Dahua L Series

User's Manual
422
7 FAQ
Questions Solutions
NVR cannot boot up properly.
●
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. Upgrade to the latest version to
solve this problem.
●
Front panel error.
●
Main board is damaged.
NVR often automatically shuts
down or stops running.
●
Input voltage is not stable or it is too low.
●
HDD malfunction or something wrong with the ribbon.
●
Button power is not enough.
●
Front video signal is not stable.
●
Working environment is too harsh, too much dust.
●
Hardware malfunction.
System cannot detect hard
disk.
●
HDD is broken.
●
HDD ribbon is damaged.
●
HDD cable connection is loose.
●
Main board SATA port is broken.
There is no video output
whether it is one-channel,
multiple-channel or all-
channel output.
●
Program is not compatible. Upgrade to the latest version.
●
Brightness is 0. Restore factory default setup.
●
Check your screen saver.
●
NVR hardware malfunctions.
I cannot search local records.
●
HDD ribbon is damaged.
●
HDD is broken.
●
Upgraded program is not compatible.
●
The recorded file has been overwritten.
●
Record function has been disabled.
Video is distorted when
searching local records.
●
Video quality setup is too low.
●
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.
●
HDD malfunction.
●
NVR hardware malfunctions.
Time display is not correct.
●
Setup is not correct.
●
Battery contact is not correct or voltage is too low.
●
Crystal is broken.