Amcrest General 720P(V2) Mini 1U Series User Manual page 175


Backup device is not compatible.

Backup device is damaged.
17. Keyboard can not control DVR.
Here are a few possibilities:

DVR serial port setup is not correct

Address is not correct.

When there are several switchers, the power supply is not enough.

Transmission distance is too far.
18. Alarm signal can not been disarmed.
Here are a few possibilities:

Alarm setup is not correct.

Alarm output has been open manually.

Input device error or connection is not correct.

Some program versions may have this problem. Please upgrade your system.
19. Alarm function is null.
Here are a few possibilities:

Alarm setup is not correct.

Alarm cable connection is not correct.

Alarm input signal is not correct.

There are two loops connected to one alarm device.
21. Recording storage period is not enough.
Here are a few possibilities:

Camera quality is too low. Lens is dirty. Camera is installed against the light. Camera aperture
setup is not correct.

HDD capacity is not enough.

HDD is damaged.
22. Can not playback the downloaded file.
Here are a few possibilities:

There is no media player.

No DirectXB8.1 or higher graphic acceleration software.

There is no DivX503Bundle.exe control when you play the file transformed to AVI via media
player.

No DivX503Bundle.exe or ffdshow-2004 1012 .exe in Windows XP OS.
23. Forgot local menu operation password or network password
Please contact your local service engineer or our sales person for help. We can guide you to solve this
problem.
24. When I login via HTTPS, a dialogue says the certificate for this website is for another address.
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