Lucent DDM-2000 OC-3 User And Service Manual page 710

363-206-285
Issue 2, February 2000
10. Was a problem found in wiring?
If YES, then continue with Step 11.
If NO, then proceed to Step 12.
11. Correct wiring problem and proceed to Step 17.
12. Is fuse blown on 337A BATTERY CHARGER?
If YES, then proceed to Step 16.
If NO, then continue with Step 13.
13. Is BAT DISCHG LED on 337A BATTERY CHARGER lighted?
If YES, then continue with Step 14.
If NO, then proceed to Step 16.
14. Depress and hold HIGH RATE CHG ACTIVATE pushbutton on 337A
BATTERY CHARGER. Is BAT DISCHG LED lighted?
If YES, then continue with Step 15.
If NO, then proceed to Step 16.
15.
NOTE:
HIGH RATE CHG ON LED will remain lighted until batteries reach
approximately –58 volts. If batteries are completely discharged, it may
take approximately one day for HIGH RATE CHG ON LED to go out.
Release HIGH RATE CHG ACTIVATE pushbutton. Does BAT DISCHG LED
go off and is HIGH RATE CHG ON LED lighted?
If YES, then proceed to Step 17.
If NO, then continue with Step 16.
16. Replace 337A BATTERY CHARGER and proceed to Step 17.
17. Did alarm clear?
If YES, then STOP. YOU HAVE COMPLETED THIS PROCEDURE.
If NO, then proceed to Step 23.
18. Use DMM to measure voltage at battery shelf jacks J5 (+BAT) and J6 (–BAT).
DDM-2000 OC-3 M
Trouble Clearing:
ULTIPLEXER
TAP-114
Page 2 of 6