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Samsung ML-451 Series User Manual

Samsung ML-451 Series
241 pages
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MonoLaserPrinter
ML-451x/501xseries
ML-451xND/ML-501xND
(Ver1.01)
SERVICE
MANUAL
MonoLaserPrinter
Contents
1.Precautions
2.ProductSpecicationsandDescription
3.DisassemblyandReassembly
4.AlignmentandTroubleshooting
5.SystemDiagrams
6.ReferenceInformation
RefertotheservicemanualintheGSPN(seetherearcover)formoreinformation.

Table of Contents

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Samsung ML-451 Series Specifications

General IconGeneral
BrandSamsung
ModelML-451 Series
CategoryPrinter
LanguageEnglish

Summary

Precautions

Safety Warnings and Precautions

Covers general safety, electrical, handling, assembly, and ESD precautions to prevent injury and damage.

Product Specifications and Description

2.1. Printer Specifications

Overview of printer specifications including speed, resolution, processor, memory, and interfaces.

2.1.1. Product Overview

Overview of printer specifications including speed, resolution, processor, memory, and interfaces.

2.1.2. Detailed Specifications

Comprehensive technical specifications covering general, print, paper handling, software, and network details.

2.1.3. Model Comparison Table

Comparison table of Samsung ML-5010ND, ML-4551ND, and HP LJ-P4014 models.

2.2. Product Description

Diagrams and labels identifying the front and rear components of the printer.

2.2.1. Front and Rear Views

Diagrams and labels identifying the front and rear components of the printer.

2.2.2. Paper Path and System Layout

Illustrations of the paper path and internal layout of major printer components.

2.2.3. Major Component Descriptions

Details on paper feeding mechanisms, trays, pickup, registration, and multi-purpose feeder.

2.2.5. Feeding System Components

Details on paper feeding mechanisms, trays, pickup, registration, and multi-purpose feeder.

2.2.5.1. Feeding System Overview

Overview diagrams of the paper feeding system for ML-451x/501x series.

2.2.5.2. Main components and functions

Detailed diagram and list of main paper feeding components and their functions.

2.2.5.3. Paper Tray

Description and specifications of the main and optional paper trays.

2.2.5.4. Pick-Up unit

Explanation of the pick-up unit's mechanism for transporting paper.

2.2.5.5. Registration Unit

Details on the registration unit, its function, and variance specifications.

2.2.5.6. Multi-Purpose Feeder Unit

Specifications and function of the multi-purpose feeder unit for specialty media.

2.2.6. Image Creation Process

Explanation of the printer's image creation process and imaging unit.

2.2.6.1. Printing Process Overview

Overview of the printing process steps from charging to quenching.

2.2.6.2. Imaging Unit

Detailed overview of the imaging unit components and their functions.

2.2.7. Fuser Unit Details

Overview, components, drive, and temperature control of the fuser unit.

2.2.7.1. Fuser Unit Overview

Overview of the fuser unit, its instant fusing system, and temperature control components.

2.2.7.2. Fuser Unit Main Components

Description of the main components of the fuser unit, including lamps, rollers, and sensors.

2.2.7.3. Fuser Drive

Explanation of the drive mechanism that powers the fuser unit's components.

2.2.7.4. Temperature Control

Details on how the fuser unit's temperature is controlled and overheat protection mechanisms.

2.2.8. Laser Scanning Unit Details

Overview of the LSU's components, function, and optical path.

2.2.8.1. Laser Scanning Unit Overview

Overview of the LSU's components and function in forming a latent image.

2.2.8.2. Laser Scanning Optical Path

Diagram and explanation of the laser beam's path within the LSU.

2.2.9. Drive System Components

Description of drive motors, main drive unit, exit drive, and tray lifting drive.

2.2.9.1. Drive Motors

Diagrams showing the locations of the printer's drive motors.

2.2.9.2. Main Drive Unit

Diagrams of the main drive unit components and their couplings.

2.2.9.3. Exit Drive Unit

Diagram and power train explanation for the exit drive unit.

2.2.9.4. Tray Lifting Drive Unit

Diagram and power train explanation for the tray lifting drive unit.

2.2.10. Hardware Configuration

Overview of the printer's electrical circuit system, major boards, and their configurations.

2.2.10.1. Main Controller

Details on the main controller's architecture, memory, and connectivity.

2.2.10.2. OPE Controller

Description of the OPE controller types and their interfaces.

2.2.10.3. SMPS and FDB Board

Information on the SMPS and FDB boards, including specifications and connections.

2.2.10.4. HVPS Board

Details of the HVPS board and its connections for generating high voltages.

2.2.10.5. Other Circuit Boards

Information on Eraser PBA, Cover-Open PBA, Joint PBA, and Crum Joint PBAs.

2.2.11. Finisher Unit Description

Description of the finisher unit, its configuration, layout, electrical parts, and main board.

2.2.11.1. Finisher System Configuration

Overview of the finisher's 6 main units and their functions.

2.2.11.2. Layout and Paper path

Diagram showing the cross-sectional view and paper path within the finisher.

2.2.11.3. Electrical parts location

Diagrams showing the location of electrical parts like sensors and motors in the finisher.

2.2.11.4. Finisher main board

Diagram and connection information for the finisher's main board.

2.2.12. Mail box Unit Description

Description of the mailbox unit, its layout, electrical parts, and main board.

2.2.12.1. Mail box layout

Diagram showing the cross-sectional view of the mailbox and its numbered components.

2.2.12.2. Electrical parts location

Diagrams showing the location of electrical parts like sensors and motors in the mailbox.

2.2.12.3. Mail box main board

Diagram and connection information for the mailbox's main board.

Disassembly and Reassembly

3.1. Precautions for Parts Replacement

Essential precautions for handling parts, PBAs, screws, and for safe disassembly/assembly.

3.1.1. Precautions when assembling and disassembling

Guidelines for safely disassembling and assembling the printer, noting screw types and parts.

3.1.2. Precautions when handling PBA

Precautions for handling Printed Circuit Board Assemblies (PBAs) to prevent damage.

3.1.3. Releasing Plastic Latches

Instructions on how to carefully release parts held by plastic latches.

3.2. Printer Screw Guide

A comprehensive list of screws used in the printer, detailing part code, location, and quantity.

3.3. Replacing Maintenance Parts

Step-by-step instructions for replacing the fuser unit, including safety cautions.

3.3.1. Fuser Unit Replacement

Step-by-step instructions for replacing the fuser unit, including safety cautions.

3.3.2. Pickup and Forward Roller Replacement

Procedure for removing the pick-up and forward rollers.

3.3.3. Transfer Roller Replacement

Procedure for removing the transfer roller after opening the front cover.

3.4. Replacing Main Service Parts

Step-by-step guide to removing the printer covers for accessing internal components.

3.4.1. Cover Removal

Step-by-step guide to removing the printer covers for accessing internal components.

3.4.2. Main Board Replacement

Procedure for removing and replacing the main board.

3.4.4. SMPS and FDB Board Replacement

Procedure for removing the SMPS and FDB boards.

3.4.8. HVPS Board Replacement

Procedure for removing the HVPS board.

3.4.10. LSU Replacement

Procedure for removing the Laser Scanning Unit (LSU).

3.4.13. Pick-up Assembly Disassembly

Step-by-step guide to disassembling the pick-up assembly, including its sub-parts.

3.5. Finisher Disassembly

Procedure for removing the finisher covers and staple cartridge.

3.5.1. Finisher Cover Removal

Procedure for removing the finisher covers and staple cartridge.

3.5.2. Stapler Assembly Removal

Instructions for removing the stapler assembly.

3.5.4. Tamper Assembly Removal

Instructions for removing the tamper assembly and related sensors/motors.

3.6. Mail Box Disassembly

Step-by-step guide to disassembling the mailbox unit.

Alignment and Troubleshooting

4.1. Alignment and Adjustment

Describes functions for service, maintenance methods, and test outputs.

4.1.1. Control Panel Operations

Overview of the printer's control panel buttons and their functions for different models.

4.1.2. Status LED Indicators

Explanation of the meaning of different LED colors and patterns to indicate machine status.

4.1.3. JAM Removal Procedures

Detailed instructions for removing paper jams from various locations in the printer.

4.1.3.1. Paper Jam Removal: Tray 1

Procedure for clearing paper jams from Tray 1.

4.1.3.2. Paper Jam Removal: Optional Tray

Procedure for clearing paper jams from optional trays.

4.1.3.4. Paper Jam Removal: Inside Machine

Steps for removing paper jams located inside the printer, with cautions for the imaging unit.

4.1.3.6. Paper Jam Removal: Front of Finisher

Steps to clear paper jams located in front of the finisher.

4.1.3.7. Paper Jam Removal: Inside Finisher

Procedure for clearing paper jams located inside the finisher.

4.1.3.9. Paper Jam Removal: Front of Mailbox

Procedure for clearing paper jams in front of the multi-bin mailbox.

4.1.3.10. Paper Jam Removal: Inside Mailbox

Steps to clear paper jams located inside the multi-bin mailbox.

4.1.4. Service Menu Items

Information on accessing menu items for monitoring supplies and setting toner low alerts.

4.1.5. Periodic Defective Image Troubleshooting

Guide to identifying and resolving image defects caused by faulty or damaged rollers.

4.1.6. Management Tools Usage

Instructions for using Samsung Easy Printer Manager and Samsung Printer Status.

4.1.6.1. Samsung Easy Printer Manager

Guide to using the Easy Printer Manager application for managing printer settings.

4.1.6.2. Samsung Printer Status

Instructions for using the Samsung Printer Status application to monitor machine status.

4.1.6.3. Smart Panel Usage

Guide to using the Smart Panel application for monitoring and customizing settings.

4.1.7. Firmware Update Procedures

Instructions for updating the printer firmware using USB or network methods.

4.1.7.1. Update via USB Port

Step-by-step guide for updating printer firmware via a USB connection.

4.1.7.2. Update via Network

Instructions for updating printer firmware using the network via web browser.

4.1.8. Tech Mode Operations

Information on entering and using the printer's service (Tech) mode.

4.1.8.1. Entering Tech Mode

Steps to enter the Tech Mode for ML-451x/5010/5012 and ML-5015/5017 series.

4.1.8.2. Tech Mode Menu Overview

Overview of the Tech Mode menu structure for different printer models.

4.1.8.3. Tech Mode Menu Descriptions

Detailed descriptions of the functions and options available within the Tech Mode menu.

4.2. Troubleshooting Common Errors

A comprehensive list of error codes, messages, and corresponding troubleshooting pages.

4.2.1. Symptom Checking Procedure

Flowchart for diagnosing printer issues starting from power on and print quality checks.

4.2.1.1. Basic Check List

A checklist of basic steps to perform when troubleshooting printer problems.

4.2.2. Error Code Troubleshooting

A comprehensive list of error codes, messages, and corresponding troubleshooting pages.

4.2.3. Image Quality Problems

Guide to identifying and resolving various image quality issues like lines, bands, and spots.

Vertical Black Line and Band

Description and solutions for vertical black lines or bands in the printed image.

Vertical White Line

Description and solutions for white vertical lines or voids in the printed image.

Horizontal Black Band

Description and solutions for horizontal black bands or stripes in the printing.

Black and White Spots

Description and solutions for dark or blurry black spots in the printing.

Light Image

Description and solutions for a light printed image with no ghost.

Dark or Black Page

Description and solutions for a dark or completely black printed page.

Uneven Density

Description and solutions for uneven print density between the left and right sides.

Background

Description and solutions for light dark background appearing in the entire print area.

Ghost

Description and solutions for ghosting occurring at specific intervals in the printing.

Stains on back of page

Description and solutions for stains appearing on the back of the printed page.

Blank page

Description and solutions for a blank printed page.

Partial image void

Description and solutions for partial image voids in the printed page.

4.2.4. Other Errors

Troubleshooting for common errors like multi-feeding and no power.

Multi-Feeding Troubleshooting

Troubleshooting for the error where multiple sheets of paper are fed at once.

No Power Troubleshooting

Troubleshooting steps when no lamps on the operator panel illuminate upon power-on.

System Diagrams

5.1. Block Diagram

A block diagram illustrating the main controller and its connected units and interfaces.

5.2. Connection Diagram 1

Detailed connection diagram showing interconnections between the main board and various components.

5.3. Connection Diagram 2

Detailed connection diagram showing interconnections between the main board and various components.

5.4. Connection Diagram 3

Detailed connection diagram illustrating SMPS, FDB, and fan connections.

5.5. Connection Diagram 4

Detailed connection diagram showing main board connections to USB, JTAG, and other modules.

Reference Information

6.1. Tool for Troubleshooting

List of recommended tools for safe and easy troubleshooting of the printer.

6.2. Glossary

Glossary of common printing and networking terminologies used in the manual.

6.3. Sample Test Pattern

Sample test pattern used for measuring toner cartridge life and printing speed.

6.4. Selecting a Location

Guidelines for selecting an appropriate and safe location for installing the printer.

6.5. Document Revision List

List of document revisions, including version, date, page, and description of changes.

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