Comtech EF Data CDM-760 - Manual (Page 317)

Appendix F Revision 2
CDM-760 Advanced High-Speed Trunking Modem MN-CDM760
F–3
F.1.2.3 Field Upgrade Procedure
Do these steps:
Step Task
1 Turn off the CDM-760 and disconnect the modem’s power cord
from its power source.
Use the screwdriver to remove the chassis cover top and side
fasteners. Remove the cover from the CDM-760 chassis.
IMPORTANT: Be sure to retain the cover’s top and side
fasteners for re-assembly of the cover to the chassis once the
upgrade is complete.
2 Remove and set aside both PIIC slot faceplates from the
modem rear panel. They are no longer needed after this
upgrade.