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HP LaserJet 3050, 3052, 3055 All-in-One, Service Manual + Parts List

Service Manual HP LaserJet 3050, 3052, 3055;
This service manual, is the full HP LaserJet 3050, 3052, 3055 Service Repair Manual.
This manual, HP LaserJet 3050, 3052, 3055, is in the PDF format and have detailed Diagrams, pictures and full procedures to diagnose and repair your HP LaserJet 3050, 3052, 3055 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 3050, 3052, 3055 photocopier. You can find easily everything what do you need.
To see what contain, please read table of contents:

1. PRODUCT INFORMATION
All-in-one configurations
HP LaserJet 3050 all-in-one
HP LaserJet 3052/3055 all-in-one
All-in-one features
All-in-one parts
HP LaserJet 3050 all-in-one parts
Front view
Back view
Interface ports
Control panel
HP LaserJet 3052/3055 all-in-one parts
Front view
Back view
Interface ports
Control panel
Model and serial numbers
Software installation
Typical installation
Minimum installation
Printer drivers
Supported printer drivers
Additional drivers
Select the correct printer driver
Printer-driver Help (Windows)
Gaining access to the printer drivers
What other software is available?
Software for Windows
Software components for Windows
HP ToolboxFX
Embedded Web server (EWS)
Using Add or Remove Programs to uninstall
Software for Macintosh
HP Director
Macintosh Configure Device (Mac OS X V10.3 and Mac OS X V10.4)
PDEs (Mac OS X V10.3 and Mac OS X V10.4)
Installing software for Macintosh
Installing Macintosh printing system software for direct
connections (USB)
Installing Macintosh printing system software for networks
To remove software from Macintosh operating systems
Choosing paper and other print media
Supported media weights and sizes
Media to avoid
Media that can damage the all-in-one

2. OPERATION
Site preparation
Prepare the location
Operating environment
Minimum system requirements
Unpacking
Contents of the HP LaserJet 3050 all-in-one box
Contents of the HP LaserJet 3052/3055 all-in-one box
Installing input devices
Installing the print cartridge
Loading media into the input trays
Loading documents to fax, copy, or scan
Loading input trays
Priority input slot
250-sheet input tray (tray 1)

3. MAINTENANCE
Managing supplies
Life expectancies of print cartridges and parts that wear
Ordering supplies
Storing print cartridges
Replacing and recycling supplies
Changing the print cartridge
Changing the ADF pickup roller and load-arm assembly (HP LaserJet 3052/3055 all-in-one)
HP policy on non-HP supplies
HP fraud hotline
Cleaning the all-in-one
To clean the exterior
To clean the ADF scanner glass and white platen (HP LaserJet 3050 all-in-one)
To clean the flatbed glass and the ADF scanner glass (HP LaserJet 3052/3055 all-in-one)
To clean the lid backing (HP LaserJet 3052/3055 all-in-one)
To clean the ADF pickup-roller assembly (HP LaserJet 3052/3055 all-in-one)
Cleaning the paper path
To clean the paper path from HP ToolboxFX
To clean the paper path from the all-in-one control panel
Calibrating the scanner
Managing and maintaining the all-in-one
Information pages
Demo page
Usage page
Configuration page
Network configuration page
Fax logs and reports
HP ToolboxFX
To view HP ToolboxFX
Status
Event log
Fax
Fax tasks
Fax phone book
Fax Send Log
Fax Receive Log
Help
System settings
Device information
Paper handling
Print quality
Paper types
System setup
Service
Device polling
Print settings
Printing
PCL5e
PostScript
Network settings
Macintosh Configure Device (Mac OS X V10.3 and Mac OS X V10.4)
Embedded Web server
Features

4 THEORY OF OPERATION
Basic operation
Sequence of operation
Sequence of operation, HP LaserJet 3050 all-in-one scanner
Sequence of operation, HP LaserJet 3052/3055 all-in-one scanner
Sequence of operation, HP LaserJet 3050/3052/3055 all-in-one printer (product base)
HP LaserJet 3050/3052/3055 all-in-one timing diagram�printer (product base)
Formatter system
Central processing unit
Line interface unit (HP LaserJet 3050 all-in-one and HP LaserJet 3055 all-in-one only)
Standard startup process
All-in-one startup messages
RAM
USB interface
Control panel
Economode
MEt
Enhanced I/O
PJL overview
Printer (product base) functions
Engine control system (engine control unit and power-supply assembly)
Print-engine control system
Printer (product base) laser/scanner
Power system on the power-supply assembly
Ac power distribution
Dc power distribution
Overcurrent/overvoltage
High-voltage power distribution
Image-formation system
The seven image-formation processes
Print cartridge
Printer (product base) paper-feed system
Jam detection in the all-in-one
Conditions of jam detection
HP LaserJet 3050 all-in-one unique components
Basic operation
ADF pickup-and-feed system
Optical scanning system
HP LaserJet 3052/3055 all-in-one unique components
Scanner and ADF functions and operation
Scanner functions
Scanner operation
ADF operation
ADF paper path and ADF sensors
ADF jam detection
Fax functions and operation (HP LaserJet 3050 all-in-one and HP LaserJet 3055 all-in-one only)
Computer and network security features
PSTN operation
Distinctive ring function
Faxing with Voice over IP services
The fax subsystem
Formatter in the fax subsystem
LIU in the fax subsystem
Safety isolation
Safety-protection circuitry
Data path
Hook state
Downstream current 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

5. REMOVAL AND REPLACEMENT
Removal and replacement strategy
Electrostatic discharge
Required tools
Before performing service
After performing service
Post-service tests
Test 1 (print-quality test)
Test 2 (copy-quality test)
Test 3 (fax-quality test)
Parts removal order
HP LaserJet 3050 all-in-one
Link assemblies and scanner support-frame springs
Scanner side covers
Separation-pad set
Control-panel bezel
Control-panel assembly
Media lever and media-lever torsion spring
Separation-pad assembly
Scanner assembly
Scanner assembly top cover
Top-cover assembly
Pickup roller
White platen
HP LaserJet 3052/3055 all-in-one
ADF input tray
Flatbed lid
Link assemblies and scanner support-frame springs
Control-panel bezel
Control-panel assembly
ADF separation pad
ADF input-tray flag
ADF pickup roller and load-arm assembly (HP LaserJet 3052/3055 all-in-one)
ADF scanner glass
Scanner assembly
Printer (product base)
Printer separation pad
Print cartridge
Printer pickup roller
Installing the scanner cushions
Media input tray
Transfer roller
Side covers
Print-cartridge door
Rear cover and fuser cover
Front cover
Speaker assembly
Power supply
Formatter and line interface unit (LIU)
Scanner support-frame
Engine controller unit (ECU)
Laser/scanner assembly
Main motor
Fuser
Paper-pickup assembly

6. TROUBLESHOOTING
Troubleshooting process
Troubleshooting checklist
Control-panel messages
Alert and warning messages
Alert and warning message tables
Critical error messages
Critical error message-tables
Event-log codes
Jams
Causes of jams
Tips to avoid jams
Where to look for jams
Print cartridge area
Input trays
Output bin
Solving print paper-feed problems
Paper-feed solutions, printing
Jams occur in the automatic document feeder (ADF)
Solving ADF paper-feed problems
Paper-feed solutions, scanning/copying
Print image-quality problems
Checking the print cartridge
To redistribute the toner in the print cartridge
Solving print image-quality problems
Print image-quality solutions
Scan/copy image-quality problems
Scan/copy image-quality solutions
ADF problems
Fax troubleshooting (HP LaserJet 3050/3055 all-in-one)
General fax troubleshooting
Fax receive troubleshooting
Fax send troubleshooting
DSL problems
PABX line problems
Control-panel-display problems
Functional checks
Control-panel test
Half self-test functional check
To perform a half self-test check
To perform other checks
Drum-rotation functional check
High-voltage contacts check
To check the print-cartridge contacts
To check the high-voltage connector pins
Service-mode functions
Secondary service menu
To gain access to the secondary service menu
To print a list of all the fax data-store parameters
Developer's menu
To gain access to the developer's menu
To adjust fax data-store parameters
To scroll quickly to a particular data-store parameter
Changing the country/region code parameters
To change the country/region from one location to another
To set the language and location if none is set
Soft reset
Performing a soft reset
Super NVRAM init
To perform a super NVRAM init
NVRAM init
To perform an NVRAM init
System settings for localized products
Printer job language (PJL) software commands
Troubleshooting tools
Printing a configuration report, demonstration page, or menu structure
Printing all fax reports at once (HP LaserJet 3050/3055 all-in-one)
T.30 protocol trace (HP LaserJet 3050 all-in-one and HP LaserJet 3055 all-in-one only) 260
To print a T.30 protocol trace report
Fax error-correction mode (ECM) (HP LaserJet 3050 all-in-one and HP LaserJet 3055 all-in-one only)
V.34 fax standard
Fax receive and fax send codes
Translating the fax trace report (HP LaserJet 3050 all-in-one and HP LaserJet 3055 all-in-one only)
Repetitive image defect ruler
Firmware updates and recovery

7. PARTS AND DIAGRAMS
Ordering parts and supplies
Parts that wear
Parts
World-wide customer support
Accessories
Documentation
Common hardware
How to use the parts lists and diagrams
Replacing the printer engine assembly
Diagrams
Component locations, HP LaserJet 3050/3052/3055 all-in-one printer (product base)
Main wiring
Formatter PCA and LIU connectors
HP LaserJet 3050 all-in-one scanner assembly
ADF components, HP LaserJet 3050 all-in-one
Guide assembly, HP LaserJet 3050 all-in-one
HP LaserJet 3052/3055 all-in-one scanner assembly
Major assemblies, HP LaserJet 3052/3055 all-in-one
Scanner components, HP LaserJet 3052/3055 all-in-one
Printer (product base), HP LaserJet 3050/3052/3055 all-in-one
External covers, printer (product base)
Formatter and LIU
Internal components, printer (product base)
Alphabetical parts list
Numerical parts list

Appendix A: All-in-one specifications
Physical specifications
Electrical specifications
Power consumption
Environmental specifications
Acoustic emissions

Appendix B: Service and support
Hewlett-Packard limited warranty statement
Print Cartridge Limited Warranty Statement
Extended warranty

Appendix C: Regulatory information
FCC compliance
Environmental Product Stewardship program
Protecting the environment
Ozone production
Power consumption
Toner consumption
Paper use
Plastics
HP LaserJet printing supplies
HP Printing Supplies Returns and Recycling Program Information
U.S
Non-U.S
Paper
Material restrictions
Nederlands
Taiwan
Disposal of waste equipment by users in private household in the European Union
Material safety data sheet
For more information
Telephone Consumer Protection Act (United States)
IC CS-03 requirements
EU statement for telecom operation
New Zealand telecom statements
Declaration of conformity (HP LaserJet 3390, 3392, 3055, and 3050)
Declaration of conformity (HP LaserJet 3052)
Country-/region-specific safety statements
Laser safety statement
Canadian DOC statement
Korean EMI statement
Finnish laser statement

Index

Numbers of pages: 406.
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