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Appendix A
Q1. There is not menu output or only has live image display.
Solution: Check up whether other devices can display menu or long press Exit/ESC
button to wait for login dialog box to appear.
Q2. NVR cannot start after the boot.
Possible Reasons:
1)
The power supply is not correct.
2)
The contact of power switch is not good.
3)
The power switch is bad.
4)
Go wrong during the upgrade.
5)
The HDD or hard drive line has been damaged.
6)
The front panel malfunctions.
7)
The mainboard of NVR is bad.
Q3. A few minutes later, NVR automatically reboot or often freezes.
Possible Reasons:
1)
The supply voltage is instable or too low.
2)
There have some bad sectors on your disk, or the hard drive line has been
damaged.
3)
The power is not enough.
4)
The video signal is not stable.
5)
Poor cooling; too much dust; so bad for the operating environment.
6)
Hardware failure.
Q4. Why can't find HDD after the boot?
Possible Reasons:
1)
The power line of HDD is disconnected.
2)
The cable of HDD is bad.
3)
The HDD is damaged.
4)
The SATA interface on the motherboard is bad.
Network Video Recorder User Manual
FAQ
90
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