To solve the common problems of building intercom
The modern residential district of standard security product configuration, building intercom products is essential, each enterprise in the production of products to meet customer's requirements or to maverick champion or, function more and more rich, technical threshold is also getting higher and higher. Although the system is complex, but overall, with the gradual accumulation of industry experience, product design reliability is a rising trend. But in daily life, in terms of building intercom equipment, building intercom, there are a series of problems, mainly in the following aspects:
One, do not unlock
In addition to the key of any lock method can not unlock: first, please detection lock at both ends of the line is connected, then universal table test at the end of the lock, unlock, whether there are more than 300 Ma transient current through the lock line (that normal host and lock line, estimation as the lock is damaged, please replace the electric lock test; if not, then the universal table test at the end of the hosts in the lock, so, then unlock line fault, did not say host failure);
The entire unit can not unlock the tenants, but can be password or credit card lock: the main line is estimated to be short circuit or damage caused by the main line, the main line of the terminal, such as wiring, from the first floor of the platform to detect the first layer of the platform (detect the upper level of the main line, test if the normal, if not normal, please change the floor platform, until the test is normal (such as new installed), according to Richard Lei Tui);
Two, can not hear
Any terminal and the host in the working state:
Any indoor machine can not hear the host: the host is the main fault, check whether the host horn is good, there is no rust, there are conditions can change a horn.
Individual indoor machine talk host to hear: mainly indoor machine receiver, microphone and line inspection of indoor machine.
The host can not hear: first check the indoor speaker, see whether there is no rust or bad contact, you can find similar speakers for the test.
Three, can not say
Any terminal and the host in the working state, the host can not listen to the end of the speech: first see if the host is connected to the head, if the head is damaged, if there is a chance, find a 52DB's head replacement test (general motors can be general);
Four, no video
Any visual terminal and host in the working state, the host computer can not be displayed in front of the host image: first check the host control board is intact, and then detailed look at the camera control board whether there is water immersion is like, the camera is likely to be damaged, at this time, the monitor to test, the main video signal is received, the main video signal is not normal. This paper is provided by Shaanxi Electric Communication Technology Co., ltd.. For more information, please visit: http://www.uetx.cc/