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D.
The SATA port of main board is damaged.
4.
There are no video outputs in single channel, multiple channels and
all channels.
Possible reasons:
A.
The program is not matched. Please update the program.
B.
The image brightness is all set to 0. Please restore the default setup.
C.
There is no video input signal or the signal is too weak.
D.
The channel protection or the screen protection is set.
E.
The hardware of the DVR is damaged.
5.
Real-time image problems such as the image color or the brightness
distortion.
Possible reasons:
A.
When using the BNC output, the option between the N mode or PAL
mode is wrong and the image becomes black and white.
B.
The DVR does not match the monitor impedance.
C.
The video transmission distance is too far or the loss of the video
transmission line is too large.
D.
The color and brightness setting of the DVR is wrong.
6.
I cannot find the video files in local playback mode.
Possible reasons:
A.
The data line of the hard disk is damaged.
B.
The hard disk is damaged.
C.
Update the different program with the origin program files.
D.
The video files to look up are covered.
E.
The recording is not on.
7.
The local video is not clear.
Possible reasons: