Power Up: DLP-518
363-205-401
Page 2 of 4
Issue 7, March 1997
2.
Verify that each fuse holder on faceplate of PRU contains an 80G (0.5A) fuse
(red bead) and that fuses are not blown (fuse is blown when bead protrudes
from hole in faceplate). If a fuse is blown, use WECO 553A Extractor Tool
(Techni-Tool No. 594TE170) or WECO 319B (KS-6305) Extractor Tool
(Techni-Tool No. 490PL020) to remove it.
3.
Is a PRU present in PRU1 slot in bulk power shelf?
If YES, then proceed to Step 5.
If NO, then continue with Step 4.
4.
Insert AUG1 PRU into PRU1 slot in bulk power shelf and proceed to Step 6.
5.
Insert AUG1 PRU into PRU2 slot in bulk power shelf.
6.
Do any fuses on PRU blow?
If YES, then continue with Step 7.
If NO, then proceed to Step 12.
7.
Replace blown fuse(s) on PRU using WECO 553A Extractor Tool (Techni-Tool
No. 594TE170) or WECO 319B (KS-6305) Extractor Tool (Techni-Tool No.
490PL020).
8.
Do any fuses on PRU blow?
If YES, then continue with Step 9.
If NO, then proceed to Step 12.
9.
Check wiring using SD-7C119-01.
10. Is wiring correct?
If YES, then get another PRU and proceed to Step 2.
If NO, then continue with Step 11.
11. Repair wiring and replace blown fuses in PRU.
12. Condition digital multimeter (DMM) to measure DC volts.
13. On PRU, connect DMM test leads to
−
48 jack and FR GND jack.
14. Does DMM indicate between
−
42 and
−
56 volts?
If YES, then proceed to Step 16.
If NO, then continue with Step 15.
