This is a comprehensive service manual for the HP LaserJet 3050, 3052, and 3055. It contains detailed diagrams, pictures, and procedures for diagnosing and repairing the copier. Whether you are a professional mechanic or a DIY enthusiast, this manual provides valuable information for maintaining and repairing your HP LaserJet 3050, 3052, or 3055.
The manual covers a wide range of topics including product information, operation, maintenance, theory of operation, removal and replacement, troubleshooting, parts and diagrams, as well as appendices for specifications, service and support, and regulatory information.
Product Information
All-in-one configurations
All-in-one features
All-in-one parts
Model and serial numbers
Software installation
Printer drivers
Supported printer drivers
Additional drivers
Software for Windows and Macintosh
Choosing paper and other print media
Supported media weights and sizes
Media to avoid
Media that can damage the all-in-one
Operation
Site preparation
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
Maintenance
Managing supplies
Life expectancies of print cartridges and parts that wear
Ordering supplies
Storing print cartridges
Replacing and recycling supplies
Cleaning the all-in-one
Calibrating the scanner
Managing and maintaining the all-in-one
Theory of Operation
Basic operation
Sequence of operation
Formatter system
Central processing unit
Engine control system
Image-formation system
Print-engine control system
Power system
Scanner and ADF functions and operation
Fax functions and operation
Computer and network security features
Removal and Replacement
Removal and replacement strategy
Required tools
Parts removal order
Before and after performing service
Post-service tests
Troubleshooting
Troubleshooting process
Control-panel messages
Alert and warning messages
Critical error messages
Jams and print paper-feed problems
Print and scan/copy image-quality problems
ADF and fax troubleshooting
Functional checks
Troubleshooting tools
Parts and Diagrams
Ordering parts and supplies
Parts that wear
World-wide customer support
Accessories and documentation
How to use the parts lists and diagrams
Replacing the printer engine assembly
The manual also includes appendices for all-in-one specifications, service and support, and regulatory information, as well as an index for easy reference. With 406 pages of detailed information, this manual is an essential resource for anyone working with the HP LaserJet 3050, 3052, or 3055.
