Lucent Technologies SLC 5 Series - Page 204

363-205-401 Power Up: DLP-527
Issue 7, March 1997 Page 5 of 6
7. On power unit, is
FAIL
indicator off?
If
YES,
then proceed to Step
11.
If
NO,
then continue with Step
8.
8. On AC power panel for power unit being installed, turn off circuit breaker to
R( )
feeder to power unit.
9. On rectifier shelf, unplug P905 connector and replace power unit.
10. Repeat from Step
4.
11. Condition DMM to measure DC volts. Meter accuracy must be ±0.3% or better.
12. On power unit, connect DMM to
+ OUTPUT VOLTAGE
and −
OUTPUT
VOLTAGE
test points. Measure DC output voltage (power unit float voltage).
13. Does meter indicate between −54.3 V DC and −54.7 V DC?
If
YES,
then proceed to Step
17.
If
NO,
then continue with Step
14.
14. On AC power panel for power unit being installed, turn off circuit breaker to
R( )
feeder to power unit.
15. On rectifier shelf, unplug P905-( ) connector and replace power unit.
16. Repeat from Step
4.
17. Is this the last power unit to be installed?
If
YES,
then proceed to Step
19.
If
NO,
then continue with Step
18.
18. On AC power panel for installed power unit, turn off circuit breaker to
R( )
feeder and repeat from Step
3
for next power unit.
19. On AC power panel, verify
CB( )
circuit breaker(s) are off for
R( )
feeder to
power unit(s) being installed.
20. On control & distribution panel, verify
CB( )
circuit breakers are off.
21. On rectifier shelf, connect
P906
(P906-1, P906-2, or P906-3) cable to
J906/CONTROL
connector and
P907
(P907-1, P907-2, or P907-3) cable to
J907/V
−
OUT
connector on each power unit being installed [Figure 3].