363-206-305 Trouble Clearing:
TAP-114
Issue 3, June 2000 Page 3 of 6
DDM-2000 F
IBER
R
EACH
W
IDEBAND
S
HELF
19. Does voltage measure between –42 and –58 volts?
If YES, proceed to Step 37.
If NO, continue with Step 20.
20. Is 197A BATTERY LOAD TEST SET available for use in testing batteries?
If YES, continue with Step 21.
If NO, proceed to Step 23.
21. Test batteries using 197A test set.
Reference: DLP-532
22. Replace any failed battery pack(s) and reconnect battery leads to battery shelf
and proceed to Step 24.
23. Replace battery packs one at a time until –48 volts is present at output jacks
on battery shelf.
24. Does alarm clear?
If YES, STOP. YOU HAVE COMPLETED THIS PROCEDURE.
If NO, continue with Step 25.
25. Is FAN ALARM LED lighted on a fan assembly?
If YES, continue with Step 26.
If NO, proceed to Step 37.
26. Remove FAN H and FAN L fuses on corresponding BFU on power shelf. Are
fuses blown?
If YES, continue with Step 27.
If NO, proceed to Step 30.
27. Replace FAN H and FAN L fuses on corresponding BFU.
28. Does alarm clear?
If YES, STOP. YOU HAVE COMPLETED THIS PROCEDURE.
If NO, continue with Step 29.
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