Troubleshooting - ViewSonic VFM820-50 User Manual

Common : Press the [▼] button to select Common Setting, and then press
[
1) Language : Select the on-screen language, press [
2) Theme color : There are 7 active selection colors, press [
select.
3) Auto brightness : On / off, press [
4) Night mode : On / off, press [
5) Default : press [
6) Product info : check product information. Press [
hardware versions.

Troubleshooting

Problems
No sound.
Cannot power on, even when the device
is connected to an electrical outlet.
Screen is off or too dark.
Screen freeze and does not respond to
control anymore.
Cannot playback pictures.
Failed to read memory card.
Return to the Main Menu automatically
when playing content.
] to view "Common" Settings.
] to restore factory settings.
] or [◄/►] to select.
] or [◄/►] to select.
] to verify software and
Solutions
Make sure the content has sound and check
whether the sound setting is set to mute or set
to a low level.
Check whether the AC power adapter rating
is correct, and it is securely plugged to the
device and to an electrical outlet.
Check whether the screen brightness is set to
a low level in the Setup menu.
Unplug the device and plug it again.
Only support pictures in JPEG, JPG format in
baseline.
Check whether memory card is inserted
properly. The notch should be on the left hand
side. Do not force the memory card in. The
maximum capacity of memory card is 32GB.
Restart playing. Note: This device has a self
protection function against sudden system
abnormality.
4
] or press [◄/►] to select.
] or press [◄/►] to