Vaisala LT31 - Replacing Optional Modem DMX501; Figure 118 DMX501

User's Guide ______________________________________________________________________
204 _________________________________________________________________ M210667EN-C
0401-167
Figure 117 LTC212
CAUTION
Handle the board carefully. Do not touch the components on the board to
avoid ESD damage to them. Ground yourself before attempting to touch
the board.
CAUTION
Do not let the board get wet.
5. Push the replacement LTC212 board back to its place and attach
the two screws securing it into the correct position.
6. Attach the cover plate by tightening the four screws holding it.
7. Insert the connectors onto the LTC212 board and note their correct
order (refer to the numbers on the cover plate).
8. Turn on the AC power switch (and also the battery backup switch,
if installed).
9. Close the interface unit and mount the upper interface unit cover
after replacing is finalized.
Replacing Optional Modem DMX501
Optional modem DMX501 is shown in Figure 118 below.
0401-106
Figure 118 DMX501