1. CHECK THE KEY SWITCH IS IN THE "ON" POSITION. IF IT IS IN THE "OFF" POSITION, TURN THE KEY SWITCH TO THE "ON" POSITION.

2. CHECK IF THE BATTERY IS FULLY CHARGED. IF THE BATTERY VOLTAGE IS LOWER THAN 22V, THE MACHINE WILL NOT WORK PROPERLY. PLEASE CHARGE IT IN TIME.

3. CHECK IF THE LCD SHOWS FAULT CODES. IF ANY FAULT CODE APPEARS, PLEASE CONTACT YOUR LOCAL DEALER OR THE MANUFACTURER DIRECTLY.

4. CHECK IF THE MACHINE PROGRAM IS CORRECT. AS THE FUNCTIONS OF EACH MODEL ARE DIFFERENT, THE PROGRAM CANNOT BE USED UNIVERSALLY. IF THE LCD PROGRAM IS INCONSISTENT WITH THE MACHINE MODEL WHEN BOOTING, IT WILL NOT WORK PROPERLY. PLEASE CONTACT YOUR LOCAL DEALER OR THE MANUFACTURER DIRECTLY.