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Why does the projector not respond to any command when powering on or turning off?
When inputting my RS232 commands, why do I get "Illegal Format" in return?
Can I leave my projector turned on 24/7?
Does GP20 USB display function support audio?
Do GP20 support MHL?
How to clean the lens?
May I use QPresenter in my mobile phone?
Please don't place the projector in any of the following environments.
The lamp is not on but the fan remains running, what is happening?
Why is there slight scent of burning or plastic smell when using projectors？
Why I cannot use PointDraw on my ChromeBook?
What kind of file format can be supported by GP20 when using USB reader?
What is the max capacity of an USB memory stick that GP20 can support?
What is LAN Web Control?
Projection is rather blurry, what can I do?
The eco mode is much darker than SmartEco mode. Is it normal?
When connecting an external hard drive to GP20, why the hard drive could not be driven well sometimes ?
Why the keys on upper case don’t work when we select MHL as GP20’s input source
Why the keystone value can not be saved after turning off the projector?