Brother DSmobile DS-635 Online User's Manual page 136

Difficulties
Vertical band appears.
Color is different from normal.
The calibration sheet is too short.
Related Information
• Routine Maintenance
Cause
The scanner may have vibrated
during calibration.
• Dust on the paper path.
• Dust on the calibration sheet.
• Dust or fingerprint on the paper
path.
• Dust, fingerprint, or scratch on
the calibration sheet.
• An incorrect calibration sheet is
used.
• The temperature is too high or
too low.
• There is a problem with the
computer's USB port.
The calibration sheet has been cut
or inserted incorrectly.
Suggestions
Place the scanner on a flat, stable
surface and recalibrate.
• Clean the paper path and try to
scan again.
• Clean the paper path or
calibration sheet. And then
Recalibrate the scanner.
• Clean the paper path and try to
scan again.
• Clean the paper path or use a
new calibration sheet. And then
recalibrate the scanner.
• Recalibrate the scanner using
the correct calibration sheet.
• Recalibrate the scanner.
• Change to other USB port, and
then recalibrate the scanner.
Recalibrate the scanner using the
correct calibration sheet.
133