HP M401系列打印机故障排除手册：常见问题与解决方法

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本篇文档是惠普(LASERJETPRO400) M401系列打印机的故障排除手册，适用于M401d和M401DN型号。手册由Hewlett-Packard Development Company, L.P.在2012年发布，版权受法律保护，未经书面许可禁止复制、改编或翻译，除非符合版权法的规定。手册的核心内容围绕打印机的常见问题诊断和解决方法展开，旨在帮助用户在遇到硬件或软件问题时进行自我修复。版权和许可证部分明确指出，只有随产品和服务提供的明确保修声明涵盖了产品的性能和维修，手册本身并不构成额外的保修，因此用户需自行承担技术错误或遗漏可能带来的风险。该版本为第二版，发布日期为2012年10月，强调了几个重要的符号和术语： 1. TIP：提供实用的提示或快捷方式，帮助用户快速解决问题。 2. NOTE：标注重要的信息，用来解释概念或指导完成任务，对理解操作流程至关重要。 3. CAUTION：警告性信息，指示用户必须遵循的步骤，以防数据丢失或设备损坏。手册的最后部分列出了部分号CF270-91001，表明这是特定版本的内容。在知识产权方面，提及了Microsoft、Windows、Windows XP和Windows Vista等均为美国注册商标。总体来说，这份故障排除手册是HP M401系列打印机用户的宝贵资源，提供了系统化的故障排查指南，旨在提高设备的稳定性和用户的服务自给能力，但同时也明确了责任边界，确保用户在操作过程中保持谨慎和知情。

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List of figures

Figure 1-1 Product systems ..................................................................................................................... 2

Figure 1-2 Product components ............................................................................................................... 3

Figure 1-3 Optional Tray 3 components .................................................................................................. 4

Figure 1-4 Engine control system components ........................................................................................... 6

Figure 1-5 DC controller ........................................................................................................................ 7

Figure 1-6 Main motor .......................................................................................................................... 9

Figure 1-7 Fan control ......................................................................................................................... 10

Figure 1-8 High-voltage power supply ................................................................................................... 11

Figure 1-9 Fuser control circuit .............................................................................................................. 12

Figure 1-10 Fuser temperature control ................................................................................................... 13

Figure 1-11 Low-voltage power supply .................................................................................................. 16

Figure 1-12 Laser scanner system .......................................................................................................... 18

Figure 1-13 Image-formation system ...................................................................................................... 20

Figure 1-14 Image-formation process .................................................................................................... 21

Figure 1-15 Primary charging process ................................................................................................... 22

Figure 1-16 Laser-beam exposure ......................................................................................................... 22

Figure 1-17 Development process ......................................................................................................... 23

Figure 1-18 Transfer process ................................................................................................................ 24

Figure 1-19 Separation from the drum ................................................................................................... 24

Figure 1-20 Fusing .............................................................................................................................. 25

Figure 1-21 Drum cleaning .................................................................................................................. 26

Figure 1-22 Pickup and feed system paper path ..................................................................................... 27

Figure 1-23 Pickup and feed system electrical components ....................................................................... 28

Figure 1-24 Jam detection sensors ........................................................................................................ 29

Figure 1-25 Paper-feeder paper path .................................................................................................... 31

Figure 1-26 Paper feeder signal flow .................................................................................................... 32

Figure 1-27 Paper feeder electrical components ..................................................................................... 33

Figure 1-28 Jam detection sensors ........................................................................................................ 34

Fig

re 2-1 Major components (1 of 2) ................................................................................................... 48

Figure 2-2 Major components (2 of 2) ................................................................................................... 49

Figure 2-3 Timing diagram ................................................................................................................... 50

Figure 2-4 Circuit diagram — LCD control panel models ......................................................................... 51

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