Error message "GNSS antenna undetected" is displayed.

Issue

Smart Construction 3D Machine Guidance error "GNSS antenna undetected" appears on the tablet app.

Cause

• The controller cannot detect the signal from the GNSS antenna.

How to deal

Please check the GNSS status.
The status of the Main antenna and Sub antenna will be displayed.
If it is defective, "INVALID" will be displayed.

Firmware reset
Tap the Menu（Gear icon ） ans select the  GNSS Settings in Menu. 


Tap the GNSS Basic Settings in GNSS setting and  tap the Hard Reset button.

Reconnecting the cables
Disconnect the cables connected to the controller and reconnect them.

Restart the engine.
If the problem is not resolved after restarting the engine
If the problem persists after restarting the engine, there may be a defective antenna, antenna cable disconnection, poor contact, etc. Please contact your distributor.

We recommend checking the firmware version in the controller.
To check the firmware version, follow the procedure below.

Segmental Diagnosis of Antenna Cable and Antenna Failures [For Service Personnel].

It is recommended to diagnose the malfunction through the antenna cable, because removing and installing the antenna may move the fixed bracket.

When an error occurs in the main antenna

Confirmation	Error contents	Failure
Step1 Replace the main and sub antenna cables near the controller	No change INVALID Error in main antenna	Possible controller failure
	Change INVALID Error on the sub antenna	Possible failure of the main antenna itself or the cable of it. Go to Step2
Step2 Disconnect the cables from each antenna and replace the cables of the main antenna and the sub-antenna.	Main antenna is in INVALID error	Possible failure of the main antenna
	INVALID Error with the sub antenna	Possible sub antenna cable failure

Step1

Step2

When an error occurs in the sub antenna 

Confirmation	Error contents	Failure
Step1 Replace the main and sub antenna cables near the controller	Change INVALID Error in main antenna	Possibility of cable failure in the sub antenna terminal or in the sub antenna itself. Step 2
	No change INVALID Error on the sub antenna	Possible controller failure
Step2 Disconnect the cables from each antenna and replace the cables of the main antenna and the sub-antenna.	Main antenna is in INVALID error	Possible sub antenna cable failure
	INVALID Error with the sub antenna	Possible failure of the main antenna

Step1


Step2