Appendix A Troubleshooting, Daily
Maintenance and Glossary
22.
Real-time video color is distorted
Possible reasons:
•
When using BNC output, the NTSC and PAL setup is not correct. The real-time video
displays in monochrome
•
NVR and monitor resistance is not compatible
•
Video transmission is too long or is excessively degraded
•
NVR color or brightness setup is not correct
23.
Motion detection function does not work
Possible reasons:
•
Period setup is not correct
•
Motion detection zone setup is not correct
•
Sensitivity is too low
•
For some versions, there is a hardware limitation
24.
Remote control does not work
Possible reasons:
•
Remote control address is not correct
•
Distance is too far or control angle is too small
•
Remote control battery power is low
•
Remote control is damaged or NVR front panel is damaged
25.
Cannot connect to the IP Camera
Possible reasons:
•
The IPC has not booted up
•
IPC network connection is not online
•
The IPC’s IP is in the blacklist
•
The device has to too many connected cameras
•
The IPC port value and time zone are not the same as for the NVR
•
Current network environment is not stable
26.
After I set the NVR resolution to 1080P the monitor does not display
Possible solution—Restore NVR resolution to the default setup:
•
Shut down the device and then reboot. When you reboot, press the
Fn
button at the
same time and then release after 5 seconds.
27.
My admin account has been changed and I cannot log in
Possible solution:
•
Use telnet and then input the following command
：
cd /mnt/mtd/Config/
rm -rf group
rm -rf password
•
Reboot the device to restore the default password
NVR7400 Series User Guide
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