14
EN
Graphic User Interface
Troubleshooting
Problem
Possible Cause
Solution
350 QX3 will not initialize
The quadcopter was moved during initialization
Re-arm the aircraft, being cautious to avoid any movement during
initialization
GPS will not lock
Heavy overcast
Wait for lighter cloud cover and re-lock or disable GPS
Solar fl ares
Wait for disturbance to subside or disable GPS
Aircraft is indoors
Disable GPS
Objects blocking clear access to the sky
(under a metal cover, inside a car, tall buildings, etc...)
Move aircraft to a clear area
Video transmitter nearby
Re-position or remove video transmitter
GPS has reduced resolution
Raised threat level by the U.S. government
Wait for threat level to be reduced or disable GPS
The GPS antenna coaxial cable is nicked, cut,
or otherwise damaged
Replace the GPS antenna
GPS functions not operating
properly
The compass has been exposed to a magnet
Move the aircraft away from the magnetic source. In worst case
scenario, the compass may need to be replaced
The GPS antenna coaxial cable is nicked, cut, or otherwise
damaged
Replace the GPS antenna
The aircraft is behaving erratically
Rebind the aircraft with the GPS function off
Aggressive fl ight
Fly level for a few seconds before using other modes
Motors won’t start
GPS lock has not been acquired
Ensure GPS antenna has clear view of sky and GPS lock has been
acquired
‘Compass error’ is indicated by the LED
See below for troubleshooting ‘compass error’
Incorrect start up procedure
Review start up procedure in manual
Blinking yellow led
‘compass error’ indication
Model is too close to a metal object or metal surface
Move model away from large metal objects or surfaces
Compass needs calibration
Calibrate compass
(
see calibration reference
)
Steady beeping,
motors won’t start
Throttle trim is not centered
Calibrate DX4 transmitter
(AP or RTF version)
Center throttle trim (BNF version)
Won’t hold position in hover
Weak GPS signal
Check GPS antenna mast is extended
Compass needs calibration
Calibrate compass
(
see calibration guide
)
Accelerometers need calibration
Calibrate accelerometers
(
see calibration guide
)
Motors take a long period of
time to shut off after completing
return to home
Pressure calibration is needed
Refer to the Pressure Sensor Calibration section of this manual
If you need to update the fi rmware in your quadcopter, download the PC user
interface* at http://www.bladehelis.com/ProdInfo/Files/350_QX_PC_Interface.zip
Follow the on-screen instructions for installation and operation.
This graphic user interface allows you to monitor systems, adjust system settings
and calibrate sensors.
Sensor Information Screen
• See status of all sensors and speed controls at a glance
• Check battery voltage and accelerometer operation
Calibration Screen
• Calibrate accelerometers and camera gimbal
• Review instructions for compass sensor and DX4 transmitter calibration
• Adjust geo-referenced fl ight boundaries
GPS Screen
• See number of available satellites and signal strength
• Verify latitude, longitude and altitude indications
• Verify GPS accuracy
Device Information Screen
• See programming software version
• See quad fi rmware version and vehicle ID
• Update fi rmware
*Requires USB Interface
(BLH7840)
sold separately.
