363-205-401
Power Up: DLP-506
Issue 7, March 1997
Page 5 of 6
24. Operate AC power circuit breaker off and then back on.
25. Check for presence of 105 to 129 volts AC at rear of power shelf.
26. Is correct voltage present?
If YES, then proceed to Step 4.
If NO, then refer trouble to installation group.
27. Replace 336A RECTIFIER.
28. Condition DMM to measure DC volts.
29. Connect DMM test leads to
−
48B jack and GND jack on LDU.
30. Does DMM indicate between
−
42 and
−
56 volts?
If YES, then proceed to Step 33.
If NO, then continue with Step 31.
31. Replace 336A RECTIFIER with 336A RECTIFIER removed previously.
32. Check wiring on rear of power shelf using SD-7C119-01. Repeat procedure
from Step 5 after trouble is found and corrected.
33. Is another 336A RECTIFIER to be installed?
If YES, then continue with Step 34.
If NO, then proceed to Step 36.
34. Unseat 336A RECTIFIER(s) installed previously.
35. Get another 336A RECTIFIER and repeat from Step 2.
36. Remove DMM test leads and reseat all 336A RECTIFIERs.
STOP. YOU HAVE COMPLETED THIS PROCEDURE.
