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HP Laserjet Enterprice M4555 User Manual

HP Laserjet Enterprice M4555
32 pages
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Service Manual
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HP Laserjet Enterprice M4555 Specifications

General IconGeneral
Print TechnologyLaser
Print ResolutionUp to 1200 x 1200 dpi
Envelope Input CapacityUp to 100 envelopes
Scanner TypeFlatbed, ADF
Scan Resolution, OpticalUp to 600 dpi
Duplex ADF ScanningYes
Copy Speed (Black, Normal Quality, A4)Up to 55 cpm
Copy Resolution (Black Text)Up to 600 x 600 dpi
Fax Speed33.6 kbps
Fax MemoryUp to 500 pages
FunctionsPrint, Copy, Scan, Fax
Print SpeedUp to 55 ppm
Hard DiskOptional
Mobile Printing CapabilityYes
Wireless CapabilityYes
Standard ConnectivityUSB 2.0, Ethernet
Network ReadyYes
PortsUSB, Ethernet
Output CapacityUp to 500 sheets
Duplex PrintingYes
Media Sizes SupportedLetter, legal, statement, executive
Media TypesPaper (bond, color, letterhead, plain, preprinted, prepunched, recycled, rough), envelopes, labels, cardstock, transparencies
Automatic Document Feeder Capacity100 sheets
Copy Reduce / Enlarge Settings25% to 400%
Maximum Copies999
Fax Resolution BlackUp to 300 x 300 dpi
Operating System CompatibilityWindows, Mac, Linux
DisplayColor touchscreen

Summary

HP LaserJet Enterprise M4555 MFP Series Service Manual

Conventions Used in This Guide

Theory of Operation

Basic Operation and Control Systems

Covers product and scanner operation, formatter, engine, and fuser control.

Motors, Fans, and Power Supplies

Details the functions of motors, fans, and power supply units.

Safety and Other Functions

Addresses safety precautions and other operational aspects.

Theory of Operation (Continued)

Image-Formation System

Explains the electrophotographic process and related components.

Paper Handling Systems

Details paper pickup, feed, and delivery mechanisms, including jam detection.

Theory of Operation (Continued)

Document Feeder and Scanner Systems

Covers the operation and components of the document feeder and scanner.

Removal and Replacement Procedures

Service Procedures and Precautions

Outlines general service approaches, safety, and required tools.

Component Replacement: Print Cartridge, Fuser, Hard Drive

Instructions for replacing key components like the print cartridge, fuser, and hard drive.

Accessing Internal Assemblies

Guides on removing covers, feeders, and accessing main printer assemblies.

Removal and Replacement Procedures (Continued)

Covers and Document Feeder Disassembly

Detailed steps for removing various covers and the document feeder assembly.

Main Assemblies and Controllers

Procedures for replacing main assemblies and controller boards.

Removal and Replacement Procedures (Continued)

DC Controller and Feed Systems

Instructions for replacing the DC controller, pickup assemblies, and motors.

Fan and Power Supply Replacement

Procedures for replacing fans, power supplies, and related assemblies.

Removal and Replacement Procedures (Continued)

Document Feeder Components

Detailed steps for disassembling and removing document feeder parts.

Base and Scanner Assemblies

Procedures for accessing and removing the main base and scanner assemblies.

Removal and Replacement Procedures (Continued)

Scanner and Optional Feeder Parts

Instructions for replacing scanner parts and components of optional feeders.

Removal and Replacement Procedures (Continued)

Stapler/Stacker Accessory Components

Detailed steps for removing components of the stapler/stacker accessory.

Troubleshooting and Problem Solving

Troubleshooting Overview and Diagnostics

Guides users through troubleshooting processes, power, and scanner diagnostics.

Component and Sensor Testing

Details on testing various components, sensors, and paper path elements.

Troubleshooting and Problem Solving (Continued)

Sensor and Switch Testing

Specific procedures for testing sensors, switches, and paper path sensors.

Scanner Diagnostics and Tests

Covers scanner component tests and scanner sensor tests.

Troubleshooting and Problem Solving (Continued)

Component Tests and Diagrams

General component tests, block diagrams, and internal test pages.

Control Panel Menus and Settings

Overview of control panel menus, including administration and reports.

Troubleshooting and Problem Solving (Continued)

Control Panel Menu Navigation

Details on accessing and navigating various settings and maintenance menus.

Interpreting Messages and Error Codes

Explains control-panel messages, status alerts, and error code interpretation.

Troubleshooting and Problem Solving (Continued)

Error Codes and Messages (Part 1)

Lists and explains various error codes and system messages.

Troubleshooting and Problem Solving (Continued)

Error Codes and Messages (Part 2)

Continues listing and explaining error codes, including firmware and disk issues.

Troubleshooting and Problem Solving (Continued)

Error Codes and Messages (Part 3)

Details error codes for disk operations, system messages, and cartridge status.

Troubleshooting and Problem Solving (Continued)

Error Codes and Messages (Part 4)

Covers error messages related to device initialization, disk operations, and supplies.

Troubleshooting and Problem Solving (Continued)

Error Codes and Messages (Part 5)

Lists status messages and error codes for printing, memory, and device operations.

Troubleshooting and Problem Solving (Continued)

Error Codes and Messages (Part 6)

Details error codes for firmware upgrades, disk issues, and USB accessory problems.

Troubleshooting and Problem Solving (Continued)

Event Log and Jam Clearing

Guides on managing event logs and clearing various types of paper jams.

Jam Locations and Paper Feed Issues

Details on clearing jams in specific areas and troubleshooting paper feed problems.

Troubleshooting and Problem Solving (Continued)

Print Quality and Service Functions

Guides on solving print quality issues and using service mode functions.

Fax Troubleshooting

Covers common fax setup, operational problems, and error codes.

Parts and Diagrams Guide

Ordering Parts and Assembly Information

Guides on ordering parts, understanding assembly locations, and identifying components.

Covers, Internal Components, and Feeders

Details on covers, internal parts, and components of the base and optional feeders.

Parts and Diagrams Guide (Continued)

Input and Output Device Components

Parts breakdown for input (feeders) and output (stapler/stacker) devices.

Document Feeder and Scanner Components

Detailed parts list for the document feeder and scanner assemblies.

Appendix A: Service and Support

Warranty and Customer Support

Information on HP warranty statements, self-repair, and customer support resources.

Appendix B: Product Specifications

Technical Product Specifications

Details physical, power, electrical, and environmental specifications.

Appendix C: Regulatory Information

Environmental, Safety, and Telecom Compliance

Covers FCC, environmental stewardship, safety statements, and telecom regulations.

Regulatory Information (Continued)

Safety Statements and Telecom Regulations

Covers laser safety, power cord, EMC/EMI statements, and telecom regulations.

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