Brother GT-3 Series Service Manual page 347

6. Replacing Parts
How to connect/disconnect the FFC Connector
FFC Connector can be disconnected by pulling out the "black plastic" claws at both ends at the same time.
Connect the FFC by inserting the FFC to the Socket and pushing in the both "black plastic" claws at the same
time.
<Note>
・ Make sure that the contact (metal side) of the FFC should be clean and safe, free of grease and damage.
・ Do not touch the contact (metal side) with your fingers.
4.
Remove the four Screws (7) that fix the Carriage PCB Assy.
(7)
5.
Remove the Carriage PCB Assy.
6.
Follow the reverse steps in reassembling.
338
(6)
GT-3 Series