ELRO FA420DVR 4-ch digital recorder + 500 gb hard disc USERS MANUAL User Manual
Page 69
Page 69
A: Possible cause:
1
Burner shares the same cable with hard drive
2
Excessive amount of date occupies too much CPU resource. Stop recording before backup
3
The amount of data exceeds the device capacity and results in burn error
4
Incompatible backup device
5
Backup device damaged
17
、
、
、
、
Q: Keyboard cannot control DVR
A: Possible cause:
1
DVR serial port settings are incorrect
2
Address incorrect.
3
Insufficient power to support multiple transformers. Need to provide separate power supply
to each transfer.
4
Transmission distance is too far
18
、
、
、
、
Q: Cannot disarm the alarm signal
A: Possible cause:
1
Alarm settings are incorrect
2
Alarm output turned on manually
3
Input device malfunction or incorrectly connected
4
Problem with certain versions of the program. Upgrade the program to solve problem.
19
、
、
、
、
Q: Alarm is not functioning
A: Possible cause:
1
Alarm settings are incorrect
2
Incorrect alarm cable wiring
3
Incorrect alarm input signal
4
The alarm device is connected to two loop circuits simultaneously
20
、
、
、
、
Q: Remote control is not functioning
A: Possible cause:
1
Remote control address incorrect
2
Remote control is out of operating range or angle
3
Battery in the remote control is out of power