Step 1: Make sure not power on the machine.
    Step 2: Open the right shell of the machine refer to this video (only require watching from 0:00~1:44).
    Step 3: The high and low voltage modes can be switched by adjusting the switch of the laser power, please refer to the following animation (The number 115 represents 110V voltage, 230 represents 220V voltage). If the local voltage is 220v, need pull the switch from 115 side to 230 side, vice versa.
    【Note： the switch must be pulled to the correct power according to the local power, otherwise, it may cause damage on laser power or mainboard. Normally, there is no need to switch it since the machine was switched to correct power before sending out to corresponding country.】
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