HP LaserJet Pro 400 MFP M425 Service Manual and Parts List Manual
Present Service Manual contain: Repair Manual and Troubleshooting Manual HP LaserJet Pro 400 MFP M425;
This manual is in the PDF format and have detailed Diagrams, pictures and full procedures to diagnose and repair your HP copier.
You can print, zoom or read any diagram, picture or page from this Service Manual and Parts List Manual. Every chapter on this manual is fully detailed and contain all the simulation codes, trouble codes, maintenance procedures, reset procedures, diagnose procedures of HP LaserJet Pro 400 MFP M425 photocopier. You can find easily everything what do you need.
To see what contain, please read table of contents:
Content for REPAIR MANUAL:
1) REMOVAL AND REPLACEMENT
Removal and replacement strategy
Electrostatic discharge
Required tools
Types of screws
Service approach
Before performing service
After performing service
Post-service test
Print-quality test
Parts removal order
Removal and replacement procedures
Rollers
Multipurpose (MP) tray pickup roller
Multipurpose (MP) tray separation pad
Tray 2 and optional Tray 3 pickup roller
Tray 2 and optional Tray 3 separation pad
Document feeder rollers
Document feeder separation pad
Covers, scanner assembly, and control panel
Left cover
Scanner assembly
Control panel
Right cover
Top cover
Rear cover, rear door, and feed assembly
Cartridge door and front cover assembly
Main assemblies
Laser scanner assembly
Registration assembly
Fuser assembly and paper feed guide
Duplex drive assembly
Solenoids
Tray 1 solenoid
Duplex solenoid
Motors and fans
Main motor
Fan
Printed circuit-board assemblies (PCAs)
Engine controller assembly (DC controller) PCA
Universal serial bus (USB) PCA
Formatter PCA
Wireless PCA
Fax PCA
Power switch PCA
Connecting PCA
Miscellaneous parts
Transfer roller
Multipurpose (MP) tray pickup gear assembly
Document feeder assembly
Optional paper feeder (Tray 3)
Optional paper feeder right cover
Optional paper feeder driver PCA
Optional paper feeder paper sensor PCA
2) PARTS AND DIAGRAMS
Order parts by authorized service providers
Order replacement parts
Related documentation and software
Supplies part numbers
Whole-unit replacement part numbers
How to use the parts lists and diagrams
Assembly locations
Main unit
Optional paper feeder
Covers, panels, and doors
Internal assemblies
Scanner and document feeder
Input devices
500-sheet paper feeder
Paper feeder covers
Paper feeder main body (1 of 2)
Paper feeder main body (2 of 2)
Alphabetical parts list
Numerical parts list
Index
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Content TROUBLESHOOTING MANUAL:
1) THEORY OF OPERATION
Basic operation
Major product systems
Product components
Sequence of operation
Engine control system
DC controller
Motor control
Fan control
High-voltage power supply
Fuser control circuit
Fuser temperature control
Fuser protection function
Fuser failure detection
Low-voltage power supply
Protective function
Safety
Low-voltage power supply unit failure detection
Laser scanner system
Laser failure detection
Image-formation system
Image-formation process
Latent-image formation stage
Step 1: Primary charging
Step 2: Laser-beam exposure
Developing stage
Step 3: Development
Transfer stage
Step 4: Transfer
Step 5: Separation
Fusing stage
Step 6: Fusing
Drum cleaning stage
Step 7: Drum cleaning
Pickup and feed system
Jam detection
Paper feeder (optional Tray 3)
Paper feeder operation
Jam detection
Scanner system
Scanner power-on sequence of events
Copy or scan sequence of events
Fax functions and operation
Computer and network security features
PSTN operation
Receive faxes when you hear fax tones
Distinctive ring function
Use fax with voice over IP services
The fax subsystem
Fax card in the fax subsystem
Safety isolation
Safety-protection circuitry
Data path
Hook state
Downstream device detection
Hook switch control
Ring detect
Line current control
Billing- (metering-) tone filters
Fax page storage in flash memory
Stored fax pages
Advantages of flash memory storage
USB flash drive
2) SOLVE PROBLEMS
Solve problems checklist
Menu map
Troubleshooting process
Pre-troubleshooting checklist
Determine the problem source
Power subsystem
Power-on checks
Control-panel checks
Tools for troubleshooting
Component diagnostics
LED diagnostics
Network LEDs
Control panel LEDs
Engine diagnostics
Engine test
Diagrams
Plug/jack locations
Locations of major components
General timing chart
General circuit diagrams
Use HP Device Toolbox (Windows)
Internal print-quality test pages
Clean the paper path
Print the configuration page
Print-quality troubleshooting tools
Repetitive image defect ruler
Control panel menus
HP Web Services menu
Reports menu
Quick Forms menu
USB Flash Drive menu
System Setup menu
Service menu
Network Setup menu
Interpret control-panel messages
Control panel message types
Control panel messages
49 Error, Turn off then on
50.x Fuser Error
51.XX Error
54.XX Error
55.X Error
57 Fan Error, Turn off then on
59.X Error
79 Error Turn off then on
79 Service error
Black cartridge low
Black cartridge very low
Cleaning
Communication error
Device error, press OK
Document feeder door is open. Canceled fax
Door open
Fax is busy. Canceled send
Fax is busy. Redial pending
Fax receive error
Fax Send error
Fax storage is full. Canceling the fax receive
Fax storage is full. Canceling the fax receive
Fax storage is full. Canceling the fax send
Genuine HP supply installed
Incompatible black
Install black cartridge
Invalid driver Press [OK]
Jam in Tray 1, Clear jam and then press OK
Load Tray 1
Appendix A: Service and support
Hewlett-Packard limited warranty statement
HP’s Premium Protection Warranty: LaserJet toner cartridge limited warranty statement
HP policy on non-HP supplies
HP anticounterfeit Web site
Data stored on the toner cartridge
End User License Agreement
OpenSSL
Customer support
Repack the product
Appendix B: Product specifications
Physical specifications
Power consumption, electrical specifications, and acoustic emissions
Environmental specifications
Appendix C: Regulatory information
FCC regulations
Environmental product stewardship program
Protecting the environment
Ozone production
Power consumption
Toner consumption
Paper use
Plastics
HP LaserJet print supplies
Return and recycling instructions
United States and Puerto Rico
Multiple returns (more than one cartridge)
Single returns
Shipping
Non-U.S. returns
Paper
Material restrictions
Disposal of waste equipment by users
Electronic hardware recycling
Chemical substances
Material Safety Data Sheet (MSDS)
For more information
Declaration of conformity
Declaration of conformity
Safety statements
Laser safety
Canadian DOC regulations
VCCI statement (Japan)
Power cord instructions
Power cord statement (Japan)
EMC statement (Korea)
Laser statement for Finland
GS statement (Germany)
Substances Table (China)
Restriction on Hazardous Substances statement (Turkey)
Restriction on Hazardous Substances statement (Ukraine)
Additional statements for telecom (fax) products
EU Statement for Telecom Operation
New Zealand Telecom Statements
Additional FCC statement for telecom products (US)
Telephone Consumer Protection Act (US)
Industry Canada CS-03 requirements
Vietnam Telecom wired/wireless marking for ICTQC Type approved products
Additional statements for wireless products
FCC compliance statement-United States
Australia statement
Brazil ANATEL statement
Canadian statements
European Union regulatory notice
Notice for use in France
Notice for use in Russia
Mexico statement
Korean statement
Taiwan statement
Vietnam Telecom wired/wireless marking for ICTQC Type approved products
Index
HP LaserJet Pro400 MFPM425
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