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惠普M125 M126 M127 M128激光打印机维修手册错误代码拆机图解
发布时间:2019-09-17 21:18   浏览次数: 次  
惠普M125 M126 M127 M128激光打印机维修手册包括机器的基本工作原理,故障诊断与排除,机器的拆卸与备件更换
惠普M125 M126 M127 M128维修手册

本手册的中文版请查阅
惠普M125 M126 M127 M128中文维修手册故障代码排除拆装图解
http://www.echao8.com/hpmanual/607.html

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https://item.taobao.com/item.htm?id=602662657270
惠普M125 M126 M127 M128维修手册英文版淘宝订购网址
https://item.taobao.com/item.htm?id=559820723591


惠普M125 M126 M127 M128激光打印机维修手册目录
Table of contents
1 Theory of operation ....... 1
工作原理
Basic operation ...... 2
Major product systems 2
Product block diagram 2
Sequence of operation 3
Normal sequence of operation . 3
Formatter-control system ..... 4
Sleep mode .. 4
Input/output 4
CPU ....... 4
Memory 4
Firmware ... 5
PJL overview 5
LEDM overview .... 5
ACL overview ....... 5
Control panel ....... 5
Engine-control system .. 6
Motors, solenoids, switches, and sensors .. 7
DC controller operations ... 10
Fuser-control circuit .. 11
Fuser failure detection ... 12
Fuser temperature control ..... 13
Fuser protective function ....... 14
Pressure roller cleaning .. 14
Low-voltage power supply ....... 15
Over-current/over-voltage protection .. 17
High-voltage power supply ....... 18
Laser/scanner system ....... 19
Laser failure detection .... 19
Image-formation system .... 21
Electrophotographic process .... 21
Image formation process .. 23
Latent-image formation stage ....... 24
Primary charging .. 24
Laser beam exposure ... 24
Developing stage .... 25
Toner cartridge ..... 25
Transfer stage . 26
Fusing stage . 26
Cleaning stage ...... 27
Pickup, feed, and delivery system ...... 28
Photo sensors, motor, and solenoid . 29
Jam detection .... 30
Scanner system ... 31
Electrical system ....... 31
Scanner power-on sequence of events .. 31
Copy or scan-to-computer sequence of events ..... 32
Document feeder functions and operation . 33
Document feeder operation ...... 33
Document feeder paper path and document feeder sensors .. 33
Document feeder jam detection ....... 34
Fax functions and operation ....... 35
Computer and network security features 35
PSTN operation . 35
The fax subsystem .... 35
Fax card in the fax subsystem .. 35
Safety isolation ....... 36
Safety-protection circuitry ..... 36
Data path . 36
Hook state ....... 36
Downstream device detection 37
Hook switch control 37
Ring detect ...... 37
Line current control 37
Billing- (metering-) tone filters ...... 37
Fax page storage in flash memory ... 37
Stored fax pages ..... 38
Advantages of flash memory storage .... 38
2 Solve problems ... 39
故障诊断与排除
Solve problems checklist ..... 40
Troubleshooting process .... 42
Determine the problem source . 42
vi ENWW
Power subsystem ...... 43
Power-on checks .... 43
Tools for troubleshooting ... 44
Component diagnostics .... 44
Engine diagnostics .. 44
Engine-test page .. 44
Drum rotation functional check .. 44
Half self-test functional check ..... 44
Diagrams ... 46
Plug/jack locations . 46
Location of connectors ... 47
Locations of major components ..... 48
General timing chart ....... 53
General circuit diagram .. 54
Internal print-quality test pages ...... 55
Clean the paper path ....... 55
Print the configuration page .. 55
Print-quality troubleshooting tools . 57
Repetitive defect ruler .... 57
Control panel menus . 58
Touchscreen control panel ..... 58
Setup menu .. 58
Fax Menu ....... 65
Copy Menu .... 67
LCD control panel .... 69
Setup menu .. 69
Copy menu .... 77
Interpret control-panel messages .... 79
Control-panel message types 79
Control-panel messages 79
Clear jams .... 86
Solve paper feed or jam problems .... 86
The product does not pick up paper ....... 86
The product picks up multiple sheets of paper ...... 86
Frequent or recurring paper jams .. 86
Prevent paper jams . 87
Clear jams from the input tray .. 88
Clear jams in the toner-cartridge area ..... 91
Clear jams in the output bin ...... 94
Clear jams in the document feeder ... 97
Solve paper-handling problems .. 99
ENWW vii
Solve image-quality problems .. 100
General print-quality issues ... 100
Copy print-quality problems ... 104
Scan-quality problems .... 105
Prevent scan-quality problems .... 105
Solve scan-quality problems 105
Clean the product ...... 106
Clean the pickup roller and separation pad .... 106
Clean the paper path ....... 112
Clean the toner-cartridge area ....... 113
Clean the exterior .... 116
Check the scanner glass for dirt and smudges ....... 117
Clean the pickup rollers and separation pad in the document feeder ... 118
Solve performance problems .... 119
Solve connectivity problems ..... 120
Solve direct-connect problems ...... 120
Solve wired network problems ....... 120
Poor physical connection ..... 120
The computer is using the incorrect IP address for the product . 120
The computer is unable to communicate with the product 121
The product is using incorrect link and duplex settings for the network ... 121
New software programs might be causing compatibility problems ... 121
The computer or workstation might be set up incorrectly .. 121
The product is disabled, or other network settings are incorrect ....... 121
Solve wireless network problems .. 122
Wireless connectivity checklist .... 122
The product does not print after the wireless configuration completes .... 123
The product does not print, and the computer has a third-party firewall installed ... 123
The wireless connection does not work after moving the wireless router or
product .. 123
Cannot connect more computers to the wireless product .. 123
The wireless product loses communication when connected to a VPN ...... 123
The network does not appear in the wireless networks list ....... 123
The wireless network is not functioning ...... 124
Perform a wireless network diagnostic test 124
Reduce interference on a wireless network 124
Service mode functions ..... 126
Secondary service menu . 126
Open the secondary service menu ....... 126
Secondary service menu structure ...... 126
Product resets . 128
viii ENWW
Restore factory settings ....... 128
NVRAM initialization ..... 128
Solve fax problems .... 129
Check the hardware setup ...... 129
Faxes are sending slowly 130
Fax quality is poor ... 131
Fax cuts off or prints on two pages 132
Product updates 133
Appendix A Service and support .... 135
Hewlett-Packard limited warranty statement . 136
HP's Premium Protection Warranty: LaserJet toner cartridge limited warranty statement ... 137
HP policy on non-HP supplies ... 138
HP anticounterfeit Web site ...... 139
Data stored on the toner cartridge ... 140
End User License Agreement .... 141
OpenSSL ..... 143
Customer self-repair warranty service ..... 144
Customer support ...... 145
Appendix B Product specifications . 147
Physical specifications ...... 148
Power consumption, electrical specifications, and acoustic emissions .. 148
Environmental specifications .... 148
Appendix C Regulatory information ....... 149
FCC regulations .. 150
Environmental product stewardship program . 151
Protecting the environment ... 151
Ozone production .... 151
Power consumption 151
Toner consumption . 151
Paper use . 151
Plastics .... 151
HP LaserJet print supplies ...... 152
Return and recycling instructions ... 152
United States and Puerto Rico ...... 152
Multiple returns (more than one cartridge) ....... 152
Single returns ..... 152
Shipping ...... 152
ENWW ix
Non-U.S. returns ... 153
Paper ....... 153
Material restrictions (LaserJet Pro MFP M125-M126 series) . 153
Material restrictions (LaserJet Pro MFP M127-M128 series) . 153
Disposal of waste equipment by users ... 154
Electronic hardware recycling 154
Chemical substances ....... 154
Material Safety Data Sheet (MSDS) 154
EPEAT ...... 154
For more information ...... 154
Declaration of conformity (M125a-M125ra) .... 156
Declaration of conformity (M125nw-M126nw) 158
Declaration of conformity (M127fn-M128fn) ... 160
Declaration of conformity (M127fp-M128fp) ... 162
Declaration of conformity (M127fw-M128fw) . 164
Safety statements ..... 166
Laser safety ..... 166
Canadian DOC regulations ...... 166
VCCI statement (Japan) ... 166
Power cord instructions .. 166
Power cord statement (Japan) ....... 166
EMC statement (Korea) ... 167
Laser statement for Finland ... 167
GS statement (Germany) 168
Substances Table (China) 168
SEPA Ecolabel User Information (China) 168
Restriction on Hazardous Substances statement (Turkey) ... 169
Restriction on Hazardous Substances statement (Ukraine) .. 169
Eurasian Conformity (Belarus, Kazakhstan, Russia) ...... 169
Additional statements for telecom (fax) products ... 170
EU Statement for Telecom Operation .... 170
New Zealand Telecom Statements . 170
Additional FCC statement for telecom products (US) .... 170
Telephone Consumer Protection Act (US) ...... 171
Industry Canada CS-03 requirements .... 171
Vietnam Telecom wired/wireless marking for ICTQC Type approved products .... 172
Additional statements for wireless products ... 173
FCC compliance statement—United States ... 173
Australia statement 173
Brazil ANATEL statement 173
Canadian statements ...... 173
Products with 5 GHz Operation Industry of Canada ....... 173
Exposure to Radio Frequency Radiation (Canada) . 173
European Union regulatory notice .. 174
Notice for use in France .. 174
Notice for use in Russia ... 174
Mexico statement ... 174
Taiwan statement ... 175
Korean statement ... 175
Vietnam Telecom wired/wireless marking for ICTQC Type approved products .... 172
Index ... 177
List of tables
Table 1-1 Sequence of operation . 3
Table 1-2 Motors ... 7
Table 1-3 Solenoids ...... 8
Table 1-4 Switches ....... 8
Table 1-5 Sensors . 9
Table 1-6 DC controller controlled components ....... 10
Table 1-7 DC power supply specifications . 16
Table 1-8 Photo sensors, motor, and solenoid .. 29
Table 1-9 Document feeder sensors .. 33
Table 2-1 Basic problem solving 40
Table 2-2 HP Web Services menu (touchscreen control panel) 58
Table 2-3 Reports menu (touchscreen control panel) ....... 59
Table 2-4 Self Diagnostics menu (touchscreen control panel) . 59
Table 2-5 Fax Setup menu (touchscreen control panel) ... 59
Table 2-6 System Setup menu (touchscreen control panel) ..... 62
Table 2-7 Service menu (touchscreen control panel) 64
Table 2-8 Network Setup menu (touchscreen control panel) ... 65
Table 2-9 Fax Menu (touchscreen control panel) ...... 65
Table 2-10 Copy Menu (touchscreen control panel) .. 67
Table 2-11 HP Web Services menu (LCD control panel) .... 69
Table 2-12 PhoneBook Number menu (LCD control panel) ....... 69
Table 2-13 Fax Functions menu (LCD control panel) . 70
Table 2-14 Reports menu (LCD control panel) .. 70
Table 2-15 Fax Setup menu (LCD control panel) ....... 71
Table 2-16 System Setup menu (LCD control panel) . 74
Table 2-17 Service menu (LCD control panel) .... 76
Table 2-18 Network Setup menu (LCD control panel) ....... 76
Table 2-19 Copy menu (LCD control panel) ....... 77
Table 2-20 Control-panel messages .. 79
Table 2-21 General print-quality issues .. 100
Table 2-22 Copy print-quality problems . 104
Table 2-23 Scan-quality problems .. 105
ENWW xiii
Table 2-24 Secondary service menu 126
Table B-1 Physical specifications ..... 148
Table B-2 Product dimensions with input tray opened ... 148
Table B-3 Operating-environment specifications ... 148
List of figures
Figure 1-1 Product block diagram 2
Figure 1-2 Engine-control system 6
Figure 1-3 Motors . 7
Figure 1-4 Solenoids ..... 8
Figure 1-5 Switches ...... 8
Figure 1-6 Sensors 9
Figure 1-7 DC controller block diagram ..... 10
Figure 1-8 Fuser control circuit .. 11
Figure 1-9 Fuser-heater control circuit ...... 13
Figure 1-10 Low-voltage power supply (LVPS) . 15
Figure 1-11 High-voltage power supply .... 18
Figure 1-12 Laser/scanner system .... 19
Figure 1-13 Electrophotographic process block diagram (1 of 2) ..... 21
Figure 1-14 Electrophotographic process block diagram (2 of 2) ..... 22
Figure 1-15 Image formation process ....... 23
Figure 1-16 Primary charging .... 24
Figure 1-17 Laser beam exposure ..... 24
Figure 1-18 Toner cartridge ....... 25
Figure 1-19 Transfer ... 26
Figure 1-20 Separation ....... 26
Figure 1-21 Fusing ...... 27
Figure 1-22 Drum cleaning . 27
Figure 1-23 Pickup, feed, and delivery system block diagram . 28
Figure 1-24 Photo sensors, motor, and solenoid ...... 29
Figure 1-25 Document feeder paper path and document feeder sensors 33
Figure 2-1 Engine controller PCA connectors .... 47
Figure 2-2 Main PCAs .. 48
Figure 2-3 Motor . 49
Figure 2-4 Solenoid .... 50
Figure 2-5 Sensors ...... 51
Figure 2-6 Cross section view ..... 52
Figure 2-7 General timing diagram .... 53
Figure 2-8 Circuit diagram .. 54
拆装手册
Table of contents
1 Removal and replacement ...... 1
拆卸与更换
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
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
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
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

需要下载惠普M125 M126 M127 M128中文维修手册请访问以下淘宝链接
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