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Page Title: MASTER SWITCH CIRCUIT. (Cont)
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TM 9-2350-238-20-1
2-12. ELECTRICAL CIRCUIT TROUBLESHOOTING (CONT).
Step 2.
Disconnect lead 459B (to rectifier) from circuit breaker. Place red probe in
circuit breaker and ground black probe. If multimeter indicates no voltage,
go to step 4. If multimeter indicates about 24 volts, replace rectifier. Refer
to page 2-590. Connect lead 459B to circuit breaker.
Step 3.
Disconnect both leads 459 from MASTER switch. Place red probe in lead
459 and ground black probe. Check voltage in both leads 459. If
multimeter indicates no voltage in either lead, connect leads 459 to
MASTER switch and go to step 5. If multimeter indicates about 24 volts in
one lead, connect the lead 459 that measures about 24 volts to MASTER
switch and go to step 6.
2-98

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