Brother PT-1090 Service Manual page 27

(4) Release the three hooks, and open the bottom cover from the upper cover.
NOTE: Do not pull the bottom cover away from the upper cover. Those covers
are connected with the lead wires and the head flat cable.
(5) Disconnect the head flat cable from the main PCB ASSY.
(6) Remove the two screws, and remove the cassette sensor PCB ASSY from the
bottom cover.
(7) Unsolder the two motor leads from the main PCB ASSY.
CAUTION: When handling the PCBs, put on the grounding wrist band. Failure to
do so might break LSIs and other electronic devices.
Cassette sensor PCB ASSY
Bottom cover
Head flat cable
Main PCB ASSY
Figure 3.1-5 Separating the Bottom Cover and the Upper Cover
Soldering the motor leads
Screws
Motor
leads
Hook
Hook
III - 5
Motor lead (Red)
Motor lead (Black)
Main PCB ASSY
Hook
Upper cover