“RF unit CPRI interfaces error” alarm Troubleshooting in RRU Site

1. At first we need to check the RRU is getting power or not.

2. Also have need to check the voltage in power cable by multi meter, it must be

minimum -48V dc.

3. If RRU is getting power then we need to check the CPRI cable. If the alarm is in

cell B, then we can interchange the CPRI cable with cell A (from both GTMU and

RRU), if the alarm is shifted to Cell A, then the problem was in CPRI cable. So we

need to change the CPRI cable. If CPRI cable is faulty, the CPRI 0 led will be

blinking.

Appreciate this type of post.. carry on.

This document is very well done

useful document, thanks