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10.
HELICOPTER DOESN'T REACT AT ALL
Transmitter battery charged?
YES
Are both crystals conncted & working
properly?
YES
Antenna deployed?
YES
Helicopter battery charged and con-
nected?
YES
Throttle trim and stick in minimum
position?
YES
Servo reverse button correct?
YES
Do the servo's work?
YES
Is the motor overheated?
NO
Do the motor(s) work?
YES
Does the green LED on the 4/1 board
light?
YES
Contact your model shop for assistance
BATTERY CAN'T BE RECHARGED
Did you charge your battery before
flying
YES
Did you fly your helicopter till it
doesn't lift anymore?
NO
Is your battery "inflated"
NO
Ask your model shop to check the charger
HELICOPTER VIBRATES
Are the rotorblades in perfect condi-
tion
YES
Is the Hiller bar straight?
YES
Are the axles straight
YES
Contact your model shop for assistance
# 0321-000A - Apache Combat
All manuals and user guides at all-guides.com
Problem solving
NO ---> Charge batteries
NO ---> Exchange the crystals
NO---> Deploy antenna completely
NO ---> Charge battery and connect it
NO ---> Put throttle stick and throttle
trim in minimum position
NO ---> Change servo reverse button
to correct position
NO ---> Exchange the servos
YES ---> Let the motor(s) cool down
NO ---> Exchange the motor(s)
NO ---> Exchange 4/1 board
NO ---> Exchange the battery
YES ---> Exchange the battery
YES ---> Exchange the battery
NO ---> Change the rotorblades
NO ---> Exchange the Hiller bar
NO ---> Exchange the bent axles
HELICOPTER TURNS AROUND IN CIRCLES
Helicopter battery completely
charged?
YES
Has the helicopter been crashed?
NO
Check if the maingear is fastened and
doesn't rotate freely
NO
Do the motor(s) work?
YES
4 in 1 control unit has been damaged and must be replaced.
HELICOPTER IS NOT STABLE ANYMORE
Are you flying near an open window/
door/working airco?
NO
Has the helicopter been crashed?
NO
Check if the maingear is fastened and
doesn't rotate freely
NO
Helicopter battery completely
charged?
YES
Do the rotorblades rotate freely?
YES
Adjust the adjusting screw of the
swashplate as mentionned in the
manual
copyright © 2007 BMI
NO ---> Charge battery and connect it
YES ---> Exchange the broken parts
YES ---> Fasten main gear or screw
NO ---> Exchange the motor(s)
YES ---> Close the windows and turn
off airco
YES ---> Exchange the broken parts
YES ---> Fasten main gear or screw
NO ---> Charge battery and connect it
NO ---> Put a little oil on the fixating
screw
NO ---> Ask your model shop for
advice
8
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