Dahua D-XVR8208A-4K-I, User Manual

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FAQ 277
7
FAQ
1. DVR cannot 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 jumper configuration.

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 frequently shuts down or stops running.
There are following possibilities:

Input voltage is not stable or it is too low.
 HDD malfunction or something wrong with jumper configuration.

Button power is not enough.
 Front video signal is not stable.
 Working environment is too harsh, too much dust.

Hardware malfunction.
3. Hard disk cannot be detected.
There are following possibilities:
 HDD is broken.

HDD jumper 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.
 DVR and monitor resistance is not compatible.

Video transmission is too long or degrading is too huge.
 DVR color or brightness setup is not correct.
6. Cannot search local records.