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*Common Troubleshooting Problems and Quick Fixes*
FIRST CHECK (Most Common Fix)
Make sure cables are fully plugged in at BOTH ends (Apple TV to the laptop to the Multimedia Wall Box).
If you are unsure, unplug the cables and plug them back in firmly.
The Multimedia Wall Box is located near the teacher's desk or by the projector/TV
"Why is nothing showing on the projector or TV?"
Turn the projector/TV OFF and ON again
Check that the display is set to the correct HDMI input using the remote
Select the correct HDMI / Apple TV input
Make sure the HDMI cable is FIRMLY and FULLY PLUGGED IN at BOTH ends.
"Screen Mirroring says 'Connected', but no image appears."
Turn screen mirroring OFF and then ON again.
Wake Apple TV again with the remote control.
Wait 10 seconds for the connection to sync.
If the issue continues, shut down your laptop and restart it.
"The screen on the projector disconnects, freezes or lags."
Keep the laptop OPEN and make sure it is not in sleep mode.
Move closer to the classroom Wi-Fi access point
Stop Wireless AirPlay using Apple TV, and switch to wired HDMI cable connection
Check all connections and make sure the cabless are firmly plugged in.
Turn the projector off completely, then turn it back on.
"Audio plays through the laptop instead of the projector or TV."
The sound output may still be set to the MacBook speakers.
Go to Sound settings and select the correct output device.
Check the volume level on the projector or TV.
Make sure the Apple TV or projector is selected as the audio output.
Try disconnecting and reconnecting the HDMI cable.
Quick Tip:
Sometimes, when an HDMI cable is connected after the laptop is already turned on, the laptop may not automatically switch the audio output.
Connect the HDMI cable first.
Then restart the laptop.
"A blue light is flashing on the projector, but I don't see anything on the screen."
There are four LED indicator lights on the projector. Check which light is flashing and refer to the image below.
This is often caused by a signal or connection issue.
Make sure all HDMI cables are firmly plugged in.
Turn off the projector completely and unplug the power cable from the back of the projector. Plug it back in, then turn the projector on again.
Recommended Classroom Projector Troubleshooting Order
Restart the projector.
Unplug the projector and perform a power reset.
Check the HDMI cable.
Try another laptop or device.
Contact Tech Support if:
The indicator light continues flashing after trying the steps above.
The projector does not respond to the buttons.
The screen continues to freeze randomly.
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