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].
