Uniden GDVR 42 Series Owner's Manual page 72

no video output in single channel, multiple channels and all
channels.
Possible reasons:
Video format incorrect. Please ensure it is set corerctly, either PAL or
•
NTSC. (Australia = PAL).
The image brightness is all 0. Please restore the default setup.
•
There is no video input signal or the signal is too weak.
•
The hardware of the DVR is damaged.
•
real-time image problems such as serious distortion of the image
color or the brightness, etc.
Possible reasons:
The DVR does not match with the impedance of the monitor.
•
The video transmission distance is too far or the attenuation of video
•
transmission cable is too big.
The setting of color and brightness for the DVR is wrong.
•
cannot find video files in local playback.
Possible reasons:
Something is wrong with the data cable or the jumper of the hard disk
•
The hard disk is damaged or no video data.
•
Record function has been disabled. Please click Record icon under Setup
•
to enable it.
The video files you want to see have been overwritten after a recent disk
•
format.
Blurred screen when viewing the local video.
Possible reasons:
The video quality is set too low.
•
The program data reads wrongly, always become normal after rebooting
•
up the DVR.
Something is wrong with the data cable or the jumper of the hard disk
•
The hard disk is damaged.
•
The hardware of the DVR is damaged.
•
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