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LASERJET PRO MFP
Repair Manual
M521

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   Summary of Contents for HP LASER PRO M521

  • Page 1

    LASERJET PRO MFP Repair Manual M521...

  • Page 3

    HP LaserJet Pro MFP M521 Printer Repair Manual...

  • Page 4

    Nothing herein should be construed as constituting an additional warranty. HP shall not be liable for technical or editorial errors or omissions contained herein. Edition 1, 12/2012...

  • Page 5: Conventions Used In This Guide

    Conventions used in this guide TIP: Tips provide helpful hints or shortcuts. NOTE: Notes provide important information to explain a concept or to complete a task. CAUTION: Cautions indicate procedures that you should follow to avoid losing data or damaging the product.

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    Conventions used in this guide ENWW...

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    Table of contents 1 Removal and replacement ....................1 Removal and replacement strategy ..................... 2 General cautions during removal and replacement ............2 Electrostatic discharge ....................2 Required tools ......................3 Types of screws ......................3 Service approach ........................5 Before performing service ..................

  • Page 8

    Right-rear cover ..................30 Tray 1 cover .................... 32 Cartridge-door assembly ................34 Right cover assembly ................36 Lower right cover ..................41 Reinstall the lower right cover ............. 43 I/O plate ....................44 Document feeder assemblies and scanner ..............46 Document feeder/scanner assembly ............

  • Page 9

    Environmental sensor ................128 High-voltage power supply (HVPS) ............130 2 Parts and diagrams ...................... 139 Order parts by authorized service providers ................140 Order parts, accessories, and supplies ..............140 Supplies part numbers ................... 140 Customer self-repair (CSR) and service kits ............... 141 Related documentation and software ..................

  • Page 10

    viii ENWW...

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