Aircraft Led Indicators - Hubsan H507A X4 STAR PRO User Manual

2) Removal: If propellers need to be changed, please uninstall as shown below with a screwdriver.
Propeller A's are paired with motor A shafts and are untightened clockwise. Propeller B's are paired with
motor B shafts and are untightened counterclockwise.
Propeller B
Propeller A
Make sure that the propellers are installed in the correct positions (A to A, B to B).
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Otherwise, the aircraft will not be able to fly normally.
Since the propeller blades are thin and somewhat sharp, it is recommended that
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users wear gloves during installation to prevent accidental scratches.
Please replace damaged propellers.
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1-5 Aircraft LED indicators

H507A has 4 LEDs; the fore/frontal LEDs are blue and the rear LEDs are red. The LED status indications
are defined as follows:
Function LED status indication
Power on and start up All 4 LEDs flash simultaneously
Calib. Compass 1:all 4 LEDs flash clockwise
Compass
Calibration
Calib. Compass 2: LEDs should be flashing in vertical pairs, alternately
Horizontal Calibration All 4 LEDs flash simultaneously
Flight Mode All 4 LEDs are solidly lit
Return to Home Blue LEDs (fore) are solidly lit; red LEDs (rear) will flash slowly
Low Power
Blue LEDs (fore) are solidly lit; red LEDs (rear) flash rapidly
Flight control signal When the flight control signal is lost, the rear LEDs will stay solid while the fore LEDs will
loss warning slowly flash
Propeller A
Propeller B
6
Clockwise
Counterclockwise