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The following checklist contains the steps you must follow to ensure proper arming and operation of the 4-in-1 unit
as well as proper motor control response:
Each time before you fly you must ALWAYS turn on the transmitter power first before connecting
the flight battery to the 4-in-1 unit. Never connect the flight battery to the 4-in-1 unit before first
powering on the transmitter.
Also, never turn off the transmitter before disconnecting the flight battery from the 4-in-1 unit first.
Both the throttle (left-hand) stick and throttle trim MUST be in their lowest possible position in order
for the 4-in-1 unit to arm the electronic speed controls for the main motors.
If this is the first test flight, or a test flight following repairs, you will also want to center the rudder, aileron and
elevator trims.
Throttle Trim
Elevator Trim
Set Throttle
Trim and
Throttle Stick
at Lowest
Position
Rudder
Trim
Aileron
Trim
After confirming that the transmitter has been turned on and has an adequate level of battery power as
displayed by the LCD screen at the top of the transmitter, it is now safe to connect the flight battery to the
4-in-1 unit.
Note: Each time you power the transmitter on, it will enter “Bind Mode” (See pages 39–40 for
more information regarding “Bind Mode”) for a few seconds, as indicated by the red blinking LED
located under the door on the left bottom front of the transmitter. Once this LED becomes solid, the
transmitter is no longer in bind mode. We recommend waiting to connect the flight battery to the
4-in-1 unit until after the transmitter has exited bind mode, otherwise the 4-in-1 unit may not arm
properly or as quickly.
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