BLACKOUT MARKER CIRCUIT. (Cont) - TM-9-2350-238-20-10264

TM 9-2350-238-20-1

2-12. ELECTRICAL CIRCUIT TROUBLESHOOTING (CONT).

Make sure MASTER switch is off before repairing electrical

circuits. Failure to observe this warning could result in injury to

personnel.

To access electrical accessories panel, remove left CO2 cylinder access

Step 3.

cover. Refer to page 2-923. Disconnect lead 10 from circuit breaker.

Place red probe in lead 10. Ground black probe. Set MASTER switch ON.

If multimeter indicates about 24 volts, go to step 4. If multimeter indicates

no voltage, repair lead 10. Refer to page 2-371. Set MASTER switch OFF

and connect lead.

Disconnect leads 15&25 and 10 from circuit breaker. Check continuity

Step 4.

between circuit breaker terminals. If multimeter indicates continuity, repair

lead 15&25. Refer to page 2-371. If multimeter does not indicate

continuity, replace circuit breaker. Refer to page 2-590. Connect leads.

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