User's Manual Part 3

RBS 2308 and RBS 2309 User’s Guide
DC Power On
If the green DC powe
r on indicator is off, and if DC supply should be available,
then perform the fo
llowing actions step-by-step until the fault ceases, or until
the IXU power is co
nfirmed:
For more informat
ion about RBS DC supply voltage, see:
RBS 2308, RBS 2309, and RBS 2109
Hardware Reference M anual
EN/LZT 720 0058
1.
Ensure that the RBS DC supply switch on the MBU is on.
2.
Open the MBU cover and use
a multimeter to check that the
incoming voltage is between
−40.5 V DC and −60.0 V DC.
P010497A
3.
Disconnec
t the power cable from the IXU and use a multimeter to
check tha
t the voltage supplying the IXU is between −40.5 V DC and
−60.0 V DC
. The power is measured between pin 1 and pin 2, see
figure be
low.
200
EN/LZT 720 0027 Uen R8A 2006-06-27