This kind of fault is very common, usually burn insurance or voltage regulator chip failure, some of the machine is the built-in switching power supply, output two sets of power, one set is 5V for signal processing, the other set is 12V to provide high voltage For backlighting on the board, if there is a fault in the circuit of the switching power supply, it may result in no output of both sets of power supplies.
Another possibility is that the 5V load is getting heavier, and the 5V voltage is pulled very low. In other words, the signal processing circuit in the rear stage has a problem, some of the circuits are damaged, causing the load to increase, and the 5V voltage is pulled. Very low, one by one after the investigation of the problem of the components of the latter stage, after replacing the faulty components, 5V can be restored, the fault is generally resolved, and often encountered after 5V voltage recovery is not a good boot.
There are many reasons for this situation. On the one hand, the MCU program may be flushed, which may result in no boot, and the MCU itself is damaged. For example, the I/O port of the MCU is damaged and the MCU cannot scan the keys. Faults caused by the MCU, find the hardware problem is useless, even if you change the MCU can not solve the problem, because the MCU is the need to program and write the Ma, in the case of no way to find the original AD driver board replacement, We can only find another way to find the A/D driver board that can be replaced. There are many places on the market that can be purchased. If the local market can't buy it, you can post it on the LCD home forum. Many LCD masters may be able to purchase the accessories you need and find the information you need.
When people come into hotel room or bathroom, the music will Music rang out. Background Music panel size is 86mm*86mm; the bottom box is standard 86 installed, the installation does not have special requirements, can cover the unsightly if the wall hole size is too large. Meet the bottom box installation and veneer open holes; it can be installed separately, also can install combine panel; Using aviation aluminum alloy, IPHONE technology CNC carving molding; A variety of colors can be customized. Input voltage: AC220V; one road IO input, you can start the preset music, used as shower music, also can be used for other input control;One road IO output , it can interact with the RCU, to achieve the preset scene control, such as wake up scene; Built-in MD card, with a simulation nature music , built in a number of classic light music for guests to choose;Built in Bluetooth module, you can communicate with the mobile phone easily , and play the phone's music. Display the current time on the standby screen. Can be used independently,also can be used with RCU to form a system.
Function:
1. This plastic ceiling speaker mount adopt ABS enclosure, alumnuim mesh cover long-term durability, never out of shape and fading.
2. High sensitivity, clear and sonorous sound.
3. The ceiling speaker mount is ideal choice for industrial and commercial application in hotel, school, factory, bathroom, meetting room, office building, home and other place where the background music and paging is needed.
4. Competitive factory price, big discount for big order.
Background Music System And Speaker
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Shenzhen Zhuohao Intelligent Electronic Development Co., Ltd. , https://www.szactop-smart.com