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HP LASERJET M4345MFP, Service Manual & Parts List
This service manual, is the full HP Laserjet M4345 MFP Service Repair Manual.
This manual, HP Laserjet M4345 MFP, is in the PDF format and have detailed Diagrams, pictures and full procedures to diagnose and repair your HP Laserjet M4345 MFP copier.
You can print, zoom or read any diagram, picture or page from this Service 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 M4345 MFP photocopier. You can find easily everything what do you need.
To see what contain, please read table of contents:
1. Product information
Device comparison
Features comparison
Walkaround
Accessories and supplies
Interface ports
Locking and unlocking optional accessories
Media specifications
Select print media
General media specifications
Media considerations
Envelopes
Envelopes with double side seams
Envelopes with adhesive strips or flaps
Envelope margins
Envelope storage
Labels
Label construction
Transparencies
Card stock and heavy media
Card stock construction
Card stock guidelines
Letterhead and preprinted forms
Select the correct fuser mode
2. Installation
Site preparation
Operating environment
Installation checklist
Optional output and input devices
Connect to a computer or network
USB configuration
Network connection
Fax connection
Analog faxing
Connecting the fax accessory to a phone line
Configuring and using the fax features
Digital faxing
Device software
Supported operating systems
Supported operating systems
Select the correct printer driver
Universal printer drivers
Driver Autoconfiguration
Update Now
HP Driver Preconfiguration
Priority for print settings
Open the printer drivers
Software for Macintosh computers
Remove software from Macintosh operating systems
Utilities
HP Web Jetadmin
Embedded Web server
HP Easy Printer Care software
Supported operating systems
Supported browsers
Other components and utilities
Network configuration
Configure TCP/IPv4 parameters
Change the IP address
Set the subnet mask
Set the default gateway
Configure TCP/IPv6 parameters
Disable network protocols (optional)
Disable IPX/SPX
Disable AppleTalk
Disable DLC/LLC
HP Jetdirect EIO print servers
Security features
Securing the embedded Web server
Foreign Interface Harness (FIH)
Requirements
Using the FIH
Secure Disk Erase
Data affected
Gaining access to Secure Disk Erase
Additional Information
Job-storage features
HP DSS authentication
Locking the control-panel menus
Locking the formatter cage
3. Manage and maintain the device
Control-panel menus
Use the control panel
Control-panel layout
Home screen
Buttons on the touchscreen
Control-panel help system
Navigate the Administration menu
Information menu
Default Job Options menu
Default Options for Originals
Default Copy Options
Default Fax Options
Default E-mail Options
Default Send to Folder Options
Default Print Options
Time/Scheduling menu
Management menu
Initial Setup menu
Networking and I/O
Fax Setup
E-mail Setup
Send Setup menu
Device Behavior menu
Print Quality menu
Troubleshooting menu
Resets menu
Service menu
Use information pages
Configure e-mail alerts
HP Easy Printer Care software
Open the HP Toolbox FX
HP Toolbox FX sections
Use the embedded Web server
Open the embedded Web server by using a network connection
Embedded Web server sections
Use HP Web Jetadmin software
Use the HP Printer Utility for Macintosh
Open the HP Printer Utility
HP Printer Utility features
Manage supplies
Supplies life expectancy
Change the print cartridge
Manage the print cartridge
Print-cartridge storage
Use genuine HP print cartridges
HP policy on non-HP print cartridges
Print-cartridge authentication
HP fraud hotline and Web site
Clean the device
Clean the exterior
Clean the scanner glass
Clean the scanner lid backing
Clean the paper path
Clean the document feeder
Clean the document feeder delivery system
Clean the document feeder-rollers
Set the real-time clock
Set the date and time
Set the date format
Set the date
Set the time format
Set the time
Set the wake time
Set the sleep delay
Upgrading the firmware
Determining the current level of firmware
Downloading the new firmware from the HP Web site
Transferring the new firmware to the MFP
Using FTP to upgrade the firmware on a network connection
Using HP Web Jetadmin to upgrade the firmware
Using MS-DOS commands to upgrade the firmware
Upgrading the HP Jetdirect firmware
Calibrate the scanner
Calibrate the control panel
Disable Embedded Jetdirect I/O
Select the MFP language
4. Theory of operation
Basic operation
Sequence of operation (printer)
Sequence of operation (scanner)
Formatter system
Sleep mode
Resolution Enhancement technology (REt)
EconoMode
Input/output
CPU
Memory
Hard disk
Random-access memory
DIMM slot
Firmware
Nonvolatile memory
HP Memory Enhancement technology
PJL overview
PML
Control panel
Scanner interface
Engine-control system
DC controller PCA
Motors and fans
Motor and fan functions
Ambient-temperature detection
Engine power supply circuit
Fuser control
Fuser over-temperature protection
High-voltage power supply
Low-voltage power supply
Overcurrent/overvoltage protection
Toner detection
Cartridge detection
Laser/scanner system
Laser/scanner control
Image-formation system
Print cartridge
Cartridge memory
Image-formation process
Pickup, feed, and delivery system
Pickup-and-feed block
Printing from tray 1
Printing from tray 2
Media-size detection
Cassette media-size detection
Media-length detection
Media-width detection
Cassette pickup operation
Lifter-driver operation
Multifeed prevention
Distance-between-pages adjustment
Media-skew prevention
Feed-speed control
Fusing and reversing/delivery block
Fusing
Face-down delivery
Face-up delivery
Jam detection
Pickup delay jam from tray 1
Pickup delay jam from tray 2
Pickup stationary jam
Fuser-delivery delay jam
Fuser wrapping jam
Fuser-delivery stationary jam when feeding regular-size media
Fuser-delivery stationary jam when feeding custom-size media
Reversing delay jam (face-down delivery only)
Reversing stationary jam (face-down delivery only)
Delivery delay jam during face-down delivery
Delivery delay jam during face-up delivery
Delivery stationary jam during face-down delivery
Delivery stationary jam during face-up delivery
Door-open jam
Residual-media jam
Printing from the 500-sheet feeder
500-sheet feeder pickup and feeding
Duplex-printing unit
Reversing/duplexing pickup
Duplex-printing jam detection
Duplex-unit-pickup delay jam
Duplex-unit stationary jam
Duplex-unit delay jam
3-bin mailbox system
Stacker mode
Mailbox mode
Function-separator mode
Jam detection
Feed-delay jam
Feed-stationary jam
Residual-media jam
Power-on sequence
MBM driver
MBM switches and sensors
MBM PCBs
MBM list of signals
Stapler/stacker system
Power-on sequence
Staple mode
Jogger operation
Jogger home-position detection
Stacker mode
Jam detection
Stapler unit
Staple home position detection
Self-priming detection
Staple level detection
Stapler/stacker switches and sensors
Stapler/stacker motors, solenoid, and fan
Stapler/stacker PCBs
Stapler/stacker driver PCB
Stapler/stacker driver list of signals
Scanner system
Electrical system
Motors and fans
Optical assembly
ADF feed system
Jam detection
Residual-media jam
ADF pickup jam
ADF jam
Registration sensor jam
Read sensor jam
Exit sensor jam
ADF cover open jam
ADF open jam
Locations of major components
Sensors and switches
Cassette sensors
Sensors in the print-cartridge area
Sensors on the reversing unit (top side)
Sensors in the interior of the MFP
Output-bin detection switch, SW103
Tray 1 paper-present sensor, PS105
Top-cover switch, SW101
Tray 2 jam-access-cover switch, SW105
Motors, fans, solenoids, and clutch
Front-side fans
Rear-side fans
Rear-side motors (1 of 2)
Rear-side motors (2 of 2)
Rear-side solenoid
Reversing-unit motors and solenoids
Right, rear corner components (1 of 2)
Right, rear corner components (2 of 2)
Scanner and ADF components
ADF output-bin-full sensor
ADF pickup assembly sensors
ADF motors, solenoid, and sensors
5. Removal and replacement
Service approach
Removal and replacement strategy
Required tools
Before performing service
After completing service
Screws that are used in the MFP
User-replaceable parts
Print cartridge
Control-panel overlays
Control panel
Transfer roller
ADF input tray
ADF pickup and feed rollers
ADF separation pad
ADF delivery guide (clear mylar sheet)
Output-bin assembly
Duplex-printing unit
Fuser-entrance guide
Fuser
Tray 2, 3, 4, or 5 pickup and feed rollers
Tray 1 pickup roller
Scanner filter cover and scanner filter
ADF-hinge flap
Formatter cover and formatter
Hard drive
DIMM
Fax accessory
Covers, doors, and external panels
Top-cover flatbed flange
Front cover
Back cover
Internal assemblies
Reversing-separation-guide assembly
Reversing assembly
Main fan (FN101) and reversing-unit fan (FN103)
Thermistor (TH3)
Tray 2 jam-access-cover switch (SW105)
Tray 1 assembly
Front-cover support
Tray 1 feed-assembly
Feed-roller assembly
DC controller
Main motor (M101)
DC controller fan (FN104)
Print-cartridge fan (FN102)
Print-cartridge motor (M102)
Top-cover switch (SW101)
Registration assembly
Paper-pickup-drive assembly
Lifter-drive assembly
Power-factor-correction (PFC) power supply
Engine power supply
Paper-feed assembly
Tray 2 detection switch
Paper-size-detection switch (SW102)
Tray 2 paper-present sensor (PS101)
Laser/scanner
Output-bin-full sensor
ADF and scanner components
ADF assembly
Scanner assembly
Scanner-controller PCA
ADF components
ADF output-bin extension
ADF white mylar-backing
ADF front cover
ADF rear cover
ADF left-side cover
ADF jam-access cover and latch
ADF leading-edge and paper-present sensors
ADF hinges
500-sheet feeder components
500-sheet-feeder pickup and feed rollers
Stapler/stacker components
Delivery tray
Front cover
Rear cover
Left cover
Top cover
Bottom cover
Stapler unit
Jogger unit
Stapler/stacker driver PCB
3-bin mailbox components
Rear cover
Front cover
Delivery tray
Left cover
Upper cover
Right-door unit
Bottom cover
MBM driver PCB
6. Problem solving
Problem-solving checklist
Factors that affect performance
Problem-solving flowchart
Power-on checks
Power-on troubleshooting overview
Formatter lights
HP Jetdirect Inside LEDs
Heartbeat LED
Fax LED
Diagrams for troubleshooting
DC controller connections
Scanner-controller PCA connections
General timing chart
General circuit diagrams
Solve general device problems
Control-panel message types
Control-panel messages
Common causes of jams
Clear jams
Clear jams from the top-cover and print-cartridge areas
Clear jams from the optional envelope-feeder area
Clear jams from the tray 1 area
Clear jams from the tray 2, 3, 4, or 5 areas
Clear jams from the optional duplexer
Clear jams from the output areas
Clear jams from the fuser
Clear jams from the document feeder
Solve repeated jams
Paper-path test
Clear staple jams
Solve print-quality problems
Print-quality problems associated with media
Print-quality problems associated with the environment
Print-quality problems associated with jams
Overhead transparency defects
Image defect examples
Light print (partial page)
Light print (entire page)
Specs
Dropouts
Lines
Gray background
Toner smear
Loose toner
Repeating defects
Repeating image
Misformed characters
Page skew
Wrinkles or creases
Vertical white lines
Tire tracks
White spots on black
Scattered lines
Blurred print
Random image repetition
Repetitive defect ruler
Solve network printing problems
Solve copy problems
Prevent copy problems
Image problems
Media-handling problems
Performance problems
Solve fax problems
Solve sending problems
Solve receiving problems
Solve e-mail problems
Validate the SMTP gateway address
Validate the LDAP gateway address
Solve network connectivity problems
Troubleshooting network printing problems
Loopback test
Ping test
Solve stapler/stacker problems
Solve 3-bin mailbox problems
Functional checks
Early boot diagnostic test
Engine test
Formatter test
Half self-test
Drum-rotation test
MFP resets
Cold reset
NVRAM initialization
Hard-disk initialization
Individual component diagnostics
Paper-path-sensor test
Manual sensor test
Scanner tests
Component test
Service ID
Restoring the Service ID
Converting the service ID to an actual date
Troubleshooting the embedded HP Jetdirect print server
Firmware-stack trace
Solve common Windows problems
Solve common Macintosh problems
Solve Linux problems
Solve PostScript problems
General problems
7. Parts and diagrams
Order parts, accessories, and supplies
Order directly from HP
Order through service or support providers
Order directly through the embedded Web server
How to use the parts lists and diagrams
Screws that are used in the MFP
Customer-replaceable parts and accessories
Accessories
Customer-replaceable components (print engine)
Customer-replaceable components (ADF and scanner)
Cables and interfaces
Control panel and control-panel overlays
Memory
Print cartridge and maintenance kits
Documentation, software, and training material
Assembly locations
External components
Print-engine internal components
Upper-plate assembly
Internal components (1 of 5)
Internal components (2 of 5)
Internal components (3 of 5)
Internal components (4 of 5)
Internal components (5 of 5)
Electrical/forward assembly
Main drive assembly
Paper-pickup-drive assembly
Lifter-drive assembly
Cassette
Paper-feed roller assembly
Registration assembly
Multipurpose assembly
Reverse assembly
Reverse-separation-guide assembly
Delivery assembly
Fuser
ADF components
ADF assembly
ADF internal components (1 of 3)
ADF internal components (2 of 3)
ADF internal components (3 of 3)
ADF input tray
ADF separation pad
ADF separation-pad case
ADF pickup-roller assembly
ADF pickup-roller cover
ADF mylar-holder assembly
ADF mylar replacement kit
Scanner components
Scanner-base components
Scanner flatbed-unit assembly
Scanner covers
Cassette
Optional devices
Duplex-printing accessory
Stapler/stacker
3-bin mailbox
Alphabetical parts list
Numerical parts list
Appendix A Specifications
Physical specifications
Electrical specifications
Acoustic specifications
Operating environment
Appendix B Product warranty statements
Hewlett-Packard limited warranty statement
Customer Self Repair Warranty Service
HP Customer Care
Online Services
Telephone support
Software utilities, drivers, and electronic information
Fax accessory support
HP direct ordering for accessories or supplies
HP service information
HP service agreements
HP Toolbox FX
HP support and information for Macintosh computers
HP maintenance agreements
On-site service agreements
Next-day on-site service
Weekly (volume) on-site service
Repacking the device
Extended warranty
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
HP print supplies returns and recycling program information
Paper
Material restrictions
Disposal of waste equipment by users in private households in the European Union
Material Safety Data Sheet (MSDS)
For more information
Telecom statement
Declaration of conformity
Safety statements
Laser safety
Canadian DOC regulations
VCCI statement (Japan)
Power cord statement (Japan)
EMI statement (Korea)
Laser statement for Finland
Index
Numbers of pages: 654.
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