Troubleshooting - ViewSonic LDP216-121 User Manual

4k uhd all-in-one direct view led display
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Troubleshooting

Problem or Issue
Remote Control is not
working
The unit turns off
unexpectedly
The power indicator
is off, and there is no
response
The display does not
recognize the USB
storage device
1. Check whether something is obstructing the
display's remote control receiver.
2. Check whether the battery polarities in the remote
control are installed correctly.
3. Check whether the batteries need to be replaced.
1. Check whether Sleep mode is enabled.
2. Check if there is a power outage in your area.
3. Turn on the display, provide an active signal, and
see if the problem is with the signal or external
control system.
1. Ensure the power cable is connected and not loose.
2. Check that the power outlet is functioning properly
and meets the required electrical requirement.
1. Ensure the drive is either formatted for FAT32 or
NTFS.
2. If the USB storage device needs external power,
connect its power adapter to an electrical outlet.
127
Possible Solutions

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