Osoto NV-1920 - Manual (Page 23)

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No image
no sound
Check power cable, connect again
Press power in to electricity
Audio cable or RGB cable connected in wrong way,
pls connect again.
Input/output connect correctly or not?
CCD/CMOS cover has not been taken off
Image is
not clear
Distance between things and CCD/CMOS is too
close, so cannot focus normally, to adjust and
make it more than 330mm.
Surface of things are too brilliance or reflects, adjust
light darker
CCD/CMOS is dirty？Pls clean CCD/CMOS or
short-sighted lens underside
Noise-wa
ve is
exist
There is noise-wave when enlarge image in
extremely dark environment. Pls turn on assisted
lamps
Image is
too dark
Pls turn on assisted lamps
Pls adjust brightness, increase brightness
Buttons
on panel
are
invalid
Press two buttons synchronically or press too
slowly,
visualizer will be no reply. One time one
button, make interval time longer when press two
buttons
Remote
controller
no
response
Confirm there is no other things between visualizer
and remote controller to effect
Confirm distance between visual presenter and
remote controller is within 30M
Pls check battery fine and in correct connection or
used out yet?
Micropho
ne no
sound
Check audio cable is good and correct or not
Check microphone work well or not
Check volume of microphone is lowest or not
☆ Problems and Solutions:
Problems Analysis and solution