Lucent Technologies SLC 5 Series - Page 116

363-205-401 Power Up: DLP-507
Issue 7, March 1997 Page 5 of 10
27. Replace
LDU
and repeat from Step
23.
28. Check wiring between power shelf and battery shelf using SD-7C119-01.
Repeat procedure from Step
23
after locating and correcting trouble.
29. Remove DMM test leads and turn on circuit breaker providing AC power to
system under test.
Response:
BAT DISCHG
indicators on all
BATTERY CHARGER
s and
ALARM
indicators on
336A RECTIFIER
s go off and
HIGH
RATE CHG/ON
indicators on all
BATTERY CHARGER
s
light. The
HIGH RATE CHG/ON
indicator will go off after a
period of time determined by charge state of batteries.
30. Remove either
+BAT
or −
BAT
fuse from one of the battery shelves.
31. Does
OPEN BAT
indicator on associated
BATTERY CHARGER
light and
HIGH RATE CHG/ON
indicator go off?
If
YES,
then proceed to Step
37.
If
NO,
then continue with Step
32.
32. Replace
BATTERY CHARGER
being checked.
Response:
BAT DISCHG
indicator will light and remain lighted for a
period of time determined by charge state of batteries.
If
BAT DISCHG
indicator remains lighted for more than 4
minutes,
BCU PMN
(or
P/M
) and
ADU NE
indicators will also
light.
When
BAT DISCHG
indicator goes off, the
HIGH RATE
CHG/ON
indicator will light and, if
BCU PMN
(or
P/M
) and
ADU NE
indicators are lighted, they will go off after 4 min-
utes.
The
HIGH RATE CHG/ON
indicator will go off after a period
of time determined by charge state of batteries.
33. Does
OPEN BAT
indicator on
BATTERY CHARGER
light and
HIGH RATE
CHG/ON
indicator go off?
If
YES,
then continue with Step
34.
If
NO,
then proceed to Step
35.
34. Unseat all
BATTERY CHARGER
s except last one replaced and repeat from
Step
2.