Dahua NVR2104-I2, User Manual

Page: 443 / 459

8 FAQ
Questions Reasons
The Device failed to start
properly.
●
Incorrect input power.
●
Incorrect connection of the power cord.
●
Damaged power switch.
●
Wrong program.
●
Damaged HDD.
●
Damaged mainboard.
The Device automatically shuts
down or stops running.
●
Unstable or insufficient input voltage.
●
Insufficient button power.
●
Improper operating environment.
●
Hardware error.
The Device cannot detect HDD.
●
Damaged HDD or HDD ribbon.
●
Loose connection of HDD cable.
●
Damaged SATA port.
There is no video output in all
channels.
●
Program version is not correct.
●
Brightness is 0.
●
Hardware error.
I cannot find local records.
●
Damaged HDD or HDD ribbon.
●
Program version is not correct.
●
The recorded file has been overwritten.
●
The recording function has been disabled.
Distorted recorded videos.
●
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.
NVR cannot control PTZ.
●
Front panel PTZ error.
●
PTZ decoder setup, connection or installation is not correct.
●
Cable connection is not correct.
●
PTZ setup is not correct.
●
PTZ decoder and NVR protocol is not compatible.
●
PTZ decoder and NVR address is not compatible.
●
When there are several decoders, add 120 Ohm between the
PTZ decoder A/B cables furthest end to delete the
reverberation or impedance matching. Otherwise the PTZ
control is not stable.
User's Manual
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