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3.
What if there is no output of single-channel, multi-channel or all-channel video?
Check the adapter of the camera to make sure it is securely connected.
Check the cable for connecting video input/output in the back panel of DVR to
make sure it is securely connected.
Insert the video source directly into the display device and check if the video source
is causing the problem.
Check the brightness of the picture and restore the original default setting.
Check to see if there is no video input signal or if the video input signal is too weak.
Make sure the display settings have been configured correctly.
The hardware of DVR could be defective – take the device to a certified technician
to have it examined.
4.
What if the DVR cannot record after startup and the interface is showing "
"?
Make sure power adapter is a DC-12V.
Make sure HDD has been properly formatted.
Make sure the power and data connection cables of the HDD are connected and
undamaged.
The HDD could be defective – test it with another device to find out.
The SATA port may be not working – have a qualified technician examine it to
find out.
5.
What if the DVR is having problems with real-time images, such as serious color or
brightness distortion?
If PAL or NTSC has not correctly selected on the BNC output, the images will be
in black and white.
Make sure the DVR is compatible with the monitor being used.
Make sure the video transmission distance is not too far.
Try manually adjusting the settings of the DVR color, brightness, and so on.
6.
What if there is no sound?
Check that the sound box or speaker functions. Also check for possible short-
circuiting problems.
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