NVR User Manual
49
5 FAQ
1. Why does the host fail to start after the power supply is connected?
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Check whether the power switch on the back of the host is turned on.
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Check whether the startup operation is correct.
2. Why is there no display on the monitor? Why does the screen jitter?
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Check whether the device is powered on. After power‐on, the POWER indicator on the front
panel will be lit.
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Check whether the VGA cable is connected properly.
3. Why do color casts occur on the screen?
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Check whether the VGA cable is connected properly and whether the VGA cable is intact.
4. Why does blank screen occurs after the host starts? Why is there no channel title on the
screen?
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Access the channel setting screen and check whether local blocking is enabled. If yes, restore it
to the default setting. Alternatively, access the default setting screen and restore all options to
the default settings.
5. Why does the blocking effect occur during record playback on the host?
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Record parameters are not set properly, reducing the record quality.
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Bad sectors occur on the hard disks.
6. Why is there no record data available when manual recording is enabled?
●
Check whether the search criteria are correct. Ensure that manual recording is selected before
you search for and play a record.
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Ensure that hard disks are formatted into data areas.
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Ensure that at least one read/write disk is available.
7. Why cannot scheduled recording be enabled? Why is there no record data within the
scheduled recording time period?
●
The scheduled recording time period is not set properly. The start time must be earlier than the
end time.
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The power supply is accidentally disconnected during in the scheduled recording time period.
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The required data is overwritten.
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Physical damage or logical errors occur on the hard disks. As a result, data cannot be displayed
properly.
8. Why cannot alarm recording be enabled?
