Error 1319

Check this Thread.

1319 (CommLossFail) is characterized as a communication loss between the CRU nd the SRU.  It can be caused by a number of problems, but check to make sure all your connectors are in securely and tight first. Your looking for this because it's a CPU Hub failure somewhere between the MCU (powersupply base) and the HCU injector head. A lot of injectors with this problem have a bad hub in the MCU or an injector head cable that went bad. If your "Tech inclined" open the HCU and MCU up. Then remove and replace the Ethernet cable from the Hub with a long Ethernet cable, (You will see it clearly.) and connect the other end of the Ethernet cable to the internal HCU connection. This will allow the injector to come back to life without an error. (if it is bad communication through the head cable) 

Now get someone to replace the head cable if you have never replaced one before.