Brother P-touch QL-710W Service Manual page 31

(4) Turn the upper cover upside down, and then pull out the flat cable of the tape
sensor PCB ASSY from the guide of the upper cover.
Flat cable of the tape sensor PCB ASSY
Guide
Fig. 3.4-13 Disassembling the Upper Cover and the Under Cover (2)
(5) Turn the upper cover upside down, and then remove the two screws, and remove
the insert guide from the upper cover.
Fig. 3.4-14 Disassembling the Upper Cover and the Under Cover (3)
Screws
III - 12
Upper cover
Insert guide
Upper cover