Clear-Com HX System Frames - Manual (Page 27)

3. Ensure that the checksum of the programmed device matches the checksum in the
Eclipse HX Release Notes.
4. Remove the existing PROM device from the CPU card.
5. Insert the newly programmed PROM device, taking care to ensure the correct polarity of the
device.
5.2 Changing the CPU card RAM
Important note:
When you change the CPU card RAM (from 128Mb RAM to 256Mb RAM), you must also change the
CPU card PROM. See 5.1 Changing the CPU card PROM above.
To change the CPU card RAM (from 128Mb to 256Mb):
1. Ensure that you have the replacement 256Mb CPU card RAM to hand.
2. Remove the CPU card from the Eclipse HX-Median, Eclipse HX-Omega or Eclipse HX-Delta
matrix.
3. The cassette that holds the CPU card RAM daughter board is located towards the center of
the main board:
Figure 9: CPU card 128Mb RAM daughter board
To release the 128Mb RAM daughter board, push back the levers to either side of the
cassette. Remove the board.
20 Eclipse HX Upgrade Guide