Troubleshooting
Power fault
Possible Reason Inspection and Repair
Screen is dark, abnormal or the
machine turns on/off automatically
Battery is empty Charge, replace the built-in lithium battery
Power cord is loose or damaged Replace the power cord
Power adapter failure Replace the power adapter
Power supply circuit failure Replace the mainboard and power adapter board
The AC indicator light is off and
machine cannot be turned on
Power supply problem Replace the adapter, check the supply voltage
Both lights are on, unplug the power
cord then machine turns off
Damaged battery Replacing the built-in lithium battery
Faulty charging circuit Replace the mainboard and power adapter board
Both indicators are off, the machine is
working normally
Indicator light failure
Replace the mainboard, or the indicator components on
the mainboard
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