Lucent Technologies SLC 5 Series - Page 154

Power Up: DLP-517 363-205-401
Page 2 of 4 Issue 7, March 1997
10. Is AC/DC ringing present at both −
20HZ
jacks on the
RSU
?
If
YES,
then proceed to Step
24.
If
NO,
then continue with Step
11.
11. Check wiring at bulk power shelf using SD-7C130-01. Repeat procedure from
Step
3
after locating and correcting trouble.
12. Is
FAIL
indicator on
RING GEN1
lighted?
If
YES,
then continue with Step
13.
If
NO,
then proceed to Step
14.
13. Replace
RING GEN1
and repeat the procedure from Step
3
.
14. Condition DMM to measure AC volts.
15. On
RING GEN1
, connect DMM test leads to −
20HZ
jack and
GND
jack.
Response: DMM indicates between 90 and 110 volts.
16. Condition DMM to measure DC volts.
Response: DMM indicates between −50 and −60 volts.
17. Is AC/DC ringing present on
RING GEN1
?
If
YES,
then continue with Step
18.
If
NO,
then proceed to Step
19.
18. Check wiring on bulk power shelf connecting to
RING GEN1
using
SD-7C130-01. Repeat procedure from Step
3
after locating and correcting
trouble.
19. Condition DMM to measure DC volts.
20. On
RING GEN1
, connect DMM test leads to −
48V
jack and
GND
jack.
21. Does DMM indicate between −42 and −56 volts?
If
YES,
then continue with Step
22.
If
NO,
then proceed to Step
23.
22. Replace
RING GEN1
and repeat the procedure from Step
3
.
23. Check wiring on bulk power shelf to
RING GEN1
using SD-7C130-01. Repeat
procedure from Step
3
after locating and correcting trouble.