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HP LaserJet 4200/4300 printer series service manual

Q2428A Service Manual View Service Manual

Table of Contents

Printer description
Printer configurations
Model and serial numbers
Site requirements
Printer specifications
Environmental specifications
Paper specifications
Supported sizes and weights of media
Supported types of media
Labels
Overhead transparencies
Envelopes
Card stock and heavy paper
Types of print media to avoid
Safety information
Laser safety
Laser safety statement (U.S.)
Print cartridge and toner safety
EMI statement (Korea)
VCCI statement (Japan)
Laser statement (Finland)
Regulatory information
FCC regulations
Environmental product stewardship program
HP Printing Supplies Returns and Recycling program information
Declarations of Conformity
Canadian DOC regulations
Declaration of Conformity
Service approach
Parts and supplies
Service approach
Ordering information
Related documentation and software
Support
Print-cartridge information
HewlettPackard limited warranty statement
Limited warranty for toner cartridge life
Printer operation
Using the control panel
Control-panel layout
Control-panel lights
Control-panel buttons
Using the printer Help system
Setting the control-panel display language
Settings and defaults
Control-panel menus
Overview
Printing and changing control-panel menus
Information menu
Retrieve Job menu
Paper Handling menu
Configure Device menu
Printer maintenance
Cleaning the printer and accessories
Cleaning the fuser
Running the cleaning page manually
Cleaning spilled toner
Running the cleaning page automatically
Performing preventative maintenance
Resetting the maintenance-kit counter
Expected life of components
Maintaining the stapler unit
Removing and replacing the stapler unit
Loading staples
Downloading a remote firmware update
Theory of operation
Introduction
Basic operation of the printer
General descriptions
DC controller PCA
Power supply
Laser/scanner assembly
Paper pickup system
Paper pickup and feed block
Printing from tray 1
Printing from tray 2
Media skew prevention
Fixing/delivery block
Printer jam detection
Printing from the 500-sheet feeder
Printing from the 1,500-sheet feeder
Envelope feeder
Envelope feeder jam detection
Duplexer
Duplexer jam detection
Stacker and stapler/stacker
Stacker
Stacker jam detection
Stapler/stacker
Stapler/stacker jam detection
Imageformation system
Electrostatic latentimage formation
Formatter system
PowerSave
Resolution Enhancement technology
EconoMode
Input/output
Printer memory
Control panel
PJL overview
PML
Removing and replacing parts
Removal and replacement strategy
After completing service
Before performing service
Required tools
Screws used in the printer
Parts-removal tree
Printer input tray, and cabinet wheel locks
User-replaceable parts
Print cartridge
Transfer roller
Tray 1 pickup roller
Tray 1 separation pad
Tray 2 feed rollers
Covers, tray 1, and the rear output bin
Accessory covers and the tray 2 extension door
Formatter cover
Top cover
Rightside cover
Leftside cover
Tray 1
Rear output bin
Controlpanel display
Controlpanel overlay
Controlpanel assembly
Internal components
Firmware DIMM
Formatter assembly
Fuser
Output delivery assembly
Duplexing pendulum assembly
Tray 2 mediasize sensor
Main cooling fan (left side)
Cooling fan (right side; HP LaserJet 4300 series printer only)
Laser/scanner assembly
Print-cartridge motor (HP LaserJet 4300 series printer only)
Main motor
Tray 2 lifter-drive assembly
DC controller PCA
Paperpickup assembly,
Main drive assembly
Power supply
Paper-feed belt assembly
Tray 1 paperpickup assembly
Paper feed assembly
Registration assembly
Transfer assembly
Accessories
500sheet feeder assembly
1,500sheet feeder assembly
Troubleshooting
Introduction
Troubleshooting process
Initial troubleshooting checklist
Troubleshooting flowchart
Power-on checks
Troubleshooting tools
Information pages
Embedded Web server
Gaining access to the embedded Web server
Printer Status and Alerts software
Controlpanel menus
Resets submenu
Using controlpanel menus
Diagnostics menu
Service menu (service PIN codes)
Printer resets and poweron modes
Cold reset
NVRAM initialization
Harddisk initialization
Poweron bypass
Test pages
Engine test page
Formatter test page
Interface troubleshooting
Communications checks
EIO troubleshooting
Displaymessage troubleshooting
Criticalerror messages
Error messages
Status messages
Warning messages
Alphabetical printer messages
Numerical printer messages
Paperpath troubleshooting
Overview
Paperjam recovery
Avoiding paper jams
Persistent jams
Media transport problems
Multiple pages feed
Paper is wrinkled or folded
Paper is skewed
Image-formation troubleshooting
Print quality problems associated with media
Overhead transparency defects
Print quality problems associated with jams
Print quality problems associated with the environment
Image defects
Image defect tables
Repetitive defects troubleshooting
Troubleshooting the stacker and the stapler/stacker
Initial checks
Overview
Jam errors
Malfunction errors
Paper transport errors
Component errors
Printer component locations
Main printer parts
Printer switches and sensors
Printer motors and fans
Printer PCAs
Accessory component locations
500sheet feeder main parts
500sheet feeder switches, sensors, solenoids, and PCAs
1,500sheet feeder main parts
1,500sheet feeder switches, sensors, solenoids, and PCAs
Stapler/stacker stapler assembly
Stacker and stapler/stacker switches and sensors
Stacker and stapler/stacker motors and solenoids
Stacker and stapler/stacker PCAs
Printer and accessory wiring diagrams
DC controller block diagram
General timing diagrams
Parts and diagrams
Ordering parts, supplies, and getting support
Ordering information
Related documentation and software
Support
Accessories and supplies
How to use the parts lists and diagrams
Parts diagrams and lists
Alphabetical parts list
Numerical parts list
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