User's Manual Part 3

RBS 2308 and RBS 2309 User’s Guide
AC Power On
If the green AC powe
r on indicator is off, and if AC power should be available,
perform the follow
ing actions step-by-step until the fault ceases:
For more informat
ion about RBS A C power, see:
RBS 2308, RBS 2309, and RBS 2109
Hardware Reference M anual
EN/LZT 720 0058
• Ensure that the R
BS AC supply and RRU power switches on the MBU
are on
• Open the MBU cov
er and use a multimeter to check that the power input is
either 100 V AC t
o 127 V AC, or 200 V AC to 250 V AC
P010498A
Figure 82 M
easuring Incoming AC Voltage
• Disconnect the power cable from the RRU and use a multimeter to check
that the power supply to the RRU, is either 100 V AC to 127 V AC, or 200
V AC to 250 V AC. The power is measured between pin 5 and pin 6, see
figure below.
204
EN/LZT 720 0027 Uen R8A 2006-06-27