Comtech EF Data SMS-301 - Manual (Page 81)

SMS-301 Redundancy Switch Maintenance
Rev. 3 5-3
5.2 Test Points and LEDs
Test points and LEDs are included on the M&C board for quick troubleshooting
references. LEDs are visual references. Test points are used when additional
troubleshooting is required.
Refer to Table 5-1 for a list of LEDs and their functions.
Table 5-1. LED Functions
Function Color
Demodulator A On-line Green
Demodulator B On-line Green
Modulator A On-line Green
Modulator B On-line Green
Transmit Fault Red
Receive Fault Red
System Fault Red
Stored Fault Yellow
Power Supply 1 Green
Power Supply 2 Green
Auto Mode Green
Manual Mode Yellow