Faq - Dahua NVR52-4KS2 Series User Manual

Questions
The Device failed to start
properly.
The Device automatically shuts
down or stops running.
The Device cannot detect HDD.
There is no video output in all
channels.
I cannot find local records.
Distorted recorded videos.
Time display is not correct.

8 FAQ

Reasons
Incorrect input power.
●
Incorrect connection of the power cord.
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Damaged power switch.
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Wrong program.
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Damaged HDD.
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Damaged mainboard.
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Unstable or insufficient input voltage.
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Insufficient button power.
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Improper operating environment.
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Hardware error.
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Damaged HDD or HDD ribbon.
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Loose connection of HDD cable.
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Damaged SATA port.
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Program version is not correct.
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Brightness is 0.
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Hardware error.
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Damaged HDD or HDD ribbon.
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Program version is not correct.
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The recorded file has been overwritten.
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The recording function has been disabled.
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Video quality setup is too low.
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Program read error, bit data is too small. There is mosaic in
●
the full screen. Restart the NVR to solve this problem.
HDD data ribbon error.
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HDD malfunction.
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NVR hardware malfunctions.
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Setup is not correct.
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Battery contact is not correct or voltage is too low.
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Crystal is broken.
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User's Manual