TM 9-6150-226-13
WARNING
High voltage is present in this system. DISE and
PDISE supports equipment using 120/208 V ac. Do
not attempt continuity checks with the power on.
Death or serious injury may result.
d.
Electrical Fault Isolation.
To isolate a short or open circuit, use
a multimeter (item 3, App B).
Refer to Table 5-1 and the appropriate DISE or
PDISE cable continuity checklist in Table 4-8 and measure continuity. A
measurement of continuity between two points listed in the tables as having no
continuity indicates a short circuit.
A measurement of no continuity between
two points listed in the tables as having continuity indicates an open circuit.
NOTE
Before using Table 5-1, be sure all applicable
operator and organizational
checks have been
performed.
Table 5-1.
DIRECT SUPPORT TROUBLESHOOTING
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
SYSTEM CABLE WILL NOT CARRY CURRENT OR TRIPS CIRCUIT BREAKER.
Step 1.
Check continuity
between corresponding letters of pins and
sockets of male and female connectors (see Table 4-8). No
continuity indicates an open wire.
Repair/replace defective cable.
Step 2.
Check continuity between different letters of pins and sockets
of male and female connectors (see Table 4-8).
Continuity
indicates a short between wires.
Repair/replace shorted cable.
5-3
