Brother mfc-9420cn Service Manual
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Also See for mfc-9420cn:
- Service manual (428 pages) ,
- User manual (195 pages) ,
- Software user's manual (145 pages)
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Summary of Contents for Brother mfc-9420cn
- Page 1 FACSIMILE EQUIPMENT SERVICE MANUAL MODELS: MFC-9420CN Confidential...
- Page 2 PREFACE This Service Manual is intended for use by service personnel and details the specifications, construction, theory of operation, and maintenance for the Brother machines noted on the front cover. It includes information required for troubleshooting and service--disassembly, reassembly, and lubrication--so that service personnel will be able to understand equipment function, repair the equipment in a timely manner and order spare parts as necessary.
- Page 3 When installing the printer driver, the installer logs events that occur during the installation process in the event log file. This appendix views a sample of the event log file. Selecting Start | Program | Brother | MFL-Pro Suite model name | Installation Diagnostics reads out the event log file.
- Page 4 TABLE OF CONTENTS CHAPTER 1 PARTS NAMES & FUNCTIONS EQUIPMENT OUTLINE.....................1-1 CONTROL PANEL ....................1-2 COMPONENTS ......................1-4 CHAPTER 2 SPECIFICATIONS GENERAL........................2-1 2.1.1 General Specifications ..................2-1 2.1.2 Paper Specifications.....................2-2 2.1.3 Printable Area ........................ 2-3 SPECIFICATIONS LIST ....................2-4 CHAPTER 3 THEORY OF OPERATION OVERVIEW........................3-1 PRINTER SECTION ....................3-2 3.2.1...
- Page 5 CHAPTER 4 TRANSFER OF DATA LEFT IN THE MACHINE TO BE SENT FOR REPAIR TRANSFERRING RECEIVED FAX DATA ..............4-1 CHAPTER 5 DISASSEMBLY/REASSEMBLY AND LUBRICATION DISASSEMBLY/REASSEMBLY ................5-1 Safety Precautions ......................5-1 Tightening Torque......................5-2 Preparation ........................5-3 How to Access the Object Component .................5-3 Disassembly Flowchart ....................5-4 5.1.1 AC Cord........................5-5...
- Page 6 5.1.23 Waste Toner Auger PU ..................5-42 5.1.24 Waste Toner Agitator PU ...................5-42 5.1.25 Erase Lamp PU ....................5-43 5.1.26 Marker Sensor....................5-44 5.1.27 Toner Density Sensor PU...................5-44 5.1.28 Cleaning Roller Clutch PU..................5-45 5.1.29 Main Motor PU ....................5-45 5.1.30 Fuser Clutch PU ....................5-46 5.1.31 TR Cam Clutch....................5-47 5.1.32 Registration Clutch PU ..................5-47 5.1.33 Paper Feed Clutch PU ..................5-48...
- Page 7 5.1.54 Toner Sensor PU (TTR) ..................5-64 5.1.55 Toner Present Sensor PU ..................5-65 5.1.56 Belt Sensor......................5-65 5.1.57 Left Tray Guide PU / Paper Size Sensor PU / Room Temp Thermistor PU ..5-66 5.1.58 Left Toner Guide PU ..................5-67 5.1.59 Paper Exit Unit ....................5-68 5.1.60 Transfer Roller ASSY PU ...................5-69 5.1.61 Transfer Base ASSY PU ..................5-69 5.1.62 Registration Roller ASSY PU ................5-70...
- Page 8 6.1.4 CIS Scanner Area Setting ..................6-2 6.1.5 Setting Which Allows the User to Select the Country...........6-2 IF YOU REPLACE THE ENGINE CONTROL BOARD PU........6-4 ADJUSTMENT OF THE GUIDE B POSITION OF TOP FUSE COVER FU .....6-5 PERIODIC MAINTENANCE PROCEDURES............6-6 6.4.1 Replacement of OPC Belt Cartridge ..............6-6 6.4.2 Replacement of Fusing Unit................6-10...
- Page 9 8.1.4.9 Sensor Operational Check (Function mode 32).........8-14 8.1.4.10 EEPROM Customizing (Entering of the country code for Europe/Oceania.) (Function mode 52)..................8-15 8.1.4.11 Received Data Transfer Function (Function mode 53) ......8-16 8.1.4.12 Fine Adjustment of Scan Start/End Positions (Function mode 54) ....8-18 8.1.4.13 Acquisition of White Level Data and CIS Scanner Area Setting (Function mode 55) ..................8-20 8.1.4.14 Paper Feeding and Ejecting Test (Function mode 67) ......8-20...
- Page 10 [ 4 ] NVRAM Initial (Code 46)................8-45 [ 5 ] Total Page Set (Code 47) ................8-45 [ 6 ] Each Image Set (Code 48) ................8-46 [ 7 ] Next Life Set (Code 49) ................8-47 CHAPTER 9 ERROR INDICATION AND TROUBLESHOOTING ERROR INDICATION ....................9-1 9.1.1 Equipment Errors ....................9-1...
- Page 11 APPENDIX 5 WIRING DIAGRAM APPENDIX 6 CIRCUIT DIAGRAMS NCU PCB (U.S.A. model) NCU PCB (Europe, Oceania, Asia model) NCU PCB (Japanese model) POWER SUPPLY PCB 100V, 127V POWER SUPPLY PCB 240V APPENDIX 7 VIEWING THE EVENT LOG FILE Confidential...
- Page 12 FACSIMILE EQUIPMENT PARTS REFERENCE LIST MODEL: MFC9420CN...
- Page 13 Brother MFC-9420 service manual Brother MFC-9420 service manual Brother MFC-9420 service manual Brother MFC-9420 service manual Brother MFC-9420 service manual Brother MFC-9420 service manual Brother MFC-9420 service manual Brother MFC-9420 service manual Brother MFC-9420 service manual...