User guide

Replacing the DSP/CPU Board
4-70 72A-1230 Rev. F
July 22, 2005
Replacing the DSP/CPU Board
Note the location of the DSP/CPU Board in Figure 4.24 on page 4-49 and in
Figure 4.36 below. Take the following steps to replace it:
1. If it has not already been done, remove the card cage cover. See
”Removing the Card Cage Cover” on page 4-48. The DSP CPU Board
will be visible as in Figure 4.36.
Figure 4.36 DSP/CPU Board
NOTE Do not remove the replacement board from its anti-static bag until
instructed to do so. See the Note on page 4-48 for additional ESD
precautions.
2. Detach the ribbon cable (W5) from the board.
3. Use your index fingers to unlatch both PC board extractors. Then, pull the
board straight up.
4. Remove the replacement DSP/CPU Board from its anti-static bag and
guide it into the slot. Press down evenly on the insides of the PC extractors
until the board is firmly seated.
connectors, lowvolt. power supply
DSP/CPU Board