DVR operation manual
73
Possible reasons are as followed:
1 The data line of the hard disk is damaged.
2 The hard disk is damaged.
3 Update the different program with the origin program files.
4 The video files to look up are covered.
5 The recording is not on.
7. The local video is not clear.
Possible reasons are as followed:
1 The image quality is too bad.
2 The reading program is wrong. Reboot up the device.
3 The data line of the hard disk is damaged.
4 The hard disk is damaged.
5 The hardware of the device is damaged.
8. There is no audio signal in the surveillance window.
Possible reasons are as followed:
1 It is not an active tone arm.
2 It is not an active sound box.
3 The audio lines are damaged.
4 The hardware of the device is damaged.
9. There is audio signal in the surveillance window but mo audio signal in the playback
state.
Possible reasons are as followed:
1 Setting issues: the audio option is not chosen.
2 The according channel is not connected with the video.
10. The time is wrong.
Possible reasons are as followed:
1 Setting is wrong..
2 The battery is in bad connection or the voltage is too low.
3 The oscillation is damaged.
11. The device can not control the PTZ.
