User's Manual Part 3

RBS 2308 and RBS 2309 User’s Guide
9.
Check that the voltage is −48 V
DC, using a multimeter.
P011187A
2 mm
10.3.12 SO TRXC RU:0/ RRU
This section describes how to localize an SO TRXC RU:0/ RRU fault.
Related R Us
The RUs listed below have higher priority than the RU described in this section.
If they are present, go to the related section before handling this RU.
• If “SO CF RU:3/ Y link” appears in the OMT, then proceed with Section
10.3.3 SO CF RU:3/ Y Link on page 179
• If “SO CF RU:31/ Environment” appears in the OMT, then proceed with
Section 10.3.7 SO CF RU:31/ Environment on page 185
• If “SO CF RU:34/ IDB” appears in the OMT, then proceed with Section
10.3.8 SO CF RU:34/ IDB on page 187
Two TXs are used when TX diversity is activated, but only the first TX sends
the alarm. The fault is therefore located in a different RRU.
Displaying Fault Information
Display fault information according to Section 10.3.1 Reading Fault Status
on page 177.
Perform the following actions step-by-step until the fault ceases:
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EN/LZT 720 0027 Uen R8A 2006-06-27