HP LaserJet Pro MFP M125, LaserJet Pro MFP M126, LaserJet Pro MFP M127, LaserJet Pro MFP M128 Repair Manual
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
© 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
Microsoft®, Windows®, Windows® XP, and
Windows Vista® are U.S. registered trademarks
of Microsoft Corporation.
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
Table 2-8 Internal assemblies (2 of 3) ............................................................................................................................. 101
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
List of figures
Figure 1-1 Screwdrivers ........................................................................................................................................................ 2
Figure 1-2 Remove the toner cartridge (1 of 3) ................................................................................................................... 5
Figure 1-3 Remove the toner cartridge (2 of 3) ................................................................................................................... 5
Figure 1-4 Remove the toner cartridge (3 of 3) ................................................................................................................... 6
Figure 1-5 Remove the input tray ........................................................................................................................................ 6
Figure 1-6 Remove the short-media extender .................................................................................................................... 7
Figure 1-7 Remove the pickup roller (1 of 5) ....................................................................................................................... 7
Figure 1-8 Remove the pickup roller (2 of 5) ....................................................................................................................... 8
Figure 1-9 Remove the pickup roller (3 of 5) ....................................................................................................................... 8
Figure 1-10 Remove the pickup roller (4 of 5) ..................................................................................................................... 9
Figure 1-11 Remove the pickup roller (5 of 5) ..................................................................................................................... 9
Figure 1-12 Remove the separation pad (1 of 2) ............................................................................................................... 10
Figure 1-13 Remove the separation pad (2 of 2) ............................................................................................................... 10
Figure 1-14 Remove the handset (1 of 2) .......................................................................................................................... 11
Figure 1-15 Remove the handset (2 of 2) .......................................................................................................................... 11
Figure 1-16 Remove the paper-delivery tray .................................................................................................................... 12
Figure 1-17 Remove the left cover (1 of 2) ........................................................................................................................ 13
Figure 1-18 Remove the left cover (2 of 2) ........................................................................................................................ 13
Figure 1-19 Remove the scanner assembly (1 of 4) .......................................................................................................... 14
Figure 1-20 Remove the scanner assembly (2 of 4) .......................................................................................................... 15
Figure 1-21 Remove the scanner assembly (3 of 4) .......................................................................................................... 15
Figure 1-22 Remove the scanner assembly (4 of 4) .......................................................................................................... 16
Figure 1-23 Remove the cartridge door (1 of 3) ................................................................................................................ 17
Figure 1-24 Remove the cartridge door (2 of 3) ................................................................................................................ 17
Figure 1-25 Remove the cartridge door (3 of 3) ................................................................................................................ 18
Figure 1-26 Remove the front cover (1 of 5) ..................................................................................................................... 19
Figure 1-27 Remove the front cover (2 of 5) ..................................................................................................................... 20
Figure 1-28 Remove the front cover (3 of 5) ..................................................................................................................... 20
Figure 1-29 Remove the front cover (4 of 5) ..................................................................................................................... 21
Figure 1-30 Remove the front cover (5 of 5) ..................................................................................................................... 21
Figure 1-31 Remove the control-panel assembly (1 of 4) ................................................................................................ 22
Figure 1-32 Remove the control-panel assembly (2 of 4) ................................................................................................ 22
ENWW xi
Figure 1-33 Remove the control-panel assembly (3 of 4) ................................................................................................ 23
Figure 1-34 Remove the control-panel assembly (4 of 4) ................................................................................................ 23
Figure 1-35 Remove the right cover (1 of 5) ...................................................................................................................... 24
Figure 1-36 Remove the right cover (2 of 5) ...................................................................................................................... 25
Figure 1-37 Remove the right cover (3 of 5) ...................................................................................................................... 25
Figure 1-38 Remove the right cover (4 of 5) ...................................................................................................................... 26
Figure 1-39 Remove the right cover (5 of 5) ...................................................................................................................... 26
Figure 1-40 Remove the top cover ..................................................................................................................................... 27
Figure 1-41 Remove the image scanner lock ..................................................................................................................... 28
Figure 1-42 Reinstall the top cover .................................................................................................................................... 28
Figure 1-43 Remove the rear cover ................................................................................................................................... 29
Figure 1-44 Reinstall the rear cover .................................................................................................................................. 30
Figure 1-45 Remove the transfer roller (1 of 4) ................................................................................................................ 31
Figure 1-46 Remove the transfer roller (2 of 4) ................................................................................................................ 31
Figure 1-47 Remove the transfer roller (3 of 4) ................................................................................................................ 32
Figure 1-48 Remove the transfer roller (4 of 4) ................................................................................................................ 32
Figure 1-49 PCA layout for the base models (M125a, M125r, M125ra) ............................................................................ 33
Figure 1-50 PCA layout for the base + wireless models (M125nw, M126nw, M125rnw) ................................................. 33
Figure 1-51 PCA layout for the fax models (M127fn, M128fn, M128fp) ........................................................................... 34
Figure 1-52 PCA layout for the fax + wireless models (M127fw, M128fw) ....................................................................... 34
Figure 1-53 Remove the wireless PCA (1 of 3) ................................................................................................................... 19
Figure 1-54 Remove the wireless PCA (2 of 3) ................................................................................................................... 35
Figure 1-55 Remove the wireless PCA (3 of 3) ................................................................................................................... 36
Figure 1-56 Reinstall the wireless PCA .............................................................................................................................. 36
Figure 1-57 Remove the formatter PCA for base models (1 of 2) ..................................................................................... 37
Figure 1-58 Remove the formatter PCA for base models (2 of 2) ..................................................................................... 37
Figure 1-59 Remove the formatter PCA for base + wireless models (1 of 2) ................................................................... 38
Figure 1-60 Remove the formatter PCA for base + wireless models (2 of 2) ................................................................... 38
Figure 1-61 Remove the formatter PCA for fax models (1 of 2) ....................................................................................... 39
Figure 1-62 Remove the formatter PCA for fax models (2 of 2) ....................................................................................... 39
Figure 1-63 Remove the formatter PCA for fax + wireless models (1 of 4) ...................................................................... 40
Figure 1-64 Remove the formatter PCA for fax + wireless models (2 of 4) ...................................................................... 40
Figure 1-65 Remove the formatter PCA for fax + wireless models (3 of 4) ...................................................................... 41
Figure 1-66 Remove the formatter PCA for fax + wireless models (4 of 4) ...................................................................... 41
Figure 1-67 Remove the fax PCA (1 of 2) ........................................................................................................................... 42
Figure 1-68 Remove the fax PCA (2 of 2) ........................................................................................................................... 42
Figure 1-69 Remove the laser scanner assembly and cable (1 of 2) ................................................................................ 43
Figure 1-70 Remove the laser scanner assembly and cable (2 of 2) ................................................................................ 44
Figure 1-71 Remove the motor PCA (1 of 2) ...................................................................................................................... 45
Figure 1-72 Remove the motor PCA (2 of 2) ...................................................................................................................... 46
Figure 1-73 Remove the motor PCA bracket ..................................................................................................................... 46
xii ENWW
Figure 1-74 Remove the motor, simple method (1 of 4) ................................................................................................... 47
Figure 1-75 Remove the motor, simple method (2 of 4) ................................................................................................... 47
Figure 1-76 Remove the motor, simple method (3 of 4) ................................................................................................... 48
Figure 1-77 Remove the motor, simple method (4 of 4) ................................................................................................... 48
Figure 1-78 Remove the motor, complex method (1 of 3) ................................................................................................ 49
Figure 1-79 Remove the motor, complex method (2 of 3) ................................................................................................ 49
Figure 1-80 Remove the motor, complex method (3 of 3) ................................................................................................ 50
Figure 1-81 Remove the engine controller PCA (1 of 12) .................................................................................................. 51
Figure 1-82 Remove the engine controller PCA (2 of 12) .................................................................................................. 52
Figure 1-83 Remove the engine controller PCA (3 of 12) .................................................................................................. 52
Figure 1-84 Remove the engine controller PCA (4 of 12) .................................................................................................. 53
Figure 1-85 Remove the engine controller PCA (5 of 12) .................................................................................................. 53
Figure 1-86 Remove the engine controller PCA (6 of 12) .................................................................................................. 54
Figure 1-87 Remove the engine controller PCA (7 of 12) .................................................................................................. 54
Figure 1-88 Remove the engine controller PCA (8 of 12) .................................................................................................. 55
Figure 1-89 Remove the engine controller PCA (9 of 12) .................................................................................................. 55
Figure 1-90 Remove the engine controller PCA (10 of 12) ................................................................................................ 56
Figure 1-91 Remove the engine controller PCA (11 of 12) ................................................................................................ 56
Figure 1-92 Remove the engine controller PCA (12 of 12) ................................................................................................ 57
Figure 1-93 Reinstall the engine controller PCA (1 of 4) ................................................................................................... 57
Figure 1-94 Reinstall the engine controller PCA (2 of 4) ................................................................................................... 58
Figure 1-95 Reinstall the engine controller PCA (3 of 4) ................................................................................................... 58
Figure 1-96 Reinstall the engine controller PCA (4 of 4) ................................................................................................... 59
Figure 1-97 Remove the fuser and delivery sensor PCA (1 of 4) ....................................................................................... 60
Figure 1-98 Remove the fuser and delivery sensor PCA (2 of 4) ....................................................................................... 61
Figure 1-99 Remove the fuser and delivery sensor PCA (3 of 4) ....................................................................................... 61
Figure 1-100 Remove the fuser and delivery sensor PCA (4 of 4) ..................................................................................... 62
Figure 1-101 Reinstall the fuser; correct wire harness installation ................................................................................. 62
Figure 1-102 Reinstall the fuser; incorrect wire harness installation .............................................................................. 63
Figure 1-103 Remove the pickup assembly and pickup sensor PCA (1 of 4) .................................................................... 64
Figure 1-104 Remove the pickup assembly and pickup sensor PCA (2 of 4) .................................................................... 65
Figure 1-105 Remove the pickup assembly and pickup sensor PCA (3 of 4) .................................................................... 65
Figure 1-106 Remove the pickup assembly and pickup sensor PCA (4 of 4) .................................................................... 66
Figure 1-107 Reinstall the pickup assembly; correct ground spring position (1 of 4) ..................................................... 66
Figure 1-108 Reinstall the pickup assembly; incorrect ground spring position (2 of 4) .................................................. 67
Figure 1-109 Reinstall the pickup assembly; lift plate in raised position (3 of 4) ............................................................ 68
Figure 1-110 Reinstall the pickup assembly; lift plate in lowered position (4 of 4) ......................................................... 68
Figure 1-111 Separate the scanner lid or document feeder from the scan base (1 of 2) ................................................. 69
Figure 1-112 Separate the scanner lid or document feeder from the scan base (2 of 2) ................................................. 70
Figure 1-113 Remove the scan bezel (1 of 2) .................................................................................................................... 71
Figure 1-114 Remove the scan bezel (2 of 2) .................................................................................................................... 72
ENWW xiii
Figure 1-115 Remove the scan drive system .................................................................................................................... 73
Figure 1-116 Remove the scan FFC cable (1 of 3) .............................................................................................................. 74
Figure 1-117 Remove the scan FFC cable (2 of 3) .............................................................................................................. 75
Figure 1-118 Remove the scan FFC cable (3 of 3) .............................................................................................................. 75
Figure 1-119 Remove the scan motor (1 of 2) ................................................................................................................... 76
Figure 1-120 Remove the scan motor (2 of 2) ................................................................................................................... 77
Figure 1-121 Reinstall the scan motor .............................................................................................................................. 77
Figure 1-122 Remove the scanner spring assembly (1 of 2) ............................................................................................. 78
Figure 1-123 Remove the scanner spring assembly (2 of 2) ............................................................................................. 78
Figure 1-124 Reinstall the scanner spring assembly ........................................................................................................ 79
Figure 1-125 Remove the ADF top cover (1 of 2) ............................................................................................................... 80
Figure 1-126 Remove the ADF top cover (2 of 2) ............................................................................................................... 80
Figure 1-127 Remove the ADF core (1 of 2) ....................................................................................................................... 81
Figure 1-128 Remove the ADF core (2 of 2) ....................................................................................................................... 81
Figure 1-129 Remove the ADF separation pad assembly (1 of 3) ..................................................................................... 80
Figure 1-130 Remove the ADF separation pad assembly (2 of 3) ..................................................................................... 82
Figure 1-131 Remove the ADF separation pad assembly (3 of 3) ..................................................................................... 83
Figure 1-132 Reinstall the ADF separation pad assembly (1 of 5) .................................................................................... 83
Figure 1-133 Reinstall the ADF separation pad assembly (2 of 5) .................................................................................... 84
Figure 1-134 Reinstall the ADF separation pad assembly (3 of 5) .................................................................................... 84
Figure 1-135 Reinstall the ADF separation pad assembly (4 of 5) .................................................................................... 85
Figure 1-136 Reinstall the ADF separation pad assembly (5 of 5) .................................................................................... 85
Figure 1-137 Remove the ADF inner tray ........................................................................................................................... 86
Figure 1-138 Remove the ADF input guides and gear (1 of 3) .......................................................................................... 87
Figure 1-139 Remove the ADF input guides and gear (2 of 3) .......................................................................................... 87
Figure 1-140 Remove the ADF input guides and gear (3 of 3) .......................................................................................... 88
Figure 1-141 Remove the ADF pre-pickup arm assembly (1 of 2) .................................................................................... 89
Figure 1-142 Remove the ADF pre-pickup arm assembly (2 of 2) .................................................................................... 89
Figure 2-1 Covers and external components ..................................................................................................................... 96
Figure 2-2 Internal assemblies (1 of 3) .............................................................................................................................. 98
Figure 2-3 Internal assemblies (2 of 3) ............................................................................................................................ 100
Figure 2-4 Internal assemblies (3 of 3) ............................................................................................................................ 102
Figure 2-5 Scanner lid, base models ................................................................................................................................ 104
Figure 2-6 Scanner assembly, base models .................................................................................................................... 106
Figure 2-7 Scan drive system, all models ........................................................................................................................ 108
Figure 2-8 Scanner and document feeder assembly, fax models ................................................................................... 110
Figure 2-9 Scanner assembly, fax models ....................................................................................................................... 112
Figure 2-10 Document feeder assembly, fax models ..................................................................................................... 114
Figure 2-11 Document feeder top cover, fax models ...................................................................................................... 116
Figure 2-12 Document feeder core, fax models .............................................................................................................. 118
xiv ENWW
1 Removal and replacement
●
Removal and replacement strategy
●
Service approach
●
Removal and replacement procedures
ENWW 1
Removal and replacement strategy
Introduction
This chapter describes the removal and replacement of field-replaceable units (FRUs) only.
Replacing FRUs is generally the reverse of removal. Notes are included to provide directions for difficult or
critical replacement procedures.
HP does not support repairing individual subassemblies or troubleshooting to the component level.
Never operate or service the product with the protective cover removed from the laser scanner assembly.
The reflected beam, although invisible, can damage your eyes.
The sheet-metal parts can have sharp edges. Be careful when handling sheet-metal parts.
CAUTION: Some parts are sensitive to electrostatic discharge (ESD). Look for the ESD reminder when
removing product parts. Always perform service work at an ESD-protected workstation or mat. If an ESD
workstation or mat is not available, ground yourself by touching the sheet-metal chassis before touching an
ESD-sensitive part.
Protect the ESD-sensitive parts by placing them in ESD pouches when they are out of the product.
CAUTION: Do not bend or fold the flat flexible cables (FFCs) during removal or installation.
NOTE: To install a self-tapping screw, first turn it counterclockwise to align it with the existing thread
pattern, and then carefully turn it clockwise to tighten. Do not overtighten. If a self-tapping screw-hole
becomes stripped, repair the screw-hole or replace the affected assembly.
Required tools
●
#2 Phillips screwdriver with a magnetic tip and a 152-mm (6-inch) shaft length
●
Small flat-blade screwdriver
●
Torx® drivers, sizes T9 and T10
●
Needle-nose pliers
●
ESD strap (if one is available)
●
Penlight
CAUTION: Always use a Phillips screwdriver (callout 1). Do not use a pozidrive screwdriver (callout 2) or any
motorized screwdriver. These can damage screws or screw threads.
Figure 1-1 Screwdrivers
2 Chapter 1 Removal and replacement ENWW
CAUTION: Do not pull directly on the wires to disconnect them. Always pull on the plastic body of a
connector to avoid damaging the connector wires.
Types of screws
WARNING! Make sure that components are replaced with the correct screw type. Using an incorrect screw
(for example, substituting a long screw for the correct shorter screw) can cause damage to the product or
interfere with product operation. Do not intermix screws that are removed from one component with the
screws that are removed from another component.
Table 1-1 Types of screws
Illustration Description Size Part number Use
Screw, pan head, silver M3×6 0515-2908 Used to secure electrical
Screw, pan head, black M3×8 0515-4681 Used to secure the left
Screw, tapping, pan head,
black
M4×10 0515-4680 Used to secure the front
boards and ground wires
cover
cover
ENWW Removal and replacement strategy 3
Service approach
Before performing service
WARNING! Turn the product off, wait 5 seconds, and then remove the power cord before attempting to
service the product. If this warning is not followed, severe injury and damage to the device can result. The
power must be on for certain functional checks during troubleshooting. However, the power supply should be
disconnected during parts removal.
●
Remove all media.
●
Place the product on an ESD mat (if available).
●
Remove the toner cartridge. See
●
Remove the input tray. See
After performing service
●
Reinstall the input tray.
●
Load paper in the tray.
●
Reinstall the toner cartridge.
●
Plug in the power cable and turn on the product.
Parts removal order
If multiple components must be removed to gain access to an assembly, the first step of the removal
procedure lists all of the components that must be removed to gain access to that assembly. Use these lists
to determine which parts must be removed before removing other parts.
Toner cartridge on page 5.
Input tray on page 6.
4 Chapter 1 Removal and replacement ENWW
Removal and replacement procedures
Customer-replaceable parts
Toner cartridge
1. Open the scanner assembly.
Figure 1-2 Remove the toner cartridge (1 of 3)
2. Open the cartridge door.
Figure 1-3 Remove the toner cartridge (2 of 3)
ENWW Removal and replacement procedures 5
Input tray
3. Remove the toner cartridge.
Figure 1-4 Remove the toner cartridge (3 of 3)
▲
Pull the input tray straight out to remove it.
Figure 1-5 Remove the input tray
6 Chapter 1 Removal and replacement ENWW
Short-media extender
▲
Pull the short media extender straight out to remove it.
Figure 1-6 Remove the short-media extender
Pickup roller
CAUTION: Do not touch the sponge portion of the roller. Skin oils can cause paper handling problems.
1. Open the scanner assembly.
Figure 1-7 Remove the pickup roller (1 of 5)
ENWW Removal and replacement procedures 7
2. Open the cartridge door.
Figure 1-8 Remove the pickup roller (2 of 5)
3. Remove the toner cartridge.
Figure 1-9 Remove the pickup roller (3 of 5)
8 Chapter 1 Removal and replacement ENWW
4. Release two tabs.
Figure 1-10 Remove the pickup roller (4 of 5)
5. Rotate the roller away from the product to remove it.
Figure 1-11 Remove the pickup roller (5 of 5)
ENWW Removal and replacement procedures 9
Separation pad
CAUTION: Do not touch the sponge portion of the pad. Skin oils can cause paper handling problems.
1. Rotate the product on to the left side.
Figure 1-12 Remove the separation pad (1 of 2)
2. On the bottom of the product, remove two screws (callout 1), and then remove the separation pad
(callout 2).
Figure 1-13 Remove the separation pad (2 of 2)
2
1
10 Chapter 1 Removal and replacement ENWW
Handset (M128fp model only)
1. Disconnect the phone cable from the bottom fax port.
Figure 1-14 Remove the handset (1 of 2)
2. Open the scanner assembly, and then lift the handset platform straight up to remove it.
Figure 1-15 Remove the handset (2 of 2)
ENWW Removal and replacement procedures 11
Covers and external components
Paper-delivery tray (output bin extension)
▲
Slide the paper-delivery tray to one side, and carefully flex it to release two tabs. Remove the paperdelivery tray.
Figure 1-16 Remove the paper-delivery tray
12 Chapter 1 Removal and replacement ENWW
Left cover
Before proceeding, remove the following components:
●
Paper-delivery tray. See
Remove the left cover
1. On the rear of the product, remove one screw (callout 1).
Figure 1-17 Remove the left cover (1 of 2)
Paper-delivery tray (output bin extension) on page 12.
1
2. Rotate the product onto the right side. On the bottom of the product, release one tab (callout 1), and
remove the left cover.
Figure 1-18 Remove the left cover (2 of 2)
1
ENWW Removal and replacement procedures 13
Scanner assembly
Before proceeding, remove the following components:
●
Paper-delivery tray. See
Paper-delivery tray (output bin extension) on page 12.
●
Left cover. See
Remove the scanner assembly
NOTE: The M127fw and M128fw models are shown in the following photos. Other models look slightly
different, but the procedure is the same. For photos that show the differences, see
on page 33.
1. Disconnect the scanner FFC (callout 1).
M127 and M128 models only: Disconnect one wire harness connector (callout 2), and remove it from
the cable guide (callout 3).
Figure 1-19 Remove the scanner assembly (1 of 4)
3
2
1
Left cover on page 13.
Left-side PCAs
14 Chapter 1 Removal and replacement ENWW
2. Support the scanner assembly, release one tab (callout 1), and then remove the scanner support
(callout 2).
CAUTION: The scanner assembly is not captive and can easily be separated from the product base if it
is opened too far.
Figure 1-20 Remove the scanner assembly (2 of 4)
1
2
3. Carefully feed the FFC through the slot in the chassis (callout 1).
M127 and M128 models only: Remove the document-feeder grounding-cable screw (callout 2).
Figure 1-21 Remove the scanner assembly (3 of 4)
2
1
ENWW Removal and replacement procedures 15
4. Lift the scanner assembly up and off of the product base.
Figure 1-22 Remove the scanner assembly (4 of 4)
16 Chapter 1 Removal and replacement ENWW
Cartridge door
Before proceeding, remove the following components:
●
Paper-delivery tray. See
Paper-delivery tray (output bin extension) on page 12.
●
Left cover. See
●
Scanner assembly. See
Remove the cartridge door
1. Open the cartridge door. Use a small flat-blade screwdriver to release the tab on the support arm on the
right.
Figure 1-23 Remove the cartridge door (1 of 3)
Left cover on page 13.
Scanner assembly on page 14.
2. Release the two hinges by pulling outward on the supports.
Figure 1-24 Remove the cartridge door (2 of 3)
ENWW Removal and replacement procedures 17
3. Remove the cartridge door.
Figure 1-25 Remove the cartridge door (3 of 3)
18 Chapter 1 Removal and replacement ENWW
Loading...