Do not work on CMA with 120 Vac power on. Always work with another person
nearby who is familiar with hazards of electronic equipment and is competent in
administering first aid. Failure to obey this warning could result in death or injury.
Unlock and open rear access door (1).
Tag and disconnect RX-TX cable assembly (2) from I/O Card (3).
Tag and disconnect RX-TX cable assembly (4) from backplanes.
Remove RX-TX cable assembly.
Connect RX-TX cable assembly (4) to backplanes and remove tags.
Connect RX-TX cable assembly to I/O Card (3) and remove tags.
Close and lock rear access door (1).