Chapter 4 _______________________________________________________________ Installation
VAISALA _______________________________________________________________________ 83
To do this, follow the instructions below:
1. Turn the AC power switch off and also the battery backup switch,
if installed.
0401-146
Figure 40 AC and Battery Backup Switch
2. Disconnect all the connectors from the LTC212 board.
3. Open the four screws holding the cover plate and remove it (see
Figure 41 on page 84).
4. Open the two screws holding the LTC212 board in place and
withdraw the board carefully.
5. Remove the DMX501 modem module from its protective package
and install it by pressing it gently into the module place of the
LTC212 board (see Figure 41 on page 84).
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