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 CHARGERs and
ALARM indicators on 336A RECTIFIERs go off and HIGH
RATE CHG/ON indicators on all BATTERY CHARGERs
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 CHARGERs except last one replaced and repeat from
Step 2.
