Yaesu FTM-400DR Operating Manual page 135

5
Carefully lift up the front side of the main body top
cover
Caution Do not lift up the top cover quickly by force. This
may damage the damage cables between the
speaker and main board.
6
Unplug the speaker cables extending from the top
cover to the connector on the board inside the main
body first before removing the cover
Caution Hold the connector when unplugging the cable
avoid pulling the cable itself.
7
Remove the two screws in the front of the main body
8
Lift the front hook in the center at the top first before
removing the front cover
9
Refer to the figure on the right to mount the BU-2
Caution Check the direction of the connector and plug the
BU-2 in all the way to the back.
10
Attach the main body front cover and secure using the two screws
11
Plug in the speaker cables extending from the main body top cover to the original
socket on the board
12
Attach the main body top cover and replace all eight screws
Using the Bluetooth Headset
Hook
Connector
for BU-2
135