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TROUBLESHOOTING
After turning on, the DVR can not switch on normally.
Possible reasons:
• The power supply is damaged.
• Power cable is damaged.
• Firmware is outdated.
• The hard disk is damaged.
• The DVR internal power board is damaged.
The DVR reboots automatically or frequently stops working after booting up for a few minutes
Possible reasons:
• The input voltage is not stable or too low.
• The hard disk or the hard disk cables are damaged.
• The front-end video signal is not stable.
• Poor heat dissipation, too much dust, bad physical environment for the DVR.
• DVR hardware is damaged.
Cannot detect hard disk after turning on power.
Possible reasons:
• The hard disk power supply cable is not connected.
• The hard disk cables are damaged.
• The hard disk is damaged.
• The HDD has failed.
• The SATA port of the main board is damaged.
No video output in single channel, multiple channels, or all channels.
Possible reasons:
•
Firmware is out of date. Upgrade the firmware.
• The image brightness is all 0. Please restore the default setup.
• There is no video input signal or the signal is too weak.
• The DVR hardware is damaged.
• Camera power supply damaged or unplugged.
Real-time image problems such as serious distortion of the image, color, or brightness, etc.
Possible reasons:
• The DVR is not matched with the impedance of the monitor.
• The video transmission distance is too far or the attenuation of video transmission cable is too
big.
• The DVR’s color and brightness settings are wrong.
Cannot find video files in local playback.
Possible reasons:
• The hard disk is damaged or no video data.
•
Upgrade firmware which is different from the original firmware files.
•
The video files you want to see are overwritten.
