Panasonic KX-TDA600

3. Turn the 2 screws clockwise to fix the BUS-M card in place.
Screws
4. Plug the Bus Cable into the bottom port of the BUS-M card in the Basic Shelf. Then, plug the other end
into the BUS-S card in Expansion Shelf 1.
Note
When plugging or unplugging the Bus Cable, make sure that the DC power supply is turned off.
For Expansion
Shelf 1
Bus Cable
58 Installation Manual
2.2.5 Installation of Basic System or 2-shelf System (Floor Standing)