LG LRH7080D Series Owner's Manual page 54

54 Troubleshooting
Symptoms
Audio data recorded with
video data is not playing.
The colors of some camera
videos are strange or videos
are displayed abnormally.
There is a lot of (screen) noise
5
accompanying the image.
The connected sensor is not
operating.
The connected PTZ camera is
not operating.
Check the audio recording option is correctly set for the camera you wish to record audio.
Check the speaker and audio (line input) on the rear of system are connected correctly.
Check the connected speaker is working properly.
If the camera connected to the system has a problem, make sure whether the camera is damaged by
trying to connect another camera to the video input jack.
Check the video format setting of the unit is the same as the connected camera's video format.
Depending on your region, the camera's video format can support either PAL or NTSC. Depending on the
camera's video format, the video process can differ greatly, therefore it can be difficult to recognize the
video data if the video format setting is different from the camera's video format.
Check if the video signal output from the camera has a problem. Ensure the camera is not damaged by
trying another camera with a working video output.
Check if the video cable connection between the camera and the DVR is cut, crosswired or shorted.
Check if there is a high voltage wire around the video cable connection between camera and DVR
system. It can cause interference and affect video quality.
Check the video cable connection between the camera and the DVR system is the correct video cable.
When a normal power-supplying cable is used instead of the video cable, screen noise can be generated.
When the video is connected to various system and the video is being output from video distributor, the
noise can be generated beause the video signal may be weak. In this case, connect the video signal of
that camera to DVR directly to confirm and solve this problem.
If the distance between the camera and DVR is long, the noise may be generated on some camera
channel. In this case, connect that video signal to the other video input connector of DVR to confirm this
problem. If the noise is generated equally, please check the camera's ground connection and cable.
Check the type of sensor in the camera setting is the same as with the connected sensor.
Check the system is set to use the sensor in the recording schedule window in the recording setting
menu.
Check the sensor is properly connected to the ALARM-IN.
Check the system is set to use the PTZ camera in the camera setting menu.
Check the power cable of the PTZ camera is properly connected.
Check the signal cable of the PTZ camera is properly connected.
Check the selected channel to control the PTZ camera.
Check the user type. The PTZ camera control is not available for a normal user.
Cause & Solution