Blade mCX2 Manual

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5-in-1 Control Unit Description, Arming and Motor Control Test
The unique Control Unit installed on your Blade mCX2 is a lightweight combination
of main motor electronic speed controls, mixer, gyro, servos and Spektrum DSM2
compatible receiver. The 5-in-1 unit is also equipped with a status indicator LED.
The following checklist contains the steps to ensure proper arming and operation of
the control unit, as well as proper motor response:
Before each flight ALWAYS turn the transmitter on before connecting the flight ❏
battery to the 5-in-1 unit. Never connect the flight battery to the 5-in-1 unit before
powering the transmitter on first. After each flight, always disconnect the flight
battery from the 5-in-1 unit before powering the transmitter off.
Note: The only time you should connect the flight battery to the 5-in-1 unit before
powering the transmitter on is when you are binding the receiver of the 5-in-
1 unit to the transmitter. Please see the Transmitter and Receiver Binding
section of this manual for more information.
The throttle stick MUST be set in the lowest possible position, and the throttle ❏
trim must be set to the middle or a lower than middle position (the middle
position is indicated by a longer than usual beep/tone), in order for the 5-in-1 unit
to arm.
If this is the first test flight, or a test flight following repairs, you should also
center the rudder, aileron and elevator trims.
Mode 1Mode 2
Set throttle stick to
lowest position.
Rudder Trim
Throttle Trim
Aileron Trim
Elevator Trim
Rudder Trim
Elevator Trim
Aileron Trim
Throttle Trim
Set throttle stick to
lowest position.
After confirming that the transmitter has been turned on and that the LED is glowing
solid BLUE, it is now safe to connect the flight battery to the 5-in-1 unit.
With the transmitter turned on and the LED glowing solid BLUE, it is now safe to ❏
connect the flight battery to the 5-in-1 unit.
With battery power applied to the 5-in-1 unit, the status indicator LED should ❏
glow solid BLUE within a few seconds.
Note: It is extremely important that you do not move, sway or pretend to fly the
helicopter once the flight battery is connected because the initialization
process and calibration of the gyro has begun. If you do move the
helicopter before the LED is solid BLUE, disconnect the flight battery from
the 5-in-1 unit and repeat the initialization process.
When the status LED becomes solid BLUE, the control unit is initialized and ❏
ready for flight. Also, as long as you set the throttle stick and trim to the correct
positions during the initialization process, the ESCs/motors will now be armed.
Use caution as both rotor blades will now spin with throttle stick input.
Note: If the status LED does not become solid BLUE, please review the following:
If after BLUE status LED becomes solid, but you have no control of the •
motors, you have a positive Radio Frequency (RF) link between the transmitter
and receiver, but the throttle stick and throttle trim may not be set to the correct
positions. Check that the throttle stick is in the lowest possible position, and the
throttle trim is set to the middle or a lower than the middle position. If you now
have control of the motors, proceed to the next step of the checklist.
If BLUE status LED is off completely, you do not have a positive RF link between •
the transmitter and receiver. Check that the transmitter has been powered on
and the LED indicator on the transmitter is glowing solid red. If the transmitter is
powered on and functioning properly, disconnect the flight battery from the 5-in-1
unit, then reconnect it. The 5-in-1 unit should initialize and arm properly.
Once you place the helicopter in a safe area, free of obstructions, and are clear of
the rotor blades, you can safely power up the model to check for proper operation of
the motors.
Advance the throttle stick upward slowly, just until both rotor blades begin to spin.
DO NOT attempt to fly the helicopter at this time. Note the direction each of the rotor
blades spins. When viewed from the top, the upper main rotor blades should spin
counterclockwise and the lower main rotor blades should spin clockwise. If either set
of rotor blades is operating in the wrong direction, disconnect the battery and reverse
the polarity of the corresponding motor’s input power leads.
After confirming the rotor blades rotate in the correct direction, confirm that both
rotor blades respond properly to rudder control inputs.
With the rotor blades spinning at a low level of power, move the rudder (left-hand)
stick all the way to the right. This should cause the speed of the upper main rotor
blade to increase, and the speed of the lower main rotor blade to decrease.
Next, move the rudder stick all the way to the left. This should cause the speed of
the lower main rotor blade to increase and the speed of the upper main rotor blade