2.Appearance confirmation:
2.1 Confirm the appearance of charging box
2.1.1 The USB interface of charging box is blocked by foreign matter.
Please use tweezers and cotton swabs to clean the foreign matter
。（
If cleaning is difficult,
please use alcohol to assist cleaning
）
a.
Use electric light or mobile phone flash to check the appearance of the USB interface for
foreign matter or dirt.
b.
Remove the foreign matter or dirt by using tweezers and cotton swabs
c.
Confirm whether the foreign matter and dirt can be removed. If it can be removed, the
machine can be used normally.
d.
If the foreign matter cannot be removed, please send to after-sale service center for
repair or replacement
Responsibility judgment: Customer Responsibility, such problem is generally caused by
improper usage.
2.1.2
、
The USB interface of charging box is rusted and corroded.
a.
Use electric light or mobile phone flash to check the appearance of the USB interface, and
check whether there is rust.
