
MDE-4504 Site Controller II CPU/Memory Board/Program Upgrade Instructions · August 2005 Page 7
Installing a New CPU Board Upgrading
3 – Upgrading
This section provides information on:
• Installing a new CPU and memory board
• Installing new software
Installing a New CPU Board
To install a new CPU board, proceed as follows:
1 Turn off the power, and unplug the Site Controller.
2 Remove the four Phillips screws from the sides of the Site Controller, and remove the cover.
3 Disconnect all cables going to the CPU board (top board), and make a note of each cable and
its corresponding connector.
4 Remove the Phillips screws that secure the Site Controller CPU board, and carefully remove
the board.
5 Set the jumpers on the new CPU board to match the site's configuration. Refer to Figure 3-1, to
set up the CPU board.
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