Macintosh) on page 40.
Difficulty Cause Suggestions
My scanner does not
turn on.
The supplied Micro USB Cable is not
connected securely.
Make sure the Micro USB Cable is securely
connected to your scanner and computer.
My computer does not
recognize the scanner
when it is connected
via the Micro USB
Cable.
Causes may vary. Make sure the Micro USB Cable is securely
connected to your scanner and computer. Remove
the Micro USB Cable and reconnect the Micro USB
Cable to your scanner and computer.
My scanned images
have black lines
running through them,
blank spaces, or are of
overall bad quality.
This problem occurs if the scanner is
not calibrated correctly or if a foreign
object, such as a paper clip or ripped
paper, is stuck in the scanner.
1. Check the document feeder slot and make sure
that the slot is clear. If foreign objects are found,
remove them from your scanner.
2. Calibrate your scanner (see Scanner Calibration
on page 37).
If scan quality is not improved after you calibrate
your scanner:
1. Clean the scanner (see Scanner Maintenance on
page 42).
2. Calibrate your scanner again.
Error message Cause Action
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