Hello, landlord, this usually has a rotary knob on the projector.
Master, look here http://detail.zol.com.cn/354/353730/param.sh... [Detailed]
First, make sure your settings are correct and the operation method is correct? Whether the signal input is correct. If all the above is correct, it may be your machine's signal processing power [Detailed]
Go to Ricoh's official website: http://www.ricoh.com.cn/download/ Download it
ZOL certification Ricoh (China) Investment Co., Ltd
First level certification
Same brand, same projection technology
Same brand, same product type
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High praise rate: 86%
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Same price, same brand, same product type