Comtech EF Data SMS-301 - Manual (Page 80)

Maintenance SMS-301 Redundancy Switch
Rev. 3 5-2
Remove and replace U30 and/or U32 on printed circuit assembly as follows:
C AU TIO N
When replacing the 1:1 switch software, the previous switch configuration
and loaded modem configurations will be lost.
1. Disconnect power supply from the 1:1 switch.
2. Disconnect and remove 1:1 switch from equipment rack.
3. Remove top cover fasteners and cover.
4. Remove and replace U30 and/or U32 on printed circuit assembly, AS/5950. U30
and U32 are socketed devices.
5. Replace cover and fasteners.
6. Position and reconnect the 1:1 switch in rack.
7. Reconnect power supply to the 1:1 switch.
8. Enter desired 1:1 switch configuration.
9. Load all modems from Load/Verify menu or remote terminal.
10. Resume Auto mode as required.