User's Manual Part 3

RBS 2308 and RBS 2309 User’s Guide
P010497A
Figure 84 Meas
uring the Incoming DC Voltage
• Disconnect the power cable from the RRU and use a multimeter to check
that the voltage, supplying the RRU, is between −40.5 and −60.0 V DC.
The power is measured between pin 1 and pin 2, see figure below.
Not used
1
2
3
5
6
P010607A
Figure 85 Measuring the Voltage on RRU Power Cable
• Replace the PIB in the MBU, see Section 10.5.6 Replacing a PIB on page
227
• Replace the RRU, see Section 10.5.8 Replacing an RRU on page 235
206
EN/LZT 720 0027 Uen R8A 2006-06-27