Dangbei Mars User Manual page 16

Troubleshooting
1.No audio output
a. Check if the remote control "Mute" button is pressed.
b. Check if the projector interface "HDMI ARC" or Bluetooth is connected to an external audio device.
2. No image output
a. Press the power button on the top cover. The power button indicator light will turn off if the projector is powered on successfully.
b. Ensure that the power adaptor has power output.
3. No network
a. Enter settings, and check the network connection status in the network option.
b. Ensure that the network cable is correctly inserted to the projector interface "LAN".
c. Ensure that the router is correctly configured.
4. Blurry Image
a. Adjust the focus or keystone.
b. The projector and screen/wall must be positioned with an effective distance.
c. Projector lens is not clean.
5. Non-rectangular Image
a. Place the projector perpendicular to the screen/wall if keystone correction function is not used.
b. Use the keystone correction function to adjust the display.
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