Lucent Technologies SLC 5 Series - Page 122

363-205-401 Power Up:
Issue 7, March 1997 Page 1 of 4
DLP-508
Install 3C( ) Ringing Generators in Power Shelf
SUMMARY:
Insert Main
3C( ) RINGING GENERATOR
into left
RING GEN
slot in
power shelf. Measure 90 to 110 V AC and −50 to −60 V DC at
LDU
(−
20HZ
/
GND
).
Unseat main
RINGING GENERATOR
, install spare
RINGING GENERATOR
and
repeat. Reseat main
RINGING GENERATOR
and press and hold
TEST PROT RG
button on
LDU
. Verify that
FAIL
indicator on spare
RINGING GENERATOR
is off and
FAIL
indicator on main
RINGING GENERATOR
is lighted.
1. Get two
3C( ) RINGING GENERATOR
s and inspect for possible physical
damage.
2.
!
CAUTION:
Damage to 3C( ) RINGING GENERATOR and shelf connector may occur
if 3C( ) RINGING GENERATOR is forced into position.
Insert one
3C( ) RINGING GENERATOR
into main (left)
RING GEN
slot in
power shelf.
3. Condition DMM to measure AC volts.
4. On
LDU
, connect DMM test leads to −
20 HZ
jack and
GND
jack.
5. Does DMM indicate between 90 and 110 volts?
If
YES,
then continue with Step
6.
If
NO,
then proceed to Step
8.
6. Condition DMM to measure DC volts.