Brother GT-3 Series Service Manual page 143

6. Replacing Parts
Reduction Belt
1.
Loosen the four Bolt Sockets (1).
2.
Loosen the Nut 2 M4 (2) and adjust the Bolt Socket (3) by checking the tension with the belt tension
meter.
<Note> Move the Platen Arm at the rearmost position and check the tension at the left side of the Belt, by
flipping it with your finger.
・The tension increases by turning the Bolt Socket clockwise.
・The tension decreases by turning the Bolt Socket counter-clockwise.
3.
Screw the Nut 2 M4 (2) and the two Bolt Sockets (1), load and unload the Platen by hand to make it move
smooth, and then check the tension again.
<Note> Repeat the steps 1 to 3 if the tension is out of the reference value.
4.
Connect the connector from the Platen Motor to the Main PCB.
134
(1)
(3)
(2)
GT-3 Series
Flipping point