363-205-401
Power Up: DLP-529
Issue 7, March 1997
Page 3 of 4
15. Is any indicator lighted on RCU?
If YES, then continue with Step 16.
If NO, then proceed to Step 17.
16. Replace RCU and repeat from Step 8.
17. Get DMM and condition it to measure DC volts.
18. Connect DMM test leads to
−
48V jack and GND jack on RCU.
19. Does meter indicate
−
43 to
−
56 volts?
If YES, then proceed to Step 21.
If NO, then continue with Step 20.
20. Replace RCU and repeat from Step 8.
21. On RCU at +20HZA jack and GND jack [Figure 1], measure DC positive ring-
ing.
Requirement: Meter indicates between 50 and 60 volts
22. Condition DMM to measure AC volts. Measure AC positive ringing at same
jacks (+20HZA and GND).
Requirement: Meter indicates between 90 and 110 volts.
23. Did meter indicate as required in Step 21 and Step 22?
If YES, then proceed to Step 25.
If NO, then continue with Step 24.
24. Replace RCU and repeat from Step 8.
25. Have both +20HZA and +20HZB jacks been tested?
If YES, then proceed to Step 27.
If NO, then continue with Step 26.
26. Condition DMM to measure DC volts and repeat from Step 21 for +20HZB
jack.
27. Is group 2 being equipped at this time (full shelf operation)?
If YES, then repeat from Step 1 for GROUP 2 side of shelf.
If NO, then STOP. YOU HAVE COMPLETED THIS PROCEDURE
