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TM 5-4210-233-14&P-1
SYMPTOM
PAGE NO.
ELECTRICAL SYSTEM - AERIAL CONTROL PANEL - Continued
LADDER INTERCOM DOES NOT FUNCTION PROPERLY ............................................
4-134
LADDER TIP SPEAKER DOES NOT FUNCTION PROPERLY ................... ....................
4-135
AERIAL LADDER HOIST CYLINDER LOCKING VALVES DO NOT RELEASE LADDER
WHEN RAISE/LOWER CONTROL IS PLACED IN "LOWER" POSITION .......................
4-135
ELEVATION SLOW-DOWN VALVE DOES NOT ENGAGE WHEN LADDER
REACHES 70' ELEVATION .............................................................................................
4-136
FLOW MINDER (GALLONS-PER-MINUTE) METER DOES NOT FUNCTION PROPERLY
4-137
OVERLOAD ALARM DOES NOTSOUND WHEN HYDRAULIC SYSTEM IS AT 1950 PSI
4-137
OVERLOAD ALARM SOUNDS CONTINUOUSLY WHILE HYDRAULIC SYSTEM
PRESSURE IS BELOW 1950 PSI....................................................................................
4-138
AERIAL MONITOR/NOZZLE DOES NOT RESPOND TO UPPER CONTROL BOX .........
4-138
AERIAL MONITOR/NOZZLE DOES NOT RESPOND TO LOWER CONTROL BOX
(ON AERIAL PANEL) .......................................................................................................
4-139
AERIAL MONITOR/NOZZLE DOES NOT RESPOND IN ONE DIRECTION ....................
4-139
AERIAL MONITOR/NOZZLE WILL NOT FUNCTION IN ONE MODE (I.E., RAISE/LOWER)
4-140
+12 VOLTS IS NOT PRESENT AT AERIAL MASTER BUSS ..........................................
4-140
ELECTRICAL SYSTEM - EMERGENCY HYDRAULIC SYSTEM
EMERGENCY HYDRAULIC MOTOR DOES NOT OPERATE .........................................
4-141
EMERGENCY HYDRAULIC POWER ACTIVATED LIGHT DOES NOT ILLUMINATE ......
4-141
ELECTRICAL SYSTEM - APU AND 1 1 O-VOLT CIRCUITS
AUXILIARY POWER UNIT (APU) DOES NOT START/RUN WITH CAB OR
PUMP PANEL CONTROLS .............................................................................................
4-142
AUXILIARY POWER UNIT (APU) RUNS, BUT NO POWER OUTPUT.............................
4-142
AUXILIARY POWER UNIT DOES NOT SHUT OFF .........................................................
4-143
AUXILIARY POWER UNIT PREHEAT CONTROL DOES NOT WORK ...........................
4-143
DRIVERS/PASSENGERS FLOODLIGHT (110V) DOES NOT ILLUMINATE WITH
CAB SWITCH AND AUXILIARY POWER UNIT RUNNING ....................... ......................
4-143
NO POWER AT ANY 11OV OUTLET (EXCEPT LADDER TIP) .......................................
4-144
NO POWER AT LADDER TIP OUTLET ...........................................................................
4-145
110V PORTABLE WORK LIGHT DOES NOT ILLUMINATE WITH CAB SWITCH ..........
4-145
4-25
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