Brother GT-3 Series Service Manual page 213

6. Replacing Parts
Reconfirmation
1.
Turn ON the printer and select [ Output Check ] > [ Wiper Test ] in the Advanced Menu. (Refer to "3-1-3.
How to go to Advanced Menu" and "3-1-5-3. Output Check".)
2.
Move the Carriage out of the Maintenance Unit by hand when the Caps are down, and confirm that the
Wiper should move [ to Center ] or [ to Both Ends ] properly.
3.
Push the Stop Button to move the Carriage to the home position and turn OFF the printer.
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GT-3 Series