(1)What should be done if the device fails to respond when powered on or shuts down abnormally?

(2) What should be done if the lower centre camera or laser cannot be activated?

(3) No data displayed for the compensator?

(4) Angle measurement anomaly or vertical angle displaying negative values?

(5) Unable to measure distance or experiencing significant measurement errors?

(6) What should be done if I cannot connect to the radio station?

(7) Optical tilt survey exhibits low accuracy and significant fluctuations.