363-206-305 Trouble Clearing:
Issue 3, June 2000 Page 1 of 6
DDM-2000 F
IBER
R
EACH
W
IDEBAND
S
HELF
TAP-114
Clear External Minor Alarm at RT
1. Are there any blown fuses on battery shelf or BFU (for bulk powering)?
If YES, continue with Step 2.
If NO, proceed to Step 4.
2. Replace blown fuse(s).
3. Does alarm clear?
If YES, STOP. YOU HAVE COMPLETED THIS PROCEDURE.
If NO, continue with Step 4.
4. Is bulk power (J1C182BB bulk power shelf) being used?
If YES, proceed to Step 25.
If NO, continue with Step 5.
5. Is OPEN BATT LED on 337A BATTERY CHARGER lighted at RT battery
shelf?
If YES, continue with Step 6.
If NO, proceed to Step 25.
6. Condition DMM (digital multimeter) to measure voltage.
7. Measure voltage at –48B and GND and –48L and GND jacks on the LDU
faceplate.
8. Does voltage measure between –42 and –58 volts?
If YES, continue with Step 9.
If NO, proceed to Step 18.
9. Use SD-7C119 to check wiring between 337A BATTERY CHARGER and
batteries.
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