Geeetech A30 Pro User Manual page 28

2) Click "Language" to its interface. See picture (7-19).
3) Click "Screen Cali" to its interface. See picture. (7-20).
4) Click "About" to the device information. See picture (7-21).
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（Picture 7-18）
（Picture 7-19）
（Picture 7-20）
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