Siemens FC430 Upgrade Instructions page 7

④
Remove the screw that holds the DSL cassette.
⑤
Carefully remove DSL cassette from housing.
⑥
Remove the connector and mount the one supplied with the new DSL cassette.
Note: Make sure to connect the wires as shown in the next table.
Terminal number
1
2
3
4
FC430 upgrade instructions - Remote
A5E33338888-AG, 06/2016
Description
24 V DC
0 V
B
A
Wire color (Siemens cable)
Orange
Yellow
White
Blue
7