User’s Manual
352
HDD jumper is damaged.
HDD is broken.
Upgraded program is not compatible.
The recorded file has been overwritten.
Record function has been disabled.
7. Video is distorted when searching local records.
There are following possibilities:
Video quality setup is too low.
Program read error, bit data is too small. There is mosaic in the full screen. Restart the DVR to solve
this problem.
HDD data jumper error.
HDD malfunction.
DVR hardware malfunctions.
8. No audio under monitor state.
There are following possibilities:
It is not a power picker.
It is not a power acoustics.
Audio cable is damaged.
DVR hardware malfunctions.
9. There is audio under monitor state but no audio under playback state.
There are following possibilities:
Setup is not correct. Enable audio function.
Corresponding channel has no video input. Playback is not continuous when the screen is blue.
10. System time is not correct.
There are following possibilities:
Setup is not correct.
Battery contact is not correct or voltage is too low.
Crystal oscillator is broken.
11. Cannot control PTZ on DVR.
There are following possibilities:
Front panel PTZ error.
PTZ decoder setup, connection or installation is not correct.
Cable connection is not correct.
PTZ setup is not correct.
PTZ decoder and DVR protocol is not compatible.
PTZ decoder and DVR address is not compatible.
When there are several decoders, add 120 Ohm between the PTZ decoder A/B cables furthest end
to delete the reverberation or impedance matching. Otherwise the PTZ control is not stable.
The distance is too far.
12. Motion detection function does not work.
There are following possibilities:
Period setup is not correct.
Motion detection zone setup is not correct.
Sensitivity is too low.
Summary of Contents for DH-XVR42 AN-I Series
Page 1: ...AI Digital Video Recorder User s Manual V2 0 0 ZHEJIANG DAHUA VISION TECHNOLOGY CO LTD...
Page 185: ...User s Manual 175 Details Click Register ID Register ID Click to add a face picture...
Page 236: ...User s Manual 226 Details Click Register ID Register ID Click to add a face picture...
Page 312: ...User s Manual 302 Main stream Sub stream...
Page 315: ...User s Manual 305 Version 1 Version 2...
Page 360: ...User s Manual 350 Legal information...
Page 386: ...User s Manual 376 Appendix Figure 7 7 Check neutral cable connection...
Page 392: ...User s Manual...