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Table 4-2. Unit Troubleshooting-continued -706880230
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TM-5-4210-233-14-P-1 Firfighting Truck 100 Ft. Aerial Ladder 1000 GPM Manual
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Table 4-2. Unit Troubleshooting-continued -706880232
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
8
SIDE FLASHERS DO NOT ILLUMINATE/FLASH
(Refer to Electrical Wiring Diagrams, Appendix H, Sheet 7 of 16.)
Step 1. Check bulb.
Replace bulb (see para 4-175).
Step 2. Check flasher unit.
Replace flasher unit. (see para 4-9.4)
Step 3. Check switch.
Replace switch (see para 4-94).
Step 4. Check for +12V at emergency master buss.
Refer to "=12 volts not present at emergency master buss" troubleshooting procedure.
Step 5. Check for +12V at circuit breaker #4 on emergency master buss.
Replace breaker (see para 4-99).
Step 6. Check wiring for continuity.
Replace wire (see para 4-9.4).
9
REAR WARNING STROBES DO NOT ILLUMINATE/FLASH
(Refer to Electrical Wiring Diagrams, Appendix H, Sheet 8 of 16.)
Step 1. Check 10A fuse on trigger unit in left-rear storage compartment.
Replace fuse (see para 4-9.4).
Step 2. Check for +12V at emergency master buss.
Refer to "+12 volts not present at emergency master buss"troubleshooting procedure.
Step 3. Check sealed beam flash unit.
Replace sealed beam unit (see para 4-61).
4-102

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