The building intercom system is a management system that enables visitors, residents and property management centers to talk to each other, exchange information and control the safe access of the community in a multi-storey or high-rise building, commonly known as the doorbell system. How to repair when the following problems occur in the building intercom host?
Video intercom access control management
Four problems and maintenance methods that are easy to appear in the building intercom host:
First, do not unlock
1. Any unlocking method except the key can not be unlocked: first check whether the two ends of the unlocking line are connected, and then use the universal meter to test at the electric lock end. When unlocking, whether there is more than 300 mA of instantaneous current passing through the unlocking line (Yes, the main unit and the unlocking line are normal. It is estimated that the electric lock is damaged. Please replace the electric lock test. If not, then test the universal meter at the unlocking end of the main unit. If so, the unlocking line will be faulty and the main unit will not be explained)
1.1, the entire unit of the household can not unlock, but can be password or card unlock: estimated to be caused by short-circuit of the main line or damage to the platform of a certain floor, first check the wiring port of each main line, if the wiring is normal, then from the floor platform of the first floor Detect floor platform upwards (detect floor platform: first disconnect the upper trunk line, test the floor, if it is normal, if it is not normal, please replace the floor platform and try again until the test is normal (such as debugging in new installation), according to analogy );
Second, can't hear
When any terminal and host are working:
Any indoor unit call host can not hear: mainly the host failure, check whether the host speaker is connected, whether there is rust, if there are conditions, you can try another speaker.
Individual indoor unit call hosts can't hear: mainly indoor unit handset problems, check indoor unit microphones and lines.
The host talks indoor unit can't hear: first check the indoor unit horn to see if there is rust or poor contact, you can find a similar speaker for a test.
Third, can't say
When any terminal and the host are in working state, the host talking terminal can not hear: first check if the host microphone cable is connected, whether the microphone is damaged due to other reasons, if there is a chance, find a 52DB microphone replacement test (general extension) The microphone can be used with the host);
Fourth, no video
When any visual terminal and the host are in working state, the visual terminal cannot display the image of the host before: first check whether the wiring of the host camera to the host control board is intact, and then look at the camera control panel for water immersion. Like, the camera is likely to be damaged), at this time, conditional, take the monitor to test, connect the monitor to the video line end of the host, normal description of the trunk video line failure, abnormal description of the host failure, and finally the camera The video signal is directly connected to the monitor, which indicates that the host control board is faulty and the camera is faulty.
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