USER MANUAL
47
Chapter 7 Appendix
7.1 Troubleshooting
1. Q: What can I do if the system does not detect the HDD?
A: Check if the power supply system is properly connected and data cord and power cables
are securely connected, and if something wrong with the HDD interface. Or you may check if
your HDD is supported by referring to the specifications or descriptions.
2. Q: I have changed the password but forget the new password, how can I access the system?
A: If you forget system password, please consult with our technical personnel. We strongly
suggest user to set password easy to be remembered and relatively safe. If you have safety
requirement, please do not set very simply password, such as 000000.
3. Q: We see abnormal video signal or even no video signal by connecting the DVR and camera
together. Power supply for both devices is OK. What is wrong?
A: Check network cable at DVR side to see if the cable is firmly connected and if it is worn out
and needs to be replaced, or to check if NTSC or PAL is selected consistently.
4. Q: How to prevent DVR from being influenced by heat?
A: The DVR needs to dissipate heat while it is running. Please place the DVR in a place with
good air circulation and away from heat sources to ensure stability and life of the DVR.
5. Q: The remote controller of DVR
doesn’t work while the monitor screen is OK and panel keys
are functional. Why?
A: Operate again by aiming the remote controller at the IR receiver on front panel. If it still
doesn’t work, please check if the batteries in the remote controller are dying. If not, check if
the remote controller is broken.
6. Q: I want to take out HDD from my PC and install it in DVR. Can it work?
A: All HDDs supported by the system can be used. But remember, once DVR runs, the data
on your HDD will be lost.
7. Q: Can I playback while recording?
A: Yes. The system supports the function of playing while recording.
8. Q: Can I clear some records on HDD of DVR?
A: In consideration of the file security, you may not clear part of records. If you want to remove
all the records, you can format HDD.
9.
Q: Why can’t I log in DVR client?
A: Please check if the network connection settings are correct and RJ-45 port is with good
contact. And check if your account and password are correctly input.
10.
Q: Why can’t I find any records during playback?
A: Please check if the data line connection for HDD is OK and system time is properly
adjusted. Try a few times and restart. If it still doesn’t work, check if the HDD is broken.
11. Q: Why DVR cannot control PTZ?
A: Please check if:
1. PTZ in the front side is malfunctioned.
2. Setting, connection and installation of PTZ decoder are not correct.
3. PTZ setting of DVR is not correct.
4. Protocol of PTZ decoder does not match that of DVR.
5. Address of PTZ decoder does not match that of DVR.
6. If many decoders are connected, the farthest side of AB line of PTZ decoder should be
added 120Ω resistance to realize reflection suppression and impedance matching.
Otherwise, PTZ control will be unstable.
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