ZMODO ZMD-DT-SCN4 - Manual (Page 72)

H.264 Super Digital Video Recorder User Manual
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3 The data exceeds the backup storage.
4 The backup equipment is not compatible.
5 The backup equipment is damaged.
17、 The keyboard can not control the DVR.
Possible reasons are as followed:
1 The serial port of the DVR is not set correctly.
2 The address is not correct.
3 When multiple transformers are connected, the power supply is not large enough. Please
give each transformer individual power supply.
4 The distance is too far.
18、 Alarm can not be recessional.
Possible reasons are as followed:
1 The setting of the alarm is not correct.
2 The alarm output is turned on manually.
3 The input machine is damaged or the connections are not correct.
4 There are some problems for specific program edition, Please update the program.
19、 Alarm is not working.
Possible reasons are as followed:
1 The setting of the alarm is not correct.
2 The connection of the alarm is not correct.
3 The alarm input signal is not correct.
4 An alarm is connected with two loops synchronously.
20、 The remote controller is not working,
Possible reasons are as followed:
1 The remote control address is not correct.
2 The remote control distance is too far or the angle is too large.
3 The battery is used up.
4 The remote controller or the front panel of the recording machine is damaged.
21、 The storage time is not enough.
Possible reasons are as followed:
1 Front camera quality is bad. The lens is too dirty. The camera is in backlighting installation.
2 The hard disk capacity is not enough.
3 The hard disk is damaged.
22、 The downloading files can not play.
Possible reasons are as followed: