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can't use PAD to power on the codec at TP3106

Publication Date:  2014-07-14 Views:  72 Downloads:  0
Issue Description
xx project. custom feedback he can't use PAD to power on the Codec.but he can power off the codec. 
Alarm Information
Handling Process
1. check the logs of the codec.
codec was normal power off and power on.
2. check the cable connection .
the codec was connected to the wall socket.
3. when we power on the codec, we use relay to power on the codec,
4. when we power off the codec, TP host will send signal to three codec and do software power off and then ask relay to power off by hardware method.
Root Cause
fault cable connection .
know the detail about the power off process.