Autel AutoLink AL539B with unique patented One-Click I/M Readiness Key, circuit test, starting and charging systems tests, battery test, TFT color display, and built-in speaker. AL539b will streamline automotive service and help ensure rapid, accurate diagnosis and timely repair.
The Tool Self-test function checks if the display, LED lamps and keyboard are working properly.
A. Display test
The Display Test function checks if the LCD display is working normally.1) From System Setup screen, use the UP/DOWN scroll button to select Tool Self-test, and press the OK button.2) Select Display Test from Tool Self-test menu and press the OK button to start test.
3) Look for missing spots in the red, green, blue, black and white LCD display.4) When completed, press the ESC button to exit. continue reading