SATURN
EPABX
installation Test Procedures
Issue 1, May 1986
SECTION 4.00 POWER-UP TESTS
4 . 0 1
General. The SATURN
System makes use of dis-
tributed power in the equipment cabinet. Several power sup-
plies are used in the system. These power supplies provide
ringing
voltage and message waiting voltage, from a
input power source. After satisfactorily performing the ground
tests
in Section 3.00, the following
must be per-
formed to ensure that proper power cable connections have
been accomplished and that the power supplies inside the
cabinet assembly have not been damaged during shipment.
WARNING
voltages exist within the equipment cabinet.
extremely
when performing
with the equipment panel(s) removed.
4 . 0 2
Power-Up/Output Voltage Tests. Before proceeding with
the test procedures indicated in Table 4.00, check that all pow-
er cable assemblies are properly secured into their correspond-
i n g l o c a t i o n s . N o t e t h a t t h e t e s t p r o c e d u r e s i n T a b l e 4 . 0 0 i n c l u d e
p r o c e d u r e s f o r t e s t i n g t h e o p t i o n a l M S M , w h e n e q u i p p e d i n t h e
system.
Table 4.60 Power-Up/Output Voltage Test
f not previously done, extract each
in the system from its
ive backplane connector in basic
LTU shelves.
that
circuit breakers on the
are in the off positions and that
fuses are inserted in their
locations.
Jsing the digital multimeter (or an
polarity indicator), verify that the
ac power receptacle
for powering the
has the
polarity.
Connect the
power cord(s) to the
power receptacle(s).
the following circuit breakers
the PSU to the on (up) position:
a) Basic PS
b)
c)
(if equipped)
d) LTUPSO (if equipped)
e)
(if equipped)
9
LTUPS2 (if equipped)
If the optional MSM module is
equipped in the system, proceed
follows:
If not previously done, connect
and insert battery pack into
the MSM assembly.
the BATTERY TEST
switch on the PSU and
release after verification has
been obtained.
VERIFICATION
indication must coincide with
3.00 and 3.01.
The associated green LED should
light steadily.
IF VERIFICATION
IS NOT
if polarity indication does not coin-
cide, correct before proceeding with
the remainder of test in this
If the green LED remains
guished, the battery pack is below
acceptable voltage limits. Let MSM
charge battery pack and retry test af-
ter 30 minutes have elapsed. If green
LED remains extinguished, the bat-
tery pack is defective and requires
replacement.
‘l-1
