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Brother DCP-L2531DW User Manual

Brother DCP-L2531DW
340 pages
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Confidential
Read this manual thoroughly before maintenance work.
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August 2017
SM-FAX186
8C5K*
Ver.4
Brother Laser MFC
SERVICE MANUAL
DCP-7090/7095D/7190DN/7195DW
DCP-B7500D/B7520DW/B7530DN/B7535DW
DCP-L2510D/L2511D/L2512D/L2530DW
DCP-L2531DW/L2532DW/L2535D/L2535DW
DCP-L2536D/L2537DW/L2550DN/L2550DW
DCP-L2551DN/L2551DW/L2552DN
HL-L2390DW/L2395DW
MFC-7390/7490D/7890DN/7895DW
MFC-B7700D/B7715DW/B7720DN
MFC-L2690DW/L2710DN/L2710DW/L2712DN
MFC-L2712DW/L2713DW/L2715D/L2715DW
MFC-L2716D/L2716DW/L2717DW
MFC-L2730DW/L2732DW/L2750DW/L2750DWXL
MFC-L2751DW/L2752DW/L2770DW/L2771DW
MODEL

Table of Contents

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Brother DCP-L2531DW Specifications

General IconGeneral
Print TechnologyLaser
FunctionsPrint, Copy, Scan
Paper Input Capacity250 sheets
Automatic Duplex PrintingYes
Mobile PrintingBrother iPrint&Scan, AirPrint, Google Cloud Print
Scanner TypeFlatbed
Copy ResolutionUp to 600 x 600 dpi
Dimensions410 x 398.5 x 272 mm
Print SpeedUp to 30 ppm
Print Resolution2400 x 600 dpi
ConnectivityUSB 2.0, Wi-Fi
Display2-line LCD
Scan Resolution1200 x 1200 dpi
Copy SpeedUp to 30 cpm

Summary

SAFETY INFORMATION

Definitions of Warnings, Cautions, and Notes and Memos

Explains conventions used for warnings, cautions, and notes in the manual.

Machine Safety Guidelines

Provides essential instructions for safe operation and maintenance of the machine.

Power Cord Safety Precautions

Details safety measures related to the power cord to prevent hazards.

Laser Product Caution

Warns about handling the laser unit and potential eye damage from laser beams.

Standard Telephone and FCC Notices

Provides regulatory notices for MFC models sold in the United States.

CHAPTER 1 SUPPLEMENTAL SPECIFICATIONS

1. GENERAL Model Comparison

Compares model features, specifications, and capabilities in a comparative table.

2. NETWORK CONNECTIVITY

Details network interface types and node types supported by different models.

3. SERVICE INFORMATION

Provides machine life, part life, MTBF, MTTR, and maintenance parts lifespan.

4. SUPPLIES

Lists toner cartridge and drum unit specifications, including page yields and shelf life.

5. MEDIA SPECIFICATIONS

Specifies media types, paper input, weight, and size supported by ADF.

6. FAX Functionality

Details modem speed, transmission speed, ITU-T group, and fax capabilities.

7. COPY Functionality

Outlines copy speed, first copy out time, print resolution, and auto duplex scanning.

8. SCANNER Specifications

Details scanner resolution (optical/interpolated) and scanning speed for various models.

CHAPTER 2 ERROR INDICATIONS AND TROUBLESHOOTING

1. INTRODUCTION to Troubleshooting

Introduces troubleshooting procedures and aims to help pinpoint issues.

1.1 Precautions for Troubleshooting

Outlines essential safety precautions to prevent secondary problems during maintenance.

1.2 Pre-Troubleshooting Checks

Lists checks for operating environment, power supply, paper, and consumables before repair.

2. OVERVIEW of Machine Components

Provides cross-section drawings and identifies key parts of the printer and scanner.

3. ERROR INDICATIONS and Troubleshooting

Explains how the machine indicates errors and guides troubleshooting steps for various issues.

3.1 Error Codes Listing

Lists error codes, their descriptions, and references for further troubleshooting.

3.2 Error Messages on LCD

Details error messages displayed on the LCD for touch panel and non-touch panel models.

3.3 Communication Errors

Lists communication error codes and their causes, with references for solutions.

4. TROUBLESHOOTING Procedures

Provides detailed steps for diagnosing and resolving common machine problems.

4.1 Error Cause and Remedy

Lists specific error codes, their causes, and recommended remedies or part replacements.

4.2 Paper Feeding Troubleshooting

Addresses common paper feeding issues like jams, misfeeds, and wrinkles with step-by-step remedies.

4.3 Image Defect Troubleshooting

Helps identify and resolve image quality issues such as light prints, streaks, and fogging.

4.4 Software Problem Troubleshooting

Guides users through resolving issues related to computer connections and driver problems.

4.5 Network Problem Troubleshooting

Provides solutions for issues like inability to print via network or connect to access points.

4.6 Control Panel Problem Troubleshooting

Addresses issues where the LCD or LED displays are not working, or panel operations fail.

4.7 Toner Cartridge and Drum Unit Problems

Troubleshoots issues related to toner detection, replacement messages, and drum errors.

4.8 Fuser Unit Problems Troubleshooting

Guides on diagnosing and resolving fuser unit failures and related errors.

4.9 Laser Unit Problems Troubleshooting

Provides steps for troubleshooting laser unit failures and related issues.

4.10 PCB Problems Troubleshooting

Addresses issues related to Main PCB and memory failures, offering specific solutions.

4.11 Document Feeding Problems Troubleshooting

Solves problems like no document feed, multiple documents fed, or document jams in the ADF.

4.12 Scanning Image Defect Troubleshooting

Helps diagnose and fix image defects that occur during the scanning process.

4.13 FAX/Phone Problems Troubleshooting

Addresses issues related to fax transmission, reception, communication errors, and buffer problems.

4.14 Other Problems Troubleshooting

Covers general troubleshooting for issues like inability to print, firmware updates, or tray recognition.

CHAPTER 3 DISASSEMBLY/REASSEMBLY

1. SAFETY PRECAUTIONS for Maintenance

Emphasizes critical safety measures and warnings before performing disassembly.

2. PACKING Procedures

Details how to pack the machine components, including carton and protective materials.

3. SCREW CATALOGUE

Illustrates and identifies various types of screws used in the machine for easy reference.

4. SCREW TORQUE LIST

Provides a table listing screw locations, types, quantities, and recommended tightening torques.

5. LUBRICATION Points

Specifies lubricating oil types, points, and quantities for proper machine maintenance.

6. OVERVIEW OF GEARS

Shows diagrams and names of various gears within the machine's drive system.

7. HARNESS ROUTING Diagrams

Illustrates the routing paths for various internal harnesses and cables within the machine.

8. DISASSEMBLY FLOW CHART

Provides a visual flow chart outlining the sequence of disassembly and reassembly steps.

9. DISASSEMBLY PROCEDURE

Step-by-step instructions for disassembling various parts of the machine.

9.1 Preparation for Disassembly

Covers essential preparation steps, including transferring FAX data and disconnecting cables.

9.1.1 Disconnecting Cables and Removing Accessories

Details the initial steps of disconnecting cables and removing external accessories.

9.2 Cord hook Removal

Details the procedure for removing the cord hook from the machine's exterior.

9.3 Back cover Removal

Step-by-step guide to safely remove the back cover of the machine.

9.4 Outer chute ASSY Removal

Instructions for detaching and removing the outer chute assembly.

9.5 Front cover ASSY / Support flap Removal

Explains how to remove the front cover and its support flap for access.

9.6 Side cover R Removal

Provides instructions for removing the right side cover of the machine.

9.7 Fuser cover Removal

Details the steps to remove the fuser cover, revealing the fuser unit.

9.8 Inner chute ASSY Removal

Instructions for detaching and removing the inner chute assembly.

9.9 Side cover L / Speaker harness ASSY / Handset holder ASSY Removal

Guide to removing the left side cover and associated harnesses/holders.

9.10 Document scanner unit Removal

Step-by-step instructions for removing the document scanner unit.

9.11 ADF unit Removal (For models with ADF)

Explains how to remove the Automatic Document Feeder unit and its components.

9.11.1 ADF unit Disassembly

Details the removal of the ADF unit itself and related cables.

9.11.2 ADF cover ASSY / Document stopper Removal

Instructions for removing the ADF cover and document stopper.

9.11.3 Document sub tray Removal

Steps to detach and remove the document sub tray from the ADF unit.

9.11.4 Document separate roller ASSY Removal

Guide to removing the document separate roller assembly.

9.11.5 ADF separation holder ASSY Removal

Instructions for removing the ADF separation holder assembly.

9.11.6 Second side CIS unit / Second side CIS flat cable Removal

Details removing the second side CIS unit and its flat cable for duplex scanning models.

9.12 Document cover ASSY Removal (For models without ADF)

Instructions for removing the document cover assembly on models without an ADF.

9.13 Panel unit Removal (For Touch panel models)

Step-by-step guide to remove the panel unit on touch panel models.

9.13.1 Panel unit Disassembly

Details the removal of the panel unit and its connection to the PCB.

9.13.2 Panel PCB ASSY / NFC PCB ASSY / LCD Removal

Instructions for removing the panel PCB, NFC PCB, and LCD components.

9.13.3 Touch panel ASSY Removal

Steps to detach and remove the touch panel assembly.

9.14 Panel unit Removal (For Non-touch panel models)

Guide to removing the panel unit on non-touch panel models.

9.14.1 Panel unit Disassembly

Details the removal of the panel unit and its connection to the PCB.

9.14.2 Panel PCB ASSY Removal

Instructions for removing the panel PCB assembly.

9.14.3 LCD Removal

Steps to detach and remove the LCD screen from the panel unit.

9.15 Panel flat cable / First side CIS unit / First side CIS flat cable Removal

Details removing the panel flat cable and first side CIS unit components.

9.16 Modem flat cable / Modem PCB ASSY Removal

Instructions for removing the modem flat cable and PCB assembly.

9.17 Joint cover ASSY Removal

Step-by-step guide to remove the joint cover assembly.

9.18 Fuser unit Removal

Details the procedure for removing the fuser unit and its associated harnesses.

9.19 Low-voltage power supply PCB ASSY Removal

Instructions for removing the low-voltage power supply PCB assembly, including safety warnings.

9.20 New toner sensor PCB ASSY Removal

Steps to detach and remove the new toner sensor PCB assembly.

9.21 HVPS flat cable / High-voltage power supply PCB ASSY Removal

Guide to removing the HVPS flat cable and high-voltage power supply PCB.

9.22 Fan Removal

Instructions for removing the cooling fan and its harness.

9.23 Toner box relay PCB ASSY / MP relay PCB ASSY / Toner box new PCB ASSY Removal

Details removing toner box and MP relay PCBs and associated harnesses.

9.24 Laser unit flat cable / Laser unit Removal

Step-by-step guide to remove the laser unit and its flat cable.

9.25 Filter Removal

Instructions for removing the filter from the air duct.

9.26 Wireless LAN PCB Removal (Only for wireless network models)

Details removing the wireless LAN PCB, applicable for wireless network models.

9.27 Roller holder ASSY Removal

Steps to detach and remove the roller holder assembly.

9.28 Main PCB ASSY Removal

Instructions for removing the main printed circuit board assembly.

9.29 T1 clutch / Registration clutch Removal

Guide to removing the T1 clutch and registration clutch components.

9.30 Frame L unit Removal

Details the procedure for removing the Frame L unit, including manual feed and MP models.

9.31 Paper feed motor / Paper feed motor flat cable Removal

Instructions for removing the paper feed motor and its flat cable.

9.32 Fuser gear 64R/36R Removal

Steps to detach and remove the fuser gear.

9.33 Toner sensor PCB ASSY Removal (Only for models with Toner box)

Details removing the toner sensor PCB assembly on models with a toner box.

9.34 Front cover sensor Removal

Instructions for removing the front cover sensor.

9.35 Eject sensor PCB ASSY Removal

Steps to detach and remove the eject sensor PCB assembly.

9.36 Registration front/rear actuator holder ASSY Removal

Guide to removing the registration front/rear actuator holder assembly.

9.37 Paper feed roller ASSY / Paper feed sensor PCB ASSY Removal

Details removing the paper feed roller and sensor PCB assemblies.

CHAPTER 4 ADJUSTING AND UPDATING SETTINGS AS REQUIRED AFTER PARTS REPLACEMENT

1. IF YOU REPLACE THE MAIN PCB ASSY

Procedures for after replacing the main PCB, including firmware and settings.

What to do after replacement

Lists the essential tasks to perform after replacing the main PCB assembly.

What you need to prepare

Outlines the necessary tools and files for the replacement procedure.

1.1 Installing Firmware (Sub firmware and main firmware)

Step-by-step guide for installing sub and main firmware onto the machine.

1.1.1 Checking firmware version

Instructions on how to check the current firmware version installed on the machine.

1.2 Initializing the EEPROM of the Main PCB ASSY (Function code 01)

Procedure to initialize the EEPROM parameters of the main PCB using a specific function code.

1.3 Setting by Spec, Setting Serial Number and Entering Adjusted Value of Laser Unit

Guides on setting model specifications, serial numbers, and laser unit adjustments.

1.4 Adjusting Touch Panel (Function code 61) (Touch panel models only)

Instructions for calibrating the touch panel on touch panel model machines.

1.5 Acquiring White Level Data (Function code 55)

Details on obtaining white level data for CIS units and setting scan areas.

2. IF YOU REPLACE THE LOW-VOLTAGE POWER SUPPLY PCB ASSY

Procedure for actions required after replacing the low-voltage power supply PCB.

3. IF YOU REPLACE THE LASER UNIT

Steps to follow after replacing the laser unit, including entering adjusted values.

4. IF YOU REPLACE THE PANEL UNIT OR PANEL CONTROL PCB

Procedures for actions after replacing panel unit or control PCB components.

5. IF YOU REPLACE THE ADF UNIT, FIRST SIDE CIS UNIT, SECOND SIDE CIS UNIT OR DOCUMENT SCANNER UNIT

Steps to perform after replacing ADF, CIS, or document scanner units.

CHAPTER 5 SERVICE FUNCTIONS

1. FUNCTION CODE Overview

Introduces maintenance mode functions for checking, setting, and adjusting the machine.

1.1 How to Enter Maintenance Mode

Explains methods to access the machine's maintenance mode for service personnel.

1.1.1 Method for Service Personnel

Provides specific key sequences for service personnel to enter maintenance mode.

1.1.2 Method for End-User Accessible Maintenance Mode

Outlines procedures for end users to access specific maintenance functions under guidance.

1.2 List of Maintenance Mode Functions

A comprehensive list of available maintenance mode functions with corresponding codes and references.

1.3 Details of Maintenance Mode Functions

Provides detailed explanations and operating procedures for various maintenance mode functions.

1.3.1 Initialize EEPROM parameters (Function code 01, 91)

Function to initialize EEPROM settings for operation parameters and user switches.

1.3.2 Transition to shipping state (Function code 03)

Function to reset the machine to its factory shipping state for repair or resale.

1.3.3 ADF performance test (Function code 08)

Tests the performance of the automatic document feeder by counting scanned pages.

1.3.4 Print quality test pattern (Function code 09)

Prints test patterns to check for image quality issues like missing images or flaws.

1.3.5 Set worker switches (WSW) (Function code 10)

Allows setting various operational parameters via worker switches using the control panel.

1.3.5 Print worker switch setting data (Function code 11)

Prints the current settings of worker switches for reference and documentation.

1.3.6 Check LCD operation (Function code 12)

Verifies the functionality and display of the control panel's LCD screen.

1.3.7 Check control panel key operation (Function code 13)

Tests the responsiveness and correct operation of each key on the control panel.

1.3.8 Display software version (Function code 25)

Shows the version information for the machine's firmwares and programs.

1.3.9 Check sensor operation (Function code 32)

Verifies the operational status of various sensors, solenoids, and clutches in the machine.

1.3.10 Display LAN connection status (Function code 33)

Checks and displays the connection status of the wired LAN interface.

1.3.11 Set PC print functions (Function code 43)

Allows modification of various print settings that are controlled via the computer.

1.3.12 Adjust Print Position and Settings (Function code 45)

Adjusts USB return values, print positions, and ON/OFF settings for specific functionalities.

1.3.13 Adjust Printable Range by Speed Level (Function code 46)

Fine-tunes the printing position in horizontal and vertical directions based on speed levels.

1.3.14 Transfer Received Fax Data / Log Information (Function code 53)

Transfers received fax data, communication reports, or machine log information to another machine.

1.3.15 Fine-tune Scanning Position (Function code 54)

Adjusts the start and end positions of the scanning process for better alignment.

1.3.16 Acquire White Level Data and Set CIS Scan Area (Function code 55)

Acquires white level data for CIS units and stores it along with scan area information.

1.3.17 Check Toner Cartridge (Function code 57)

Verifies toner cartridge compatibility, country code, and version information.

1.3.18 Adjust Touch Panel (Function code 61)

Calibrates the touch panel to ensure accurate input response.

1.3.19 Continuous Print Test (Function code 67)

Conducts paper feed and eject tests using various print patterns.

1.3.20 Print Frame Pattern (Single-side Printing) (Function code 69)

Prints a frame pattern on one side of the paper to check for printing flaws.

1.3.21 Print Frame Pattern (Duplex Printing) (Function code 70)

Prints a frame pattern on both sides of the paper to check for printing flaws.

1.3.22 Test Pattern (Function code 71)

Prints test patterns to check the condition of the develop roller or exposure drum.

1.3.23 Configure Country/Region and Model (Function code 74)

Customizes machine settings for language, functions, and worker switches based on region.

1.3.24 Print Maintenance Information (Function code 77)

Prints machine maintenance data, including consumable levels and replacement counts.

1.3.25 Check Fan Operation (Function code 78)

Tests the fan operation at different speeds (100%, 50%, OFF).

1.3.26 Delete Fax Data (Function code 79)

Clears fax data stored in the machine's memory.

1.3.27 Display Machine Log Information (Function code 80)

Displays various machine logs, including error history, serial numbers, and page counts.

1.3.28 Display Machine Error Code (Function code 82)

Shows the latest error code that has occurred on the machine's LCD.

1.3.29 Send Communication Log Information (Function code 87)

Transmits error lists to a remote service station for remote analysis.

1.3.30 Reset Irregular Power Supply Detection Counter (Function code 88)

Resets the detection counter for irregular power supply after replacing the PCB.

1.3.31 Quit Maintenance Mode (Function code 99)

Exits maintenance mode, restarts the machine, and returns it to the ready state.

2. OTHER SERVICE FUNCTIONS

Provides access to additional service functions like drum cleaning and error list printing.

2.1 Drum Cleaning

Procedure to clean the drum unit using a special cleaning sheet kit.

2.2 Print Communication Error List

Prints the communication error list, also known as the Communication List.

2.3 Resetting Drum Counter

Resets the drum counter after replacing the drum unit.

CHAPTER 6 WIRING DIAGRAM

1. WIRING DIAGRAM

Illustrates the electrical connections and component interdependencies within the machine.

CHAPTER 7 PERIODICAL MAINTENANCE

1. PERIODICAL REPLACEMENT PARTS

Lists parts that require periodic replacement as part of routine maintenance.

APPENDIX 1 SERIAL NUMBERING SYSTEM

Serial Number Label Information

Explains the format and location of serial number labels on the printer for identification.

APPENDIX 2 DELETING USER SETTING INFORMATION

Operating Procedure for Deleting User Settings

Guides on how to reset machine settings to default values via the control panel.

APPENDIX 3 INSTALLING THE MAINTENANCE PRINTER DRIVER

Installing the Maintenance Printer Driver for Windows

Provides instructions for installing the necessary driver for machine identification via USB.

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