联想常用显示器进入工厂模式方法（Lenovo commonly used display mode into factory mode）.docVIP

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联想常用显示器进入工厂模式方法（Lenovo commonly used display mode into factory mode）.doc

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联想常用显示器进入工厂模式方法（Lenovo commonly used display mode into factory mode）

联想常用显示器进入工厂模式方法（Lenovo commonly used display mode into factory mode） 1, AOC LCD, hold down the menu key, unplug the power cord, plug in the power cord. 2, AOC CRT, press and hold menu key, select screen size and position, select horizontal, vertical sync zoom, press and hold for 5 seconds to enter. 3, Proview LCD, press on the button, and then press the key; press and hold the keys, press the key. 4, Proview CRT, hold down the menu key, unplug the power line plug, power line Whose TV set is broken and the color of the picture is out of order. Please ask the TV maintenance man to repair it. But you may have heard, sometimes, maintenance personnel to the home, even the screwdriver does not take, but the remote control chaos by one, the television fault solved. Its strange, isnt it? As the TV bad can not disassemble can be repaired, the computer display is not we can not disassemble can solve some problems? We first analyze the working principle of the display: since the display adopts I2C bus control circuit, display color, brightness, contrast, degaussing, mode, special function adjustment and fault detection is in the display of internal microprocessor (MPU, which is similar to the desktop computer is under the control of CPU) the. When the display power is switched on, the first MPU display the internal power on reset, initialize, and then from the memory in the display (usually a serial memory chip, type 24C08, 24C16 or 93C46,93C56 and so on, capacity of several K bytes) read the display standard numerical value and the last state storage state. And at the same time to detect the current components of the working condition, and then press the corresponding numerical control unit reads the circuit, at the same time according to the line field signal polarity and different frequency corresponding to a selected display mode, displaying image and text. Of course, if the MPU of the monitor is damaged, the monitor is definitely not working. Since the white balance of NC