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Abnormal
phenomenon
33．Network
connection failed
Cause analysis
3. No response when the projector
is inserted into the large screen (no
progress bar)，
1. Network cable connection
problem
2. DHCP server allocation failed
Terms of settlement
3. Check whether the screen
projection software under the
Android interface matches the
screen projector, and Make sure
large screen hotspots are 5G
hotspots.
4. Re -upgrade the software
5. Replace the new machine
1. Check whether the network
cable is firm
2. Check whether the device is
connected to the local area network
and use the IP assigned by DHCP
15
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