No communication after installing replacement MDC controller
Potential Symptoms
- No communication after replacing MDC controller.
- Loopback passed at TB42 IN on both sides (bottom twisting wires together; top using jumpers/conductor).
Environment
- AF-3010
- Serial Radios
Cause
- W1 & W2 jumped for modem communication.
Resolution
-
Disconnect or unjump W1 & W2 (should only be jumped when modem communication is being used).
- Jumpers should be in open position for serial radio or normal rs232/rs422 communication.
- Jumpers should be in closed position when using a modem.
KB ID: DD2219938
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