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22
If at any time during the test the controls do not respond properly, double-check the servo reversing switches
located under the door on the bottom left front of the transmitter . Dip switches 1, 6 and 7 should be positioned as
shown to ensure proper servo reversing .
Note: All other dip switches should also be positioned as shown to ensure proper operation. DO NOT
attempt to fly your Blade CX3 with any of the dip switches set in positions that are not shown.
If the controls still do not respond properly after ensuring that the servo reversing dip switch positions are correct,
you may also check the servo connections on the receiver side of the 3-in-1 unit . These should be positioned as
follows (when viewing the helicopter from behind):
AIL Channel – Servo on the right side of the heli
ELE Channel – Servo on the left side of the heli
Once you have confirmed that the servo connection locations are correct, all controls should be functioning
properly . If you do encounter any problems with your Blade CX3 MD 520N responding properly to the transmitter,
do not fly . Contact the Horizon Support Team at 877-504-0233 .
3-in-1 Control Unit Description, Arming and Motor Control Test
The unique 3-in-1 Control Unit installed on your Blade CX3 MD 520N is a lightweight combination of a main motor
mixer, main motor electronic speed controls, and a heading lock gyro . The 3-in-1 unit also contains a gyro gain
trimmer pot, main motor proportional mix trimmer pot and status LED .
If you should ever need to access the 3-in-1 unit (usually only required if making adjustments to the gyro gain or
main motor proportional mix trimmer pots, as outlined on pages 34–35), you can do so by going through the front
window of the MD 520N scale body .
Note:
It will not be necessary to access the 3-in-1 unit for proper arming and usual operation .
Note:
The 3-in-1 unit has an optional remote gyro gain plug .
Gain Trimmer Pot
Status LED
Motor Plugs
Main Motor Porportional
Mix Trimmer Pot
