TM 5-5420-234-14&P
4-12. UNIT TROUBLESHOOTING (continued).
23. BACKUP ALARM DOES NOT OPERATE (MODEL B ONLY) (continued).
CONTINUITY TEST
CAUTION
Electrical power must be shut off
from circuit before continuity can
be checked. Failure to comply with
this caution may result in damage
to test equipment or electrical sys-
tem.
(1) Set multimeter to ohms position.
NOTE
A reading of infinity indicates an
open circuit.
(2) Connect multimeter between backup
alarm, position "1", and position "2".
BACKUP
Check multimeter for continuity.
BACKUPALARM
ALARM
SWITCH
CONNECTOR
POSITION
2
POSITION
1
4-455
Change 1
4 1
