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Q6503A LaserJet 3055 All-In-One Printer

HP LaserJet 3055 All-In-One Printer (Q6503A)

18ppm black, 1200 x 1200 DPI, Built-in 10/100 wired Ethernet network connectivity with 1 RJ-45 port; Hi-Speed USB (compatible with USB 2.0 specifications) port

MFG Part Number: Q6503A Unit Availability
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HP LaserJet 3050/3052/3055 printer series service manual

Q6503A Service Manual View Service Manual

Table of Contents

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
HP LaserJet 3052/3055 all-in-one parts
Model and serial numbers
Software installation
Minimum installation
Typical installation
Printer drivers
Software for Windows
Software for Macintosh
Choosing paper and other print media
Supported media weights and sizes
Media that can damage the all-in-one
Media to avoid
Site preparation
Operating environment
Prepare the location
Minimum system requirements
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
Managing supplies
Life expectancies of print cartridges and parts that wear
Ordering supplies
Storing print cartridges
HP fraud hotline
HP policy on non-HP supplies
Replacing and recycling supplies
Cleaning the all-in-one
To clean the ADF scanner glass and white platen (HP LaserJet 3050 all-in-one)
To clean the exterior
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
Calibrating the scanner
Managing and maintaining the all-in-one
Information pages
HP ToolboxFX
Macintosh Configure Device (Mac OS X V10.3 and Mac OS X V10.4)
Embedded Web server
Theory of operation
Basic operation
Sequence of operation
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
USB interface
Control panel
Enhanced I/O
PJL overview
Printer (product base) functions
Engine control system (engine control unit and power-supply assembly)
Image-formation system
Print cartridge
Printer (product base) paper-feed system
Jam detection in the all-in-one
HP LaserJet 3050 all-in-one unique components
Basic operation
HP LaserJet 3052/3055 all-in-one unique components
Scanner and ADF functions and operation
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
Formatter in the fax subsystem
The fax subsystem
LIU in the fax subsystem
Fax page storage in flash memory
Removal and replacement
Removal and replacement strategy
Electrostatic discharge
After performing service
Before performing service
Post-service tests
Required tools
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
Paper-pickup assembly
Troubleshooting process
Troubleshooting checklist
Control-panel messages
Alert and warning messages
Critical error messages
Event-log codes
Causes of jams
Tips to avoid jams
Print cartridge area
Where to look for jams
Input trays
Output bin
Solving print paper-feed problems
Jams occur in the automatic document feeder (ADF)
Solving ADF paper-feed problems
Print image-quality problems
Checking the print cartridge
Solving print image-quality problems
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
Control-panel-display problems
Functional checks
Control-panel test
Half self-test functional check
Drum-rotation functional check
High-voltage contacts check
Service-mode functions
Secondary service menu
Developer’s menu
Changing the country/region code parameters
Soft reset
Super NVRAM init
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)
Repetitive image defect ruler
Firmware updates and recovery
Parts and diagrams
Ordering parts and supplies
Parts that wear
World-wide customer support
Common hardware
How to use the parts lists and diagrams
Replacing the printer engine assembly
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
All-in-one specifications
Electrical specifications
Physical specifications
Environmental specifications
Power consumption
Acoustic emissions
Service and support
Hewlett-Packard limited warranty statement
Extended warranty
Print Cartridge Limited Warranty Statement
Regulatory information
FCC compliance
Environmental Product Stewardship program
Ozone production
Power consumption
Protecting the environment
HP LaserJet printing supplies
Disposal of waste equipment by users in private household in the European Union
For more information
Material safety data sheet
IC CS-03 requirements
Telephone Consumer Protection Act (United States)
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
Canadian DOC statement
Korean EMI statement
Laser safety statement
Finnish laser statement

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