User's Manual Part 3

RBS 2308 and RBS 2309 User’s Guide
Not used
1
2
3
5
6
P010607A
Figure 83 Measuring Voltage on the RRU Power Cable
• Replace the PIB in
the MBU, see Section 10.5.6 Replacing a PIB on page
227
•ReplacetheRRU,
see Section 10.5.8 Replacing an RRU on page 235
DC Power On
If the green DC po
wer on indicator is off and if DC supply should be available,
perform the fol
lowing actions step-by-step until the fault ceases:
For more inform
ation about RBS DC supply voltage, see:
RBS 2308, RBS 2309, and RBS 2109
Hardware Reference Manual
EN/LZT 720 0058
• Ensure that t
he RBS DC supply and RRU switches on the MBU are on
• Open the MBU c
over and use a multimeter to check that the incoming
voltage is b
etween −40.5 V DC and −60.0 V DC
2
05
EN
/LZT 720 0027 Uen R8A 2006-06-27