Dahua HDCVI series, User Manual

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313
7 FAQ
1. DVR can not boot up properly.
There are following possibilities:

Input power is not correct.

Power connection is not correct.

Power switch button is damaged.

Program upgrade is wrong.

HDD malfunction or something wrong with HDD ribbon.

Seagate DB35.1
，
DB35.2
，
SV35 or Maxtor 17-g has compatibility problem.
Please upgrade to the latest version to solve this problem.

Front panel error.

Main board is damaged.
2. DVR often automatically shuts down or stops running.
There are following possibilities:

Input voltage is not stable or it is too low.

HDD malfunction or something wrong wit the ribbon.

Button power is not enough.

Front video signal is not stable.

Working environment is too harsh, too much dust.

Hardware malfunction.
3. System can not detect hard disk.
There are following possibilities:

HDD is broken.

HDD ribbon is damaged.

HDD cable connection is loose.

Main board SATA port is broken.
4. There is no video output whether it is one-channel, multiple-channel or
all-channel output.
There are following possibilities:

Program is not compatible. Please upgrade to the latest version.

Brightness is 0. Please restore factory default setup.

There is no video input signal or it is too weak.

Check privacy mask setup or your screen saver.

DVR hardware malfunctions.
5. Real-time video color is distorted.
There are following possibilities:

When using BNC output, NTSC and PAL setup is not correct. The real-time video
becomes black and white.