The building intercom system is a management system that enables visitors, occupants and property management centers to communicate with each other, exchange information, and control access to safe neighborhoods in multi-storey or high-rise buildings. It is commonly known as the doorbell system. When the building intercom host appears the following four problems, how to repair it?
First, do not unlock:
1. Any unlock method other than the key cannot 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 the lock is unlocked, whether there is an instantaneous current exceeding 300 mA through the unlocking line (Yes, indicating that the host and the unlocking line are normal, it is estimated that the electric lock is damaged, please replace the electric lock test; if not, then the universal meter is tested at the host's unlocked end. If so, then the unlocking line is faulty and there is no description of the host fault);
1.1. The whole unit occupant cannot unlock, but it can be unlocked by password or swipe card: It is estimated that it is caused by a short circuit in the trunk line or damage to the platform in a certain floor. First check the connection ports of the main lines. If the wiring is normal, then start from the floor platform on the first floor. Upward detection of floor platform (detection floor platform: first disconnect the upper trunk line, test the layer, if normal, regardless, if not normal, please replace the floor platform and try again until the test is normal (such as new equipment debugging), according to analogy );
Second, can not hear:
When any terminal and host are in working condition:
Any indoor unit call host can not hear: the main failure of the host, check whether the host speaker is connected, there is no rust, there are conditions to change the speaker to try.
The individual indoor unit's call host could not hear it: mainly the indoor unit's handset problem, check the indoor unit's microphone and the line.
The host phone can not hear the indoor unit: first check the indoor unit speakers to see if there is any rust or contact, you can find a similar speaker for the next try.
Third, can not say:
When any terminal and the host are in working state, the host talking terminal will not hear: First, see if the host microphone line is connected properly, if the microphone head is damaged due to other reasons, if there is an opportunity, find a 52DB microphone head replacement test (general extension The microphone head 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 front image of the host: first check whether the wiring between the host camera and the host control panel is in good condition, and then look at whether the camera control board has water soaking (with water soaking For example, the camera may have been damaged. At this time, conditional, take the monitor to test, connect the monitor to the video line of the host, normally indicate the failure of the main line video, abnormally indicate the failure of the host, and finally the camera. The video signal is directly connected to the monitor, which normally indicates that the host control board is faulty, and it indicates that the camera is faulty.
First, do not unlock:
1. Any unlock method other than the key cannot 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 the lock is unlocked, whether there is an instantaneous current exceeding 300 mA through the unlocking line (Yes, indicating that the host and the unlocking line are normal, it is estimated that the electric lock is damaged, please replace the electric lock test; if not, then the universal meter is tested at the host's unlocked end. If so, then the unlocking line is faulty and there is no description of the host fault);
1.1. The whole unit occupant cannot unlock, but it can be unlocked by password or swipe card: It is estimated that it is caused by a short circuit in the trunk line or damage to the platform in a certain floor. First check the connection ports of the main lines. If the wiring is normal, then start from the floor platform on the first floor. Upward detection of floor platform (detection floor platform: first disconnect the upper trunk line, test the layer, if normal, regardless, if not normal, please replace the floor platform and try again until the test is normal (such as new equipment debugging), according to analogy );
Second, can not hear:
When any terminal and host are in working condition:
Any indoor unit call host can not hear: the main failure of the host, check whether the host speaker is connected, there is no rust, there are conditions to change the speaker to try.
The individual indoor unit's call host could not hear it: mainly the indoor unit's handset problem, check the indoor unit's microphone and the line.
The host phone can not hear the indoor unit: first check the indoor unit speakers to see if there is any rust or contact, you can find a similar speaker for the next try.
Third, can not say:
When any terminal and the host are in working state, the host talking terminal will not hear: First, see if the host microphone line is connected properly, if the microphone head is damaged due to other reasons, if there is an opportunity, find a 52DB microphone head replacement test (general extension The microphone head 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 front image of the host: first check whether the wiring between the host camera and the host control panel is in good condition, and then look at whether the camera control board has water soaking (with water soaking For example, the camera may have been damaged. At this time, conditional, take the monitor to test, connect the monitor to the video line of the host, normally indicate the failure of the main line video, abnormally indicate the failure of the host, and finally the camera. The video signal is directly connected to the monitor, which normally indicates that the host control board is faulty, and it indicates that the camera is faulty.
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