TM 5-3610-287-24
Organizational Troubleshooting (Cont)
Table 2-3.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
17.
CEILING LIGHTS DO NOT OPERATE.
Step 1.
Check that CEILING LIGHTS circuit breaker is ON.
Set CEILING LIGHTS circuit breaker to ON.
Step 2.
Check that BY-PASS, ceiling lights, and 3-WAY switches are
ON.
Set switches to ON.
WARNING
HIGH VOLTAGE. When working on high voltage
components, always have an additional person
present. Keep one hand away from equipment to
reduce hazard of current flowing through vital
organs of body. Remove all jewelry from
fingers, wrists, and neck before working on
electrical components. Failure to observe this
warning may result in death or serious burns.
Step 3.
Set CEILING LIGHTS circuit breaker to OFF. Remove cover
plate from 3-WAY switch at Section sink. Partially remove
3-WAY switch. Set CEILING LIGHTS circuit breaker to ON.
Test voltage from ground to three terminals on 3-WAY
Switch . Readings should be 110 +5 Vac on two of three
--
terminals.
If readings are correct, replace 3-WAY switch at load
center (para 2-55).
If only one reading is 110 5 Vat, replace 3-WAY switch
at Section sink (para 2-55).
If all readings are 0 Vac, go to next step.
