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363-205-401
Power Up: DLP-511
Issue 7, March 1997
Page 3 of 4
22. Replace PCU with PCU removed previously.
23. Is PCU being installed in a frame-type RT with bulk powering (J1C182BB bulk
power shelf)?
If YES, then proceed to Step 30.
If NO, then continue with Step 24.
24.
NOTE:
Two dual bank assemblies share a common power shelf.
Is PCU being installed in second dual bank assembly?
If YES, then continue with Step 25.
If NO, then proceed to Step 29.
25. Replace associated 336A RECTIFIER located in power shelf.
26. On PCU, connect DMM test leads to GND jack and
−
48 jack.
27. Does DMM indicate between
−
42 and
−
56 volts?
If YES, then proceed to Step 31.
If NO, then continue with Step 28.
28. Replace 336A RECTIFIER with 336A RECTIFIER removed previously.
29. Check wiring using SD-7C117-01 or SD-7C117-02 and, if system is being
equipped with FTTH feature, also use SD-7C118-02 and SD-7C150-01.
Repeat procedure from Step 3 after locating and correcting trouble.
30. Check fuses in RT dual bank assembly LFU and bulk power shelf BFU. If trou-
ble is not found, check wiring at RT dual bank assembly and bulk power shelf
using SD-7C117-01 or SD-7C117-02 and SD-7C130-01, respectively. Repeat
procedure from Step 3 after locating and correcting trouble.
31. Disconnect DMM test leads.
STOP. YOU HAVE COMPLETED THIS PROCEDURE.