Lucent Technologies SLC 5 Series - Page 167

363-205-401 Power Up:
Issue 7, March 1997 Page 1 of 2
DLP-521
Install 3H1 Ringing Generators in J1C182BD Power
Shelf
SUMMARY:
Insert
3H1 RINGING GENERATOR
into
RING GEN1
slot in power
shelf. Measure 90 to 110 V AC and −50 to −60 V DC at [−
20HZ (1)
,
GRD
]. Unseat
RING GEN1
, install
RING GEN2
and repeat. Reseat
RING GEN1
. Verify no
-20HZ
RCU
fuses blow.
1. Get two
3H1 RINGING GENERATOR
s and inspect for possible physical dam-
age.
2. Insert one
3H1 RINGING GENERATOR
into
RING GEN1
slot in power shelf.
3. Is
FAIL
indicator on
RING GEN1
lighted?
If
YES,
then continue with Step
4.
If
NO,
then proceed to Step
5.
4. Replace
RING GEN1
and repeat the procedure from Step
3
. If replacement
FAIL
indicator lights, proceed to Step
9
.
5. Condition DMM to measure AC volts.
6. On
RING GEN1
, connect DMM test leads to −
20HZ
jack and
GND
jack.
Response: DMM indicates between 90 and 110 volts.
7. Condition DMM to measure DC volts.
Response: DMM indicates between −50 and −60 volts.