HP LaserJet Pro MFP M125, M126, M127, M128.打印机维修手册.pdf

发布时间：2022-06-06 发布人：admin 分类：说明书资料大小：9.77M 资料格式：pdf 举报版权申诉

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Removal and replacement

Removal and replacement strategy

Introduction

Required tools

Types of screws

Service approach

Before performing service

After performing service

Parts removal order

Removal and replacement procedures

Customer-replaceable parts

Toner cartridge

Input tray

Short-media extender

Pickup roller

Separation pad

Handset (M128fp model only)

Covers and external components

Paper-delivery tray (output bin extension)

Left cover

Remove the left cover

Scanner assembly

Remove the scanner assembly

Cartridge door

Remove the cartridge door

Front cover and control-panel assembly

Remove the front cover

Remove the control-panel assembly

Right cover

Remove the right cover

Top cover and image scanner lock

Remove the top cover and image scanner lock

Rear cover

Remove the rear cover

Reinstall the rear cover

Main assemblies

Transfer roller

Left-side PCAs

Wireless PCA (wireless models only)

Remove the wireless PCA

Formatter PCA

Remove the formatter PCA for base models (M125a, M125r, M125ra)

Remove the formatter PCA for base + wireless models (M125nw, M126nw, M125rnw)

Remove the formatter PCA for fax models (M127fn, M128fn, M128fp)

Remove the formatter PCA for fax + wireless models (M127fw, M128fw)

Fax PCA (fax models only)

Remove the fax PCA

Laser scanner assembly and cable

Remove the laser scanner assembly and cable

Motor PCA and motor

Remove the motor PCA and motor

Engine controller PCA

Remove the engine controller PCA

Reinstall the engine controller PCA

Fuser and delivery sensor PCA

Remove the fuser and delivery sensor PCA

Reinstall the fuser

Pickup assembly and pickup sensor PCA

Remove the pickup assembly and pickup sensor PCA

Reinstall tips for the grounding spring and lifting plate

Scanner and document feeder components

Separate the scanner lid or document feeder from the scan base

Scanner components

Scan bezel

Scan drive system

Remove the scan drive system

Scan FFC cable

Remove the scan FFC cable

Scan motor

Remove the scan motor

Scanner spring assembly

Remove the scanner spring assembly

Document feeder components

Document feeder (ADF) top cover

ADF core

Remove the ADF core

ADF separation pad

Remove the ADF separation pad

Reinstall the ADF separation pad assembly

ADF inner tray

Remove the ADF inner tray

ADF input guides and gear

Remove the ADF input guides and gear

ADF pre-pickup arm assembly

Remove the ADF pre-pickup arm assembly

Parts and diagrams

Order parts by authorized service providers

Order replacement parts

Related documentation

Supplies part numbers

Customer replaceable units (CRU) kit part numbers

Whole-unit replacement part numbers

How to use the parts lists and diagrams

Covers and external components

Internal assemblies

Internal assemblies (1 of 3)

Internal assemblies (2 of 3)

Internal assemblies (3 of 3)

Scanner and document feeder components

Scanner lid, base models

Scanner assembly, base models

Scan drive system, all models

Scanner and document feeder assembly, fax models

Scanner assembly, fax models

Document feeder assembly, fax models

Document feeder top cover, fax models

Document feeder core, fax models

Alphabetical parts list

Numerical parts list

Index

LASERJET PRO MFP Repair Manual M125-126 M127-128 M127-128

HP LaserJet Pro MFP M125, M126, M127, M128 Repair Manual

Copyright and License Trademark Credits Microsoft®, Windows®, Windows® XP, and Windows Vista® are U.S. registered trademarks of Microsoft Corporation. © 2013 Copyright Hewlett-Packard Development Company, L.P. Reproduction, adaptation, or translation without prior written permission is prohibited, except as allowed under the copyright laws. The information contained herein is subject to change without notice. The only warranties for HP products and services are set forth in the express warranty statements accompanying such products and services. Nothing herein should be construed as constituting an additional warranty. HP shall not be liable for technical or editorial errors or omissions contained herein. Part number: CZ183-90905 Edition 1, 9/2013

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. WARNING! Warnings alert you to specific procedures that you should follow to avoid personal injury, catastrophic loss of data, or extensive damage to the product. ENWW iii

Table of contents 1 Removal and replacement .............................................................................................................................. 1 Removal and replacement strategy ...................................................................................................................... 2 Introduction ......................................................................................................................................... 2 Required tools ..................................................................................................................................... 2 Types of screws ................................................................................................................................... 3 Service approach ................................................................................................................................................... 4 Before performing service .................................................................................................................. 4 After performing service ..................................................................................................................... 4 Parts removal order ............................................................................................................................ 4 Removal and replacement procedures ................................................................................................................. 5 Customer-replaceable parts ............................................................................................................... 5 Toner cartridge ................................................................................................................. 5 Input tray ........................................................................................................................... 6 Short-media extender ...................................................................................................... 7 Pickup roller ...................................................................................................................... 7 Separation pad ................................................................................................................ 10 Handset (M128fp model only) ........................................................................................ 11 Covers and external components ..................................................................................................... 12 Paper-delivery tray (output bin extension) ................................................................... 12 Left cover ........................................................................................................................ 13 Remove the left cover .................................................................................. 13 Scanner assembly ........................................................................................................... 14 Remove the scanner assembly .................................................................... 14 Cartridge door ................................................................................................................. 17 Remove the cartridge door .......................................................................... 17 Front cover and control-panel assembly ....................................................................... 19 Remove the front cover ............................................................................... 19 Remove the control-panel assembly ........................................................... 22 Right cover ...................................................................................................................... 24 Remove the right cover ................................................................................ 24 Top cover and image scanner lock ................................................................................. 27 Remove the top cover and image scanner lock ........................................... 27 ENWW v

Rear cover ....................................................................................................................... 29 Remove the rear cover ................................................................................. 29 Reinstall the rear cover ................................................................................ 30 Main assemblies ................................................................................................................................ 31 Transfer roller ................................................................................................................. 31 Left-side PCAs ................................................................................................................. 33 Wireless PCA (wireless models only) ........................................................... 35 Formatter PCA .............................................................................................. 37 Fax PCA (fax models only) ............................................................................ 42 Laser scanner assembly and cable ................................................................................. 43 Remove the laser scanner assembly and cable ........................................... 43 Motor PCA and motor ...................................................................................................... 45 Remove the motor PCA and motor .............................................................. 45 Engine controller PCA ..................................................................................................... 51 Remove the engine controller PCA .............................................................. 51 Reinstall the engine controller PCA ............................................................. 57 Fuser and delivery sensor PCA ....................................................................................... 60 Remove the fuser and delivery sensor PCA ................................................. 60 Reinstall the fuser ........................................................................................ 62 Pickup assembly and pickup sensor PCA ....................................................................... 64 Remove the pickup assembly and pickup sensor PCA ................................ 64 Reinstall tips for the grounding spring and lifting plate ............................. 66 Scanner and document feeder components .................................................................................... 69 Separate the scanner lid or document feeder from the scan base ............................... 69 Scanner components ...................................................................................................... 71 Scan bezel ..................................................................................................... 71 Scan drive system ........................................................................................ 73 Scan FFC cable .............................................................................................. 74 Scan motor ................................................................................................... 76 Scanner spring assembly ............................................................................. 78 Document feeder components ....................................................................................... 80 Document feeder (ADF) top cover ................................................................ 80 ADF core ........................................................................................................ 81 ADF separation pad ...................................................................................... 82 ADF inner tray ............................................................................................... 86 ADF input guides and gear ........................................................................... 86 ADF pre-pickup arm assembly ..................................................................... 89 2 Parts and diagrams ...................................................................................................................................... 91 Order parts by authorized service providers ...................................................................................................... 92 Order replacement parts ................................................................................................................... 92 vi ENWW

Related documentation .................................................................................................................... 92 Supplies part numbers ...................................................................................................................... 92 Customer replaceable units (CRU) kit part numbers ........................................................................ 93 Whole-unit replacement part numbers ............................................................................................ 94 How to use the parts lists and diagrams ............................................................................................................. 95 Covers and external components ....................................................................................................................... 96 Internal assemblies ............................................................................................................................................. 98 Internal assemblies (1 of 3) .............................................................................................................. 98 Internal assemblies (2 of 3) ............................................................................................................ 100 Internal assemblies (3 of 3) ............................................................................................................ 102 Scanner and document feeder components ..................................................................................................... 104 Scanner lid, base models ................................................................................................................ 104 Scanner assembly, base models .................................................................................................... 106 Scan drive system, all models ........................................................................................................ 108 Scanner and document feeder assembly, fax models ................................................................... 110 Scanner assembly, fax models ....................................................................................................... 112 Document feeder assembly, fax models ........................................................................................ 114 Document feeder top cover, fax models ........................................................................................ 116 Document feeder core, fax models ................................................................................................ 118 Alphabetical parts list ....................................................................................................................................... 120 Numerical parts list ........................................................................................................................................... 124 Index ........................................................................................................................................................... 129 ENWW vii

List of tables Table 1-1 Types of screws .................................................................................................................................................... 3 Table 2-1 Order parts, accessories, and supplies .............................................................................................................. 92 Table 2-2 Related documentation ..................................................................................................................................... 92 Table 2-3 Supplies part numbers ....................................................................................................................................... 92 Table 2-4 Customer replaceable units (CRU) kit part numbers ......................................................................................... 93 Table 2-5 Whole-unit replacement part numbers ............................................................................................................. 94 Table 2-6 Covers and external components ...................................................................................................................... 97 Table 2-7 Internal assemblies (1 of 3) ............................................................................................................................... 99 Internal assemblies (2 of 3) ............................................................................................................................. 101 Table 2-8 Table 2-9 Internal assemblies (3 of 3) ............................................................................................................................. 103 Table 2-10 Scanner lid, base models ............................................................................................................................... 105 Table 2-11 Scanner assembly, base models ................................................................................................................... 107 Table 2-12 Scan drive system, all models ....................................................................................................................... 109 Table 2-13 Scanner and document feeder assembly, fax models .................................................................................. 111 Table 2-14 Scanner assembly, fax models ...................................................................................................................... 113 Table 2-15 Document feeder assembly, fax models ...................................................................................................... 115 Table 2-16 Document feeder top cover, fax models ....................................................................................................... 117 Table 2-17 Document feeder core, fax models ............................................................................................................... 119 Table 2-18 Alphabetical parts list .................................................................................................................................... 120 Table 2-19 Numerical parts list ........................................................................................................................................ 124 ENWW ix

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HP LaserJet Pro MFP M125, M126, M127, M128.打印机维修手册.pdf

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