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惠普M425多功能激光打印机维修手册故障代码查询拆装图解
发布时间:2018-06-10 20:27   浏览次数: 次  
惠普M425多功能激光打印机维修手册包含机器拆装手册:备件拆卸和更换以及备件列表和图示;故障诊断手册:工作原理介绍和故障诊断与排除,包括维修模式的进入和使用等。文中给出了手册的获取方法
M425打印机维修手册
惠普M425多功能激光打印机维修手册故障拍错手册
Table of contents
1 Theory of operation ...... 1
打印机工作原理
Basic operation 2
Major product systems ..... 2
Product components ........ 3
Sequence of operation ..... 4
Engine control system . 6
DC controller ........ 7
Motor control ........ 9
Fan control ......... 10
High-voltage power supply ....... 11
Fuser control circuit .. 12
Fuser temperature control ......... 13
Fuser protection function 14
Fuser failure detection .... 14
Low-voltage power supply ........ 16
Protective function .... 16
Safety . 17
Low-voltage power supply unit failure detection .... 17
Laser scanner system 18
Laser failure detection .... 19
Image-formation system ....... 20
Image-formation process 21
Latent-image formation stage .... 22
Step 1: Primary charging .... 22
Step 2: Laser-beam exposure ......... 23
Developing stage 23
Step 3: Development 23
Transfer stage ..... 24
Step 4: Transfer ....... 24
Step 5: Separation ... 24
Fusing stage ....... 25
Step 6: Fusing ......... 25
ENWW v
Drum cleaning stage ...... 26
Step 7: Drum cleaning ........ 26
Pickup and feed system ....... 27
Jam detection ..... 30
Paper feeder (optional Tray 3) ....... 32
Paper feeder operation .. 34
Jam detection ..... 35
Scanner system ........ 37
Scanner power-on sequence of events . 37
Copy or scan sequence of events ........ 38
Fax functions and operation 39
Computer and network security features ......... 39
PSTN operation .. 39
Receive faxes when you hear fax tones 39
Distinctive ring function .. 40
Use fax with voice over IP services ...... 40
The fax subsystem ......... 41
Fax card in the fax subsystem ... 41
Safety isolation ........ 41
Safety-protection circuitry .... 41
Data path ...... 42
Hook state ..... 42
Downstream device detection ........ 43
Hook switch control .. 43
Ring detect .... 43
Line current control ... 43
Billing- (metering-) tone filters ......... 43
Fax page storage in flash memory ...... 43
Stored fax pages ...... 44
Advantages of flash memory storage ........ 44
USB flash drive ........ 45
2 Solve problems . 47
故障拍错方法
Solve problems checklist ..... 48
Menu map .... 50
Troubleshooting process ...... 51
Pre-troubleshooting checklist ..... 51
Determine the problem source ... 53
Power subsystem . 54
Power-on checks ...... 54
Control-panel checks ..... 54
vi ENWW
Tools for troubleshooting ..... 55
Component diagnostics .. 55
LED diagnostics ........ 55
Network LEDs ..... 55
Control panel LEDs ........ 55
Engine diagnostics ... 56
Engine test 56
Diagrams . 57
Plug/jack locations ... 57
Locations of major components ...... 58
General timing chart . 60
General circuit diagrams ..... 61
Use HP Device Toolbox (Windows) ..... 64
Internal print-quality test pages .. 65
Clean the paper path ......... 65
Print the configuration page . 65
Print-quality troubleshooting tools ........ 65
Repetitive image defect ruler 65
Control panel menus ...... 67
HP Web Services menu ....... 67
Reports menu . 67
Quick Forms menu ... 68
USB Flash Drive menu ......... 69
System Setup menu ... 69
Service menu . 72
Network Setup menu 75
Interpret control-panel messages ......... 77
Control panel message types ......... 77
Control panel messages ...... 77
49 Error, Turn off then on ......... 77
50.x Fuser Error .. 77
51.XX Error ........ 77
54.XX Error ........ 78
55.X Error 78
57 Fan Error, Turn off then on ... 78
59.X Error 79
79 Error Turn off then on 79
79 Service error .. 79
Black cartridge low ....... 79
Black cartridge very low . 80
Cleaning .. 80
ENWW vii
Communication error. .... 80
Device error, press OK .. 81
Document feeder door is open. Canceled fax. 81
Door open 81
Fax is busy. Canceled send. ..... 81
Fax is busy. Redial pending. ..... 82
Fax receive error. 82
Fax Send error. ... 83
Fax storage is full. Canceling the fax receive. . 83
Fax storage is full. Canceling the fax receive. . 83
Fax storage is full. Canceling the fax send. ..... 84
Genuine HP supply installed ..... 84
Incompatible black ........ 84
Install black cartridge ..... 84
Invalid driver Press [OK] 84
Jam in Tray 1, Clear jam and then press OK .. 85
Load Tray 1 <TYPE> <SIZE>, Press OK to use available media ....... 85
Load Tray 1, <PLAIN> <SIZE> / Cleaning mode, OK to start ......... 85
Load tray <X> Press [OK] for available media 85
Load tray <X> <TYPE> <SIZE> .. 85
Manual Duplex Load Tray 1, Press OK 86
Manual feed <SIZE> <TYPE>, Press OK to use available media ...... 86
Memory is low. Press OK. ........ 86
Misprint, Press OK ......... 86
No dial tone. ...... 87
No fax answer. Canceled send. 87
No fax answer. Redial pending. ......... 87
No fax detected. . 88
Print failure, press OK. If error repeats, turn off then on. ....... 88
Rear door open ... 88
Remove shipping material from toner cartridge ......... 89
Replace black cartridge . 89
Unexpected size in tray <X> Load <size> Press [OK] . 89
Unsupported black cartridge Press [OK] to continue .. 89
Used black cartridge is installed Press [OK] to continue ....... 90
Event-log messages ....... 91
Print the event log ..... 91
Show an event log ... 91
Event log messages .. 91
Clear jams .... 94
Jam locations ...... 94
viii ENWW
Clear jams from the document feeder .. 95
Clear a jam in Tray 1 .... 96
Clear a jam in Tray 2 .... 98
Clear a jam in optional Tray 3 100
Clear jams from the output bin 101
Clear a jam in the duplexer area ...... 101
Clear a jam in the fuser area .. 102
Solve paper-handling problems .... 104
The product picks up multiple sheets of paper ......... 104
The product does not pick up paper .. 104
Solve image quality problems ...... 105
Print quality examples .. 105
Clean the product .. 110
Clean the pickup and separation rollers ....... 110
Clean the paper path .. 110
Clean the scanner glass strip and platen ...... 110
Clean the document feeder pickup rollers and separation pad ...... 111
Clean the touchscreen . 112
Solve performance problems ....... 113
Factors affecting print performance ... 113
Print speeds . 114
The product does not print or it prints slowly . 114
The product does not print . 114
The product prints slowly ... 115
Solve connectivity problems ......... 116
Solve direct-connect problems . 116
Solve network problems ......... 116
Poor physical connection ... 116
The computer is using the incorrect IP address for the product .. 116
The computer is unable to communicate with the product ........ 117
The product is using incorrect link and duplex settings for the network 117
New software programs might be causing compatibility problems ...... 117
The computer or workstation might be set up incorrectly 117
The product is disabled, or other network settings are incorrect 117
Solve wireless network problems ....... 118
Wireless connectivity checklist ..... 118
The control panel displays the message: The wireless feature on this product
has been turned off 119
The product does not print after the wireless configuration completes .. 119
The product does not print, and the computer has a third-party firewall
installed ...... 119
ENWW ix
The wireless connection does not work after moving the wireless router or
product ....... 119
Cannot connect more computers to the wireless product 119
The wireless product loses communication when connected to a VPN . 120
The network does not appear in the wireless networks list ....... 120
The wireless network is not functioning .... 120
Service mode functions ..... 121
Service menu .... 121
Service menu settings ........ 121
Restore the factory-set defaults ..... 121
Secondary service menu ........ 121
Open the secondary service menu 122
Secondary service menu structure . 122
Product resets ... 123
NVRAM initialization ........ 123
Super NVRAM initialization ......... 123
Solve fax problems . 124
Fax troubleshooting checklist .. 124
Solve problems receiving faxes ......... 126
The fax does not respond .. 126
The fax has a dedicated phone line ... 126
An answering machine is connected to the product . 126
A telephone handset is connected to the product ..... 127
The Answer Mode setting is set to the Manual setting ......... 127
Voice mail is available on the fax line 127
The product is connected to a DSL phone service .... 128
The product uses a fax over IP or VoIP phone service ......... 128
An error message displays on the control panel . 129
The No fax detected. message displays ....... 129
The Communication error. message displays 129
The Fax storage is full. message displays ..... 130
The Fax is busy. message displays .... 130
A fax is received but does not print ........ 131
The Private Receive feature is on ....... 131
Sender receives a busy signal ...... 131
A handset is connected to the product 131
A phone line splitter is being used ..... 131
No dial tone 131
Fax cuts off or prints on two pages ......... 132
Solve problems sending faxes . 132
An error message displays on the control panel . 133
x ENWW
The Communication error. message displays 133
No dial tone. .... 133
The Fax is busy. message displays .... 134
The No fax answer. message displays ......... 134
Document feeder paper jam ... 135
The Fax storage is full. message displays ..... 135
Scanner error ... 135
The control panel displays a Ready message with no attempt to send the fax . 136
The control panel displays the message "Storing page 1" and does not
progress beyond that message ..... 136
Faxes can be received, but not sent ........ 136
Unable to use fax functions from the control panel ........ 137
Unable to use speed dials . 137
Unable to use group dials . 137
Receive a recorded error message from the phone company when trying to
send a fax ... 138
Unable to send a fax when a phone is connected to the product ........ 138
Solve fax performance problems ....... 139
Faxes are sending slowly .. 139
Fax quality is poor . 140
Solve DSL problems ..... 140
Cannot send or receive a fax on a PBX line ....... 140
Manually update the firmware ..... 141
Appendix A Service and support ..... 143
Hewlett-Packard limited warranty statement ....... 144
HP's Premium Protection Warranty: LaserJet toner cartridge limited warranty statement ....... 146
HP policy on non-HP supplies ...... 147
HP anticounterfeit Web site ......... 148
Data stored on the toner cartridge 149
End User License Agreement ........ 150
OpenSSL ..... 153
Customer support ... 154
Repack the product 155
Appendix B Product specifications ... 157
Physical specifications ...... 158
Power consumption, electrical specifications, and acoustic emissions .. 158
Environmental specifications ........ 158
ENWW xi
Appendix C Regulatory information . 159
FCC regulations ..... 160
Environmental product stewardship program ..... 161
Protecting the environment ...... 161
Ozone production ....... 161
Power consumption ..... 161
Toner consumption ...... 161
Paper use ......... 161
Plastics ... 161
HP LaserJet print supplies ....... 162
Return and recycling instructions ....... 162
United States and Puerto Rico ...... 162
Multiple returns (more than one cartridge) .... 162
Single returns .... 162
Shipping 162
Non-U.S. returns .... 163
Paper .... 163
Material restrictions ..... 163
Disposal of waste equipment by users 164
Electronic hardware recycling . 164
Chemical substances ... 164
Material Safety Data Sheet (MSDS) ... 164
For more information ... 164
Declaration of conformity .. 166
Declaration of conformity .. 168
Safety statements ... 170
Laser safety ...... 170
Canadian DOC regulations .... 170
VCCI statement (Japan) 170
Power cord instructions 170
Power cord statement (Japan) . 170
EMC statement (Korea) 171
Laser statement for Finland ..... 171
GS statement (Germany) ........ 172
Substances Table (China) ....... 172
Restriction on Hazardous Substances statement (Turkey) ..... 172
Restriction on Hazardous Substances statement (Ukraine) ... 172
Additional statements for telecom (fax) products . 173
EU Statement for Telecom Operation . 173
New Zealand Telecom Statements ..... 173
Additional FCC statement for telecom products (US) 173
xii ENWW
Telephone Consumer Protection Act (US) ...... 174
Industry Canada CS-03 requirements 174
Vietnam Telecom wired/wireless marking for ICTQC Type approved products ... 175
Additional statements for wireless products ........ 176
FCC compliance statement—United States .... 176
Australia statement ...... 176
Brazil ANATEL statement ........ 176
Canadian statements ... 176
European Union regulatory notice ..... 176
Notice for use in France ......... 177
Notice for use in Russia ......... 177
Mexico statement ........ 177
Korean statement ........ 177
Taiwan statement ........ 178
Vietnam Telecom wired/wireless marking for ICTQC Type approved products ... 178

惠普M425多功能激光打印机维修手册机器拆装与备件更换手册
Table of contents
1 Removal and replacement ...... 1
机器拆装与备件更换
Removal and replacement strategy ... 2
Electrostatic discharge ..... 2
Required tools ....... 3
Types of screws .... 3
Service approach ....... 3
Before performing service 3
After performing service ... 4
Post-service test ..... 4
Print-quality test 4
Parts removal order ......... 5
Removal and replacement procedures ........ 6
Rollers ....... 6
Multipurpose (MP) tray pickup roller . 6
Multipurpose (MP) tray separation pad ....... 6
Tray 2 and optional Tray 3 pickup roller ..... 9
Tray 2 and optional Tray 3 separation pad ......... 10
Document feeder rollers ...... 11
Document feeder separation pad ... 12
Covers, scanner assembly, and control panel . 13
Left cover ...... 13
Scanner assembly .... 13
Control panel 15
Right cover .... 17
Top cover ...... 18
Rear cover, rear door, and feed assembly . 20
Cartridge door and front cover assembly .. 22
Main assemblies . 25
Laser scanner assembly ....... 25
Registration assembly ......... 26
Fuser assembly and paper feed guide ....... 28
Duplex drive assembly ........ 31
ENWW v
Solenoids . 34
Tray 1 solenoid ........ 34
Duplex solenoid ....... 35
Motors and fans .. 37
Main motor ... 37
Fan .... 39
Printed circuit-board assemblies (PCAs) 41
Engine controller assembly (DC controller) PCA .... 41
Universal serial bus (USB) PCA ...... 46
Formatter PCA ......... 48
Wireless PCA 48
Fax PCA ....... 49
Power switch PCA .... 50
Connecting PCA ...... 51
Miscellaneous parts ....... 52
Transfer roller 52
Multipurpose (MP) tray pickup gear assembly ...... 53
Document feeder assembly .. 54
Optional paper feeder (Tray 3) . 55
Optional paper feeder right cover .. 56
Optional paper feeder driver PCA .. 56
Optional paper feeder paper sensor PCA . 57
2 Parts and diagrams .... 61
备件图表
Order parts by authorized service providers ........ 62
Order replacement parts 62
Related documentation and software ... 62
Supplies part numbers ... 62
Whole-unit replacement part numbers .. 62
How to use the parts lists and diagrams .... 64
Assembly locations ... 65
Main unit . 65
Optional paper feeder ... 66
Covers, panels, and doors .. 68
Internal assemblies ... 70
Scanner and document feeder ....... 82
Input devices . 84
500-sheet paper feeder . 84
Paper feeder covers .. 84
Paper feeder main body (1 of 2) .... 86
Paper feeder main body (2 of 2) .... 88
vi ENWW
Alphabetical parts list ......... 90
Numerical parts list .. 94

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