76
77
A.1 TROUBLESHOOTING
1. The NVR does not boot up properly
Possible Causes:
a. Input power is not correct, check power supply.
b. Power switch button is damaged.
c. Updated firmware using wrong file.
d. Hard drive malfunction or something wrong with hard drive cable.
e. Front panel error.
f. Main board is damaged.
2. NVR often automatically shuts down or stops running.
Possible Causes:
a. Input voltage is not stable or it is too low.
b. Hard drive malfunction or something is wrong with the cable.
c. Device is not getting enough power.
d. Front video signal is not stable.
e. Working environment is too hot, or too much dust.
f. System board malfunction.
3. System cannot detect hard drive.
Possible Causes:
a. No hard drive is installed
b. Hard drive is damaged.
c. Hard drive cable connection is loose.
d. Main board SATA port is damaged.
4. There is no video output to one or more channels.
Possible Causes:
a. Updated firmware using wrong file.
b. Brightness is 0. Please restore factory default setup.
c. There is no video input signal or it is too weak.
d. Check privacy mask setup.
e. Combo NVR hardware malfunctions.
5. Real-time video color is distorted.
Possible Causes:
a. When using BNC output, NTSC and PAL setup is not correct. The real-time video
becomes black and white.
b. NVR and monitor resolution settings are not compatible.
c. Video cable is too long signal is becoming degraded.
d. Combo NVR color or brightness setup is not correct.
6. Cannot search local records.
Possible Causes:
a. HDD ribbon is damaged.
b. HDD has failed.
c. The recorded file has been overwritten.
d. Record function has been disabled.
7. Video is distorted when searching local records.
Possible Causes:
a. Video quality setting is too low.
b. Program read error, bit data is too small. There is mosaic in the full screen. Please restart
the NVR to solve this problem.
c. Hard drive data cable error.
d. Hard drive malfunction.
e. NVR hardware malfunction.
APPENDIX
8. There is no audio when monitoring.
Possible Causes:
a. Channel with audio is not full screen, make the channel you want to hear audio on full
screen.
b. Audio cable is damaged.
c. Combo NVR hardware malfunction.
9
.
There is audio when monitoring but there is no audio when system plays back
.
Possible Causes:
a. Setup is not correct. Please enable audio function
b. Corresponding channel has no audio input.
10. Time display is not correct.
Possible Causes:
a. Setup is not correct
b. Battery contact is not good or voltage is too low. Replace battery.
c. Crystal is broken.
11. Motion detection function does not work.
Possible Causes:
a. Period setup is not correct.
b. Motion detection zone setup is not correct.
c. Sensitivity is too low.
12. Cannot log in client-end or web.
Possible Causes:
a. For Windows 98 or Windows ME user, please update your system to Windows XP or
later.
b. ActiveX control has not been enabled.
c. Video card driver on computer may need to be upgraded.
d. Network connection error.
e. Network setup error.
f. Password or user name is invalid.
13. There is only mosaic no video when previewing or playing back video file remotely.
Possible Causes:
a. Network bandwidth is not sufficient.
b. Computer does not have enough resources to handle video flow.
c. There is multiple-cast group setup in combo NVR. This mode can result in mosaic.
Usually we do not recommend this mode.
d. There is privacy mask or channel protection setup.
e. Current user does not have monitoring rights.
f. NVR local video output quality is not good.
14. Network connection is not stable.
Possible Causes:
a. Network is not stable.
b. IP address conflict.
c. MAC address conflict.
d. PC or combo NVR network card is not good.
15. Burn error /USB backup error.
Possible Causes:
a. System uses too much CPU resources. Try stopping recording first and then begin
backup.
b. Data amount exceeds backup device capacity. It may result in burner error.
c. Backup device is not compatible.
d. Backup device is damaged.
