传真机的工作原理及常见故障排除 一、传真机的工作原理

传真机是一种利用扫描和光电转换技术，将文件、图片等纸质信息转化为电子信号并通过通信线路传输到目的地的设备。其工作原理主要分为四个步骤：

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1. 扫描：传真机通过其内置的扫描仪将需要传输的文件或图片进行扫描，将其转化为电子信号。 2. 调制解调：将扫描得到的电子信号进行调制解调，使其变成可以在通信线路上传输的信号。 3. 传输：将调制解调后的信号通过通信线路传输到目的地的传真机上。 4. 打印：接收方传真机接收到信号后，会通过内置的打印机将其还原为纸质文件或图片。 二、常见故障排除 1. 无法发送或接收传真：这可能是由于通信线路问题、传真机未正确连接或电源问题等引起的。首先检查通信线路是否畅通，确保传真机已正确连接并通电。如果问题仍然存在，可能需要检查传真机的内部硬件或联系专业人员进行维修。 2. 发送的传真内容模糊或失真：这可能是由于扫描质量不佳或传输过程中信号受到干扰所导致的。检查扫描仪的分辨率设置，确保其设置在合适的值上。同时，检查通信线路是否受到干扰，如有可能，尝试更换通信线路。 3. 无法正确识别对方传真机：这可能是由于对方传真机的电话号码输入错误或电话线路问题所导致的。检查电话号码是否输入正确，并确保电话线路畅通。如果问题仍然存在，可能需要检查传真机的电话拨号功能是否正常。 Fax Machine's Operating Principles and Common Troubleshooting I. Operating Principles of Fax Machines A fax machine is a device that utilizes scanning and photoelectric conversion technology to convert paper-based information such as documents and images into electronic signals, which are then transmitted to a destination through communication lines. Its operation mainly consists of four steps: 1. Scanning: The fax machine uses its built-in scanner to scan the document or image that needs to be transmitted, converting it into electronic signals. 2. Modulation and Demodulation: The electronic signals obtained from scanning are modulated and demodulated, turning them into signals that can be transmitted over communication lines. 3. Transmission: The modulated and demodulated signals are transmitted through the communication line to the destination fax machine. 4. Printing: After receiving the signal, the recipient's fax machine uses its built-in printer to convert it back into a paper document or image. II. Common Troubleshooting

1. Unable to send or receive faxes: This may be caused by communication line issues, incorrect connection of the fax machine, or power problems. First, check if the communication line is working properly, ensure that the fax machine is correctly connected and powered on. If the problem persists, it may require checking the internal hardware of the fax machine or contacting a professional for repair.

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2. Faded or distorted transmission content: This may be due to poor scanning quality or interference during transmission. Check the resolution settings of the scanner to ensure they are set to an appropriate value. At the same time, check if the communication line is interfered with, and if possible, try replacing the communication line. 3. Unable to correctly identify the recipient's fax machine: This may be caused by entering the wrong phone number of the recipient's fax machine or phone line issues. Check if the phone number is entered correctly and ensure that the phone line is working properly. If the problem persists, it may be necessary to check if the fax machine's dialing function is normal.