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4
The settings of color, brightness etc of digital video recorder are incorrect
7.
Ask: no sound in listening
Answer: possible reasons:
1
Check if active pickup and active sound box are adopted, you can judge by directly short
the signal cables of both
2
Whether the video channel with audio source connected is activated, you can single click
the channel to be in full screen to judge
3
Hardware failure of digital video recorder
8.
Ask: there is sound in monitoring, but no sound in playback
Answer: possible reasons:
1
Setting problem: audio record option has not been opened
2
Whether mute is set in playback interface
9.
Ask: time display is wrong
Answer: possible reasons:
Setting is wrong, or the time is modified but "Modify date & time" is not pressed to validate
1
2
The contact of battery is bad
3
The service time of battery is too long, please replace the battery
Ask: why "Stop record" by clicking right mouse has no function, how to stop record
10.
Answer:
The "Stop record" key of right mouse is used to stop manual record, it can't be used to stop
1
the record set in starting record or record schedule
2
If it is required to stop record, please enter into record schedule, set the time interval as no
record
11.
Ask: motion detection has no function
Answer: possible reasons:
1
The setting of motion detection zone is not appropriate
2
The sensitivity is too low
12.
Ask: error in DVD/CD rewritable drive/USB device
Answer: possible reasons:
1
Data quantity exceeds the capacity of backup device, which will result in CD burning error
2
Backup device is not compatible
3
Backup device is damaged
13.
Ask: the remote control can't control
Answer: possible reasons:
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