![background image](http://html.mh-extra.com/html/hubsan/x4-desire/x4-desire_instruction-manual_2180924012.webp)
7.1.3 Apply power on the X4 by connecting the battery plug with correct polarity. Please
first disconnect the X4 battery plug and then turn off the TX when you stop flying.
THE HUBSAN X4
15
THE HUBSAN X4
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7.1 Power-On (Failsafe) Procedure
Your X4's flight contoller is coded with a Power-On failsafe.
This is designed to ensure that the X4’s motor will not start unless it detects a suitable
radio-control signal when the LiPo battery is connected. The correct Start-Up sequence is
as follows:
7.1.1 Make sure the throttle stick is in the full down position.
7.1.2 Power on the transmitter and the red LED will be blinking. Please do not move any
other stick or trim before the TX and X4 match code and bind, or the X4 will drift. The TX
LED will turn green when the TX binds with the X4.
7 START TO FLY
MODE 2
MODE 1
8.3 Aerial Flip Tips.
8.3.1 Left side flip
Push the joystick to the right side and then quickly push the joystick to the left and then
release the stick to the center position after the flip.
Your X4 can do 360° flips by pushing the joysticks as described below. For
proper flip execution, make certain that the X4 is close to level, within a 30° angle with
the ground, and add some climb throttle before you move the pitch and roll sticks.
!
The flip maneuver will only work in the the EXPERT MODE when anti-flip is not selected.
You need to press the elevator stick one time to switch into the expert mode. To select
anti-flip momentarily press the throttle stick in: anti-flip=one beep. flip=two beeps.
MODE 2
MODE 1
3.7V 380mAh