Brother Dcp L8400cdn L8450cdw Mfc L8600cdw L8650cdw L8850cdw L9550cdw Service Manual

Brother Color Laser MFC SERVICE MANUAL

MODEL: DCP-L8400CDN/L8450CDW MFC-L8600CDW/L8650CDW MFC-L8850CDW/L9550CDW

Read this manual thoroughly before maintenance work.

Keep this manual in a convenient place for quick and easy reference at all times.

March 2014 SM-FAX157 8CE5* (7)

TRADEMARKS

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Intel is trademark of Intel Corporation in the U.S. and/or other countries.

Adobe, Illustrator, PostScript, and PostScript 3 are either registered trademarks or trademarks of Adobe Systems Incorporated in the United States and/or other countries.

Wi-Fi, Wi-Fi Alliance and Wi-Fi Protected Access are registered trademarks of the Wi-Fi Alliance.

WPA, WPA2, Wi-Fi Protected Setup log and Wi-Fi Direct are trademarks of the Wi-Fi Alliance.

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Any trade names and product names of companies appearing on Brother products, related documents and any other materials are all trademarks or registered trademarks of those respective companies.

OPEN SOURCE LICENSING REMARKS

This product includes open-source software.

Please visit the Brother Solutions Center at http://solutions.brother.com/ to view the Open Source Licensing Remarks and Copyright information.

COPYRIGHT AND LICENSE

©2014 Brother Industries, Ltd. All rights reserved.

This product includes software developed by the following vendors:

©1983-1998 PACIFIC SOFTWORKS, INC. ALL RIGHTS RESERVED.

©2008 Devicescape Software, Inc. All rights reserved.

This product includes the 'KASAGO TCP/IP' software developed by ZUKEN ELMIC, Inc.

OTHER INFORMATION

FlashFX ® is a registered trademark of Datalight, Inc.

FlashFX ® Copyright 1998-2010 Datalight, Inc.

U.S.Patent Office 5,860,082/6,260,156

FlashFX ® Pro™ is a trademark of Datalight, Inc.

Reliance™ is a trademark of Datalight, Inc.

Datalight ® is a registered trademark of Datalight, Inc.

Copyright 1989-2010 Datalight, Inc., All Rights Reserved

CONTENTS

Table Caption: This table of contents outlines a user manual for a printer, covering supplemental specifications and detailed troubleshooting information, including error indications and procedures. It is organized into two main chapters: Chapter 1 for supplemental specifications and Chapter 2 for error indications and troubleshooting.

Table Caption: This table outlines troubleshooting steps for various printer issues, categorized by problem type, including communications, paper feeding, image defects, software, network, control panel, toner/drum, fuser, laser unit, PCB, and document feeding. Each entry provides a specific problem and its corresponding page number for detailed resolution.

Table Caption: This table lists troubleshooting steps and procedures for a device, organized by function and problem type, followed by disassembly and assembly instructions including safety precautions, part details, and step-by-step procedures.

Table Caption: This table lists parts and assemblies with corresponding page numbers, likely from a service or parts manual for an electronic device.

Table Caption: This table appears to be a table of contents or an index listing various parts and components of a machine, likely a printer or copier, along with their corresponding page numbers for disassembly or maintenance procedures. The items are organized numerically from 9.43 to 10.6.

CHAPTER 4 ADJUSTMENTS AND UPDATING OF SETTINGS, REQUIRED AFTER PARTS REPLACEMENT

Table Caption: This table outlines procedures and function codes for replacing various components in a machine, detailing necessary firmware installations, initializations, adjustments, and checks after each replacement.

Table Caption: This table details service procedures for replacing components like the laser unit, CIS units, and fuser unit, along with instructions for entering and utilizing maintenance mode functions for diagnostics and adjustments. It also lists various maintenance-mode functions, their corresponding function codes, and the page numbers where their descriptions can be found.

Table Caption: This table lists various service functions for a device, categorized by their section number, description, and corresponding function code, along with the page number where more details can be found.

Table Caption: This table of contents outlines Chapter 6, which covers wiring diagrams, and Chapter 7, which details periodical maintenance procedures including safety precautions and the replacement of specific parts like the fuser unit, laser unit, and various PF kits. Appendices are also listed for serial numbering systems and deletion of user setting information.

SAFETY INFORMATION

 Definitions of Warnings, Cautions, Notes and Memos

The following conventions are used in this manual:

**Table Caption: This table defines