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HP LaserJet 4L

HP LaserJet 4L
306 pages
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Combined Service Manual
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HP LaserJet 4L/ 4ML
(C2003A/ C2015A)
/
HP LaserJet 4P/ 4MP
(C2005A/ C2040A)
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HP LaserJet 4L Specifications

General IconGeneral
Print TechnologyLaser
Print Resolution600 x 600 dpi
Print Speed4 ppm
Input Capacity100 sheets
ConnectivityParallel
ProcessorMotorola 68000
Standard Memory1 MB
Maximum Memory5 MB
Printer LanguagePCL 4
Duty Cycle12, 000 pages per month
Paper SizesLetter, Legal, A4

Summary

Product Information

Printer Features

Detailed comparison of printer models' features, including speed, resolution, and memory.

Specifications

Technical specifications like dimensions, performance metrics, electrical, and environmental requirements.

Safety Information

Essential safety guidelines, including laser safety, toner handling, and electrical hazards.

Service Approach

Procedures for printer repair, including exchange programs and parts ordering.

Technical Assistance

Contact information and support resources for troubleshooting and product help.

Operating Requirements

Site Requirements

Guidelines for printer installation environment, including ventilation, power, and lighting.

Toner Cartridge Handling

Instructions for storing, handling, refilling, and recycling HP toner cartridges.

Media Specifications

Guidelines for selecting and using print media, including paper, envelopes, and labels.

Installation and Configuration

Unpacking and Installation

Step-by-step guide for unpacking, setting up, and installing the printer.

Using the Control Panel

Overview of printer control panel functions, lights, and buttons for operation.

Service Mode

Procedures for accessing and using the printer's service mode for diagnostics and configuration.

Resetting the Printer

Steps for resetting the printer's memory and restoring factory default settings.

Maintenance

Cleaning Printer Components

Methods for cleaning various printer components to maintain performance and print quality.

Clearing Paper Jams

Detailed instructions for clearing paper jams from different areas of the printer.

Functional Overview

DC ControllerPower System

Explanation of the DC controller's role in print engine activities and power distribution.

Formatter System

Details on the formatter PCA's functions, including data processing and communication.

Image Formation System

Description of the laser printing process stages and image development.

Paper Feed System

Explanation of how the printer feeds paper, including sensors and rollers.

Removal and Replacement

Removal and Replacement Strategy

General guidelines and warnings for removing and replacing printer parts.

Required Tools

List of specialized tools needed for printer disassembly and reassembly.

User Installable Assemblies

Instructions for upgrading memory modules on the printer.

Covers and Doors

Procedures for removing various printer covers and doors for access.

Left Side Assemblies

Steps for removing and replacing components located on the left side of the printer.

Front Assemblies

Procedures for removing and replacing components located at the front of the printer.

Internal Assemblies

Instructions for removing and replacing internal printer components.

Rear Assemblies

Procedures for removing and replacing components located at the rear of the printer.

Bottom Assemblies

Steps for removing and replacing components located at the bottom of the printer.

Troubleshooting

Troubleshooting Flowchart

A step-by-step guide to diagnose and resolve printer problems.

Printer Error Troubleshooting

Information on printer error messages, codes, and troubleshooting steps.

Image Formation Troubleshooting

Illustrations and causes of common image defects and their solutions.

Engine Test

Procedures for performing an engine test to diagnose print engine issues.

Paper Curl

Causes of paper curl and recommended steps to lessen its impact.

Adjustment Procedures

Guides for adjusting specific printer settings for optimal performance.

Parts and Diagrams

How to Use the Part Lists and Diagrams

Guidance on interpreting part lists and assembly diagrams for ordering.

Common Hardware

List and specifications of common fasteners used in printer assembly.

Accessories and Supplies

Information on ordering optional accessories and consumables for the printer.

Assembly Locations

Diagrams showing the location of major printer assemblies.

Appendix A Parts Index

Alphabetical Parts Index

An alphabetical listing of all printer parts with their part numbers and corresponding figures.

Appendix B IO Information

Serial Cable Pin Configurations

Pinout diagrams for DB-9 and DB-25 serial connections for the printer.

Connecting to LocalTalk Networks

Instructions for connecting the printer to a LocalTalk network.

Index

Alphabetical Index

An alphabetical listing of topics covered in the manual for quick reference.

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