www.163.com
@163.com smtp.163.com pop3.163.com
@vip.163.com smtp.vip.163.com pop.vip.163.com
@188.com smtp.188.com pop.188.com
@126.com smtp.126.com pop3.126.com
@netease.com smtp.netease.com pop.netease.com
@yeah.net smtp.yeah.net pop.netease.com
www.qq.com @qq.com smtp.qq.com pop.qq.com
163.net smtp.163vip.net popx.163vip.net
www.sina.com @sina.com.cn smtp.sina.com.cn pop3.sina.com.cn
www.yahoo.com
smtp.163vip.net pop.163vip.net
Mail.tom.com @tom.com smtp.tom.com pop.tom.com
Mail.263.com @263.net smtp.263.net pop3.263.net
x263.net smtp.x263.net pop.x263.net
263.net.cn smtp.263.net.cn pop.263.net.cn
139 mail box @139.com smtp.139.com pop.139.com
21cn.com smtp.21cn.com pop.21cn.com
Vip.21cn.com vip.21cn.com vip.21cn.com
etang.com smtp.etang.com pop.etang.com
elong.com smtp.elong.com pop3.elong.com
List 8-2
7.4 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.
2. Q: We have changed the password but do not remember the new password, how can we access the
system?
A: If you forget system password, please consult with the service personnel.
3. Q: We are not getting any video signal on the DVR, what is wrong?
A: Check camera video cable and connections; or check monitor video cable and connections; or confirm
that the camera has the power and / or check camera lens setting.
4. Q: Why some channels display just a blank screen even if they receive video sources?
A: Check if the camera is connected to the system properly displays the image; check if the camera is
properly supplied with power.
5. Q: Can the DVR have problems if it gets too hot, how can I prevent this?
A: The DVR has a fan to help it dissipate heat while it is running. Please place the DVR in a place where
there is good air circulation and away from heat sources to increase stability and life of the DVR.
6. Q: “Record” Can not work normally, how to deal with?
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