CSA464AE HIEE400106R0001 電路板模塊 CSA464AE 我們在維修電路板時，可以根據(jù)電路板電路塊的結(jié)構(gòu)組成將電路板劃分成一塊塊單元電路然后判斷是那一個電路塊出現(xiàn)的故喧，在去查找鎖定的電路塊中是哪一個電子元件損壞，然后采用同型號同規(guī)格的電子元件進行更換，將發(fā)生故喧的電路板維修好。
那么我們電路板中電路具體分為哪些電路塊，怎樣判斷各電路塊是否存在故障、我們又該怎樣查呢?CSA464AE HIEE400106R0001 電路板模塊 CSA464AE 在電路板中，不管是什么類型的電路板基本上都是由: 電源給應(yīng)電路、輸入接口電路、微理器控制電路、輸出接口電路、顯示電路、保護電路和通信電路等7大部分電路組成，只要咱們掌握了這七大類的電路組成結(jié)構(gòu)和控制原理，知道每類電路的結(jié)構(gòu)織成特點和關(guān)鍵部件，影在電路板中判 漸出每部分由路是星于那一類由路。孰采每一類由路的為信現(xiàn)律和特點，新可以針對各種舉型的電路板進行維修了

CSA464AE

CSA464AE HIEE400106R0001 電路板模塊 CSA464AE 電源供應(yīng)電路: 電源供應(yīng)電路部分電路是向整個電路板中各單元電路提供能量的一部分電路，它工作在高電壓、大電流的環(huán)境下，是最容易出故障的一部分電路電源供應(yīng)電路的功用是:將220VAC或380VA(交流電轉(zhuǎn)換成電路板所的各種不同等級、輸出電樂定的5V、12.15V、18V、24等級的直流電。
CSA464AE HIEE400106R0001 電路板模塊 CSA464AE 輸入接口電路: 輸入接口電路是電路板和外界進行信息交換和溝通的一部分電路，它可以將人們想要對電路板所說的話或要辦的事轉(zhuǎn)化成電路板中微處理器能夠識別的電信號。例如:我們在監(jiān)控溫度高低時，你如果用咱們平常人與人交流的語言說給微處理器聽，溫度高了，請把它調(diào)低一些，微處理是聽不懂咱們說的話的，這時，我們可以通過接口電路先用熱敏電阻或熱電偶元件將溫度信號轉(zhuǎn)成電信號，然后在對所轉(zhuǎn)換出電信號進行處理，就可以得到微處理器可以識別的電信號了。這樣的話微處理器明白了我們要它處理的事項后他就可以按照我們的意圖去做了。其它的像光照度、壓力、風(fēng)力、液位、位置、等信號都是同樣道理。
處理單元CSA464AE HIEE400106R0001 包括:源處理器,經(jīng)由第一通信線路與系統(tǒng)通信總線耦接;備份處理器,經(jīng)由第二通信線路與系統(tǒng)通信總線耦接;CSA464AE HIEE400106R0001 以及微處理器間通信通道,用于在源處理器與備份處理器之間的通信.備份處理器CSA464AE HIEE400106R0001 通過監(jiān)控第一通信電路以監(jiān)控源處理器發(fā)送的通信消息來監(jiān)控源處理器的故障.備份處理器響應(yīng)于在預(yù)定持續(xù)時間在第一通信線路上不存在通信消息來確定源處理器的故障.備份處理器響應(yīng)于該故障接管對處理單元通信的控制.采用本公開的方案,能夠提供對通信故障的穩(wěn)健有效的一致檢測.

CSA464AE

CSA464AE HIEE400106R0001 Circuit board module CSA464AE When we repair the circuit board, we can divide the circuit board into a block of unit circuits according to the structure of the circuit board block, and then determine which circuit block appears, and which electronic component is damaged in the locked circuit block. Then use the same type of electronic components with the same specifications to replace, the circuit board will be repaired.
So what circuit blocks are the circuits in our circuit board divided into, how to judge whether there is a fault in each circuit block, and how should we check it? CSA464AE HIEE400106R0001 Circuit board module CSA464AE In the circuit board, no matter what type of circuit board is basically made of: Power supply circuit, input interface circuit, microcontroller control circuit, output interface circuit, display circuit, protection circuit and communication circuit, etc. 7 most of the circuit composition, as long as we master the seven categories of circuit structure and control principle, know the structure of each type of circuit weaving characteristics and key components, the image in the circuit board is judged by each part of the road is star in that type of road. Based on the law and characteristics of each type of road, the new can be repaired for various types of circuit boards
CSA464AE HIEE400106R0001 Board Module CSA464AE Power supply circuit: The power supply circuit is a part of the circuit that provides energy to each unit circuit in the entire circuit board. It works in a high voltage and high current environment. The function of the power supply circuit is to convert 220VAC or 380VA(alternating current) into various levels of the circuit board, and output 5V, 12.15V, 18V, and 24 levels of direct current of the electric music.
CSA464AE HIEE400106R0001 Circuit board module CSA464AE Input interface circuit: The input interface circuit is a part of the circuit board and the outside world for information exchange and communication, which can convert what people want to say or do to the circuit board into an electrical signal that the microprocessor in the circuit board can recognize. For example: when we are monitoring the temperature, if you use our ordinary human communication language to say to the microprocessor, the temperature is high, please turn it down a little, the microprocessor is not able to understand what we say, at this time, we can first use the interface circuit to convert the temperature signal into an electrical signal, and then process the converted electrical signal. You get an electrical signal that the microprocessor can recognize. That way the microprocessor knows what we want it to do and it can do what we want it to do. The same is true of other signals such as illumination, pressure, wind, liquid level, position, and so on.
The processing unit CSA464AE HIEE400106R0001 comprises: source processor, coupled with the system communication bus through the first communication line; The backup processor is coupled with the system communication bus through the second communication line; CSA464AE HIEE400106R0001 and inter-microprocessor communication channel for communication between the source processor and backup processor. Backup processor CSA464AE HIEE400106R0001 Monitors source processor faults by monitoring the first communication circuit to monitor the communication messages sent by the source processor. The backup processor responds to the failure of the source processor by not having a communication message on the first communication line for a predetermined duration. The backup processor takes over control of the processing unit communication in response to this failure. The scheme can provide robust and effective consistent detection of communication faults.

CSA464AE