386
7 FAQ
Questions
Solutions
NVR can not 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. Please 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 can not 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. Please upgrade to the latest version.
Brightness is 0. Please restore factory default setup.
Check your screen saver.
NVR hardware malfunctions.
I can not 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. Please 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.
Summary of Contents for nvr4208-8p
Page 1: ...Dahua Network Video Recorder User s Manual V 2 7 0 ...
Page 160: ...145 Figure 3 4 3 5 5 NVR41HS W S2 Series Please refer to Figure 3 5 for connection sample ...
Page 171: ...156 Figure 3 18 3 5 19 NVR78 Series Please refer to Figure 3 19 for connection sample ...
Page 172: ...157 Figure 3 19 3 5 20 NVR78 16P Series Please refer to Figure 3 20 for connection sample ...
Page 173: ...158 Figure 3 20 3 5 21 NVR78 RH Series Please refer to Figure 3 21 for connection sample ...
Page 174: ...159 Figure 3 21 3 5 22 NVR70 Series Please refer to Figure 3 22 for connection sample ...
Page 175: ...160 Figure 3 22 3 5 23 NVR70 R Series Please refer to Figure 3 23 for connection sample ...
Page 176: ...161 Figure 3 23 3 5 24 NVR42V 8P Series Please refer to Figure 3 24 for connection sample ...
Page 177: ...162 Figure 3 24 ...
Page 243: ...228 Figure 4 89 Figure 4 90 ...
Page 244: ...229 Figure 4 91 Figure 4 92 ...
Page 259: ...244 Figure 4 110 Figure 4 111 ...
Page 260: ...245 Figure 4 112 Figure 4 113 ...
Page 261: ...246 Figure 4 114 Figure 4 115 ...
Page 263: ...248 Figure 4 117 Figure 4 118 ...
Page 355: ...340 Figure 5 55 Figure 5 56 ...
Page 356: ...341 Figure 5 57 Figure 5 58 Figure 5 59 ...
Page 367: ...352 Figure 5 73 Figure 5 74 ...
