Calibrate your scanner only if the scanned images start to look fuzzy, the color looks abnormal (darker than normal), or if the scanner has been stored without being used for a long time.

1. (DSmobile DS-940DW) Slide the Mode Select Switch to (USB mode) or (Wi-Fi mode).
2. Do one of the following:
   • Windows
     Click (Brother Utilities) on your desktop, and then click the drop-down list and select your model name (if not already selected). Click Tools in the left navigation bar, and then click Remote Setup.
   • Mac
     In the Finder menu bar, click Go > Applications > Brother, select your model name and then double-click the Remote Setup icon.

   (DSmobile DS-940DW)
   When your machine is connected via a Network, type the password if required. If you have not previously set your own password, type the default login password.
   The default login password to manage machine settings is either:

   • the password located on the back or bottom of the machine preceded by "Pwd"
     OR
   • initpass

   If the password is entered incorrectly three times, you will not be able to log in for three minutes.

3. Click the Machine Info menu in the left navigation pane.
4. Click the Start button in the Calibration option.
5. Click OK.
6. Hold the edges of the calibration sheet (supplied with the scanner) and insert it into the Feeder Slot as shown below.
   

   Hold only the edges of the calibration sheet and be careful not to touch the white or black areas. Leaving marks or fingerprints on this sheet can cause errors in calibration.

7. Click OK in the Remote Setup window.
   The scanner starts feeding the calibration sheet, and then the calibration result appears on the computer screen.
   If there is a problem with the calibration results, try the following solutions:

   Difficulties	Cause	Suggestions
   Lines appear.	Offset problem.	Recalibrate the scanner.
   Vertical line appears.	Dust on the paper path. Dust on the calibration sheet.	Clean the paper path and try to scan again. Clean the paper path or calibration sheet. And then Recalibrate the scanner.
   Vertical band appears.	Dust or fingerprint on the paper path. Dust, fingerprint, or scratch on the calibration sheet.	Clean the paper path and try to scan again. Clean the paper path or use a new calibration sheet. And then recalibrate the scanner.
   Color is different from normal.	An incorrect calibration sheet is used. The temperature is too high or too low. There is a problem with the computer's USB port.	Recalibrate the scanner using the correct calibration sheet. Recalibrate the scanner. Change to other USB port, and then recalibrate the scanner.
   The calibration sheet is too short.	The calibration sheet has been cut or inserted incorrectly.	Recalibrate the scanner using the correct calibration sheet.

    

8. When the Remote Setup displays a confirmation message, click OK.