Q-See QC40198 User Manual page 135

TROUBLESHOOTING
17. Burn error /USB backup error.
Possible causes:

Burner and combo DVR are in the same data cable.

System uses too much CPU resources. Try stopping recording first and then begin backup.

Data amount exceeds backup device capacity. It may result in burner error.

Backup device is not compatible.

Backup device is damaged.
18. Keyboard cannot control combo DVR.
Possible causes:

Combo DVR serial port setup is not correct

Address is not correct

When there are several switchers, power supply is not enough.

Transmission distance is too long.
19. Alarm signal cannot be disarmed.
Possible causes:

Alarm setup is not correct.

Alarm output has been opened manually.

Input device error or connection is not correct.
20. Alarm function is not working.
Possible causes:

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. Remote control does not work.
Possible causes:

Need to enter the correct Device ID on the remote control.

Distance is too far or control angle is too small.

Remote control battery power is low.

Remote control is damaged or combo DVR front panel is damaged.
22. Can not playback the downloaded file.
Possible causes:

There is no media player.

Need Divx Codec in file player
23. Forgot local menu operation password or network password

Contact Q-See tech support and we can generate a new password for the unit.
126 | P a g e
QC40198 User Manual