TECHVIEW QM-3580, User Manual

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7
Method
1 Change to another channel or source
2 Check if the video line is connected
3 Check if the audio line is connected
4 Possible interference with another electrical product
5 Adjust the fine tuning setting
6 Adjust the luminance setting
7 Adjust the contrast ratio setting
8 Adjust the colour setting
9 Check the systems settings to see if it is set correctly
10 Check if the power is connected and turned on
Cleaning Methods:
1. Please wipe dust and clean particles by using a clean lint free cloth.
2. If it is still not clean, please use a proper screen cleaning liquid solution and cloth.
Wipe it dry after cleaning it.
3. Rubbing or knocking the housing or LED screen with hard objects might cause
scratches.
Safety:

Notice and observe all the warnings and illustrations.

Do not adjust, maintain or modify if you are not a qualified person.

Do not open or remove the rear cover, box or cover board of the product. Please
contact the dealer or after-sales service center when needed to check internally.

Do not squeeze or cut the power cable, especially on the plug, outlet or the place
where the cable extends out of the product.

Do not put the product in inflammable or corrosive environments which might cause
fire or damage the product.

Please cut off power or the connecting line immediately if there is smoking, off-odour
or abnormal noise. Contact the after-sales service center to maintain after confirming
there is no more smoking.