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TM 5-4210-233-14&P-1
Table 4-2. Unit Troubleshooting - Continued
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
ELECTRICAL SYSTEM - EMERGENCY MASTER CIRCUITS - Continued
4
ROTATING BEACONS DO NOT OPERATE - Continued
Step 5. Check wiring for continuity.
Replace wire (see para 4-9.4).
5
FRONT WARNING (CROSSFIRE) LIGHTS DO NOT OSCILLATE
(Refer to Electrical Wiring Diagrams, Appendix H, Sheet 1 of 16.)
Step 1. Check motor for proper operation.
Replace motor (see para 4-83).
Step 2. Check wiring for continuity.
Replace wire (see para 4-9.4).
6
FRONT WARNING (CROSSFIRE) LIGHTS DO NOT ILLUMINATE
(Refer to Electrical Wiring Diagrams, Appendix H, Sheet 1 of 16.)
Step 1. Check bulb.
Replace bulb (see para 4-83).
Step 2. Check wiring for continuity.
Replace wire (see para 4-9.4).
7
FRONT WARNING (CROSSFIRE) LIGHTS DO NOT OPERATE
(Refer to Electrical Diagrams, Appendix H, Sheet 1 of 16.)
Step 1. Check switch.
Replace switch (see para 4-94).
Step 2. Check for +12V at emergency master buss.
Refer to "+12 volts not present at emergency master buss" troubleshooting procedure.
Step 3. Check for +12V at circuit breaker #3 on emergency master buss.
Replace breaker (see para 4-99).
Step 4. Check wiring for continuity.
Replace wire (see para 4-9.4).
4-101

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