Yaesu FTM-100DR Operating Manual page 152

Using the Bluetooth headset
5
Gently lift up the top cover of the transceiver
from the rear side.
Caution Do not abruptly open the top cover. Doing so
may break the cable connecting the internal
speaker to the main board.
6
Unplug the speaker cable from the socket on
the main board to completely remove the top
cover from the transceiver.
Caution When unplugging the speaker cable, do not
pull the cable. Be sure to hold the connector
part.
7
Remove the 2 screws from the front panel.
8
Release the latch at the center of the cover to
remove the front cover.
9
Refer to the illustration on the right to plug BU-2
to the connector.
Caution Check the direction of the connector and plug
BU-2 all the way into the connector.
10
Attach the front cover using the 2 screws.
152
Latch
Connector
for BU-2