363-205-401
RT Turn Up: DLP-519
Issue 7, March 1997
Page 3 of 4
19. Do MN and NE indicators on both white and blue system ADUs and A/FCU
MN indicator light?
If YES, then proceed to Step 21.
If NO, then continue with Step 20.
20. Check wiring using SD-7C118-02. Repeat procedure from Step 19 after locat-
ing and correcting trouble.
21. Replace CMN blown fuse in BFU with good fuse and verify that ADU MN and
NE and A/FCU MN indicators go off.
22. At optics power shelf assembly, replace fuse in BLUE or WHITE fuse holder
with blown fuse in BFU1 (if equipping the lower dual bank assembly) or BFU2
(if equipping the upper dual bank assembly).
23. Do MJ and NE indicators on both white and blue system ADUs and A/FCU MJ
indicator light?
If YES, then proceed to Step 25.
If NO, then continue with Step 24.
24. Check wiring using SD-7C118-02. Repeat procedure from Step 23 after locat-
ing and correcting trouble.
25. Replace blown BLUE or WHITE fuse in BFU with good fuse and verify that
ADU MJ and NE and A/FCU MJ indicators go off.
26. At optics power shelf assembly, remove either PCU1 (if equipping the lower
dual bank assembly) or PCU5 (if equipping the upper dual bank assembly).
27. Do MJ and NE indicators on both white and blue system ADUs and A/FCU MJ
indicator light?
If YES, then proceed to Step 29.
If NO, then continue with Step 28.
28. Check wiring using SD-7C118-02. Repeat procedure from Step 27 after locat-
ing and correcting trouble.
29. Replace PCU and verify that ADU MJ and NE and A/FCU MJ indicators go off.
30. Have all PCUs in slots PCU1 - PCU4 or PCU5 - PCU8 been tested?
If YES, then STOP. YOU HAVE COMPLETED THIS PROCEDURE.
If NO, then continue with Step 31.
