Brother GT-3 Series Service Manual page 342

6.
Remove the plastic Panel Upper Cover (4) on the top of the Panel Body Assy.
7.
Remove the four connectors on the Panel PCB Assy (5).
Hold the both ends to unlock the lock in disconnecting the FFC (CN4)
(5)
CN1
8.
Remove the four screws with the white collars together that fix the Panel PCB Assy (5).
9.
Replace the Panel PCB Assy (5) to the new one.
10. Follow the reverse steps in reassembling.
CN4
CN3
CN2
(5)
(6)
(4)
GT-3 Series
6. Replacing Parts
CN4
333