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Brother HL-820, HL-1020, HL-1040 manual Appendix 9. Main PCB Circuit Diagram, HL-1050, 3/5

Models: HL-1040 HL-820 HL-1020

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Troubleshooting Specification Install Error messages Alarm Lamp Faulty registration Safety Alert Symbol Extension Support Wire Warranty Maintenance

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Appendix 9. Main PCB Circuit Diagram, (HL-1050), (3/5)

CODE	UK4041000

NAME	B512001CIR

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Brother HL-820, HL-1020, HL-1040 manual Appendix 9. Main PCB Circuit Diagram, HL-1050, 3/5

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Contents

Page Page Preface Contents Chapter III Disassembly and Reassembly III-1 Chapter IV Maintenance and Troubleshooting High Resolution and Fast Printing Speed Versatile Paper HandlingEnvironment-Friendly Popular Printer Emulation Support for HL-1040/1050 only Enhanced Memory ManagementUSB Interface for HL-1050 only Optional Apple Macintosh Interface for HL-1040/1050 only Printing FunctionsCPU 820W or less Electrical and Mechanical Print Delivery Paper Loading Paper Effective Printing Area Printable area 228.6mm 304.8mm 203.2mm 296.3mm 12.7mm 12.0 11.66 Dots Monarch Laser Safety 110 120V Model only FDA Regulations 110 120V Model onlyManufacturedk Valid Chapter II Theory of Operation General Block Diagram HL-820/1020 HL-1040 Shows a general block diagram of the HL-1040 printer HL-1050 Shows a general block diagram of the HL-1050 printer Shows the block diagram of the main PCB Main PCB Block Diagram HL-820/1020 II-5 II-6 Main PCB CPU Core HL-820/1020/1040 HL-1050 NMI Asic HL-820/1020/1040Fifo Scanint Cdcc / Boise / Data Extension Eeprom I/O Page Cdcc USB One output port and one I/O port are assigned II-13 Page 3 ROM HL-820/1020/1040 Dram HL-820/1020/1040 Optional RAM HL-1050 Eeprom HL-820/1020/1040 Optional Serial I/O HL-1040/1050 Cdcc I/O HL-820/1020/1040 Reset Circuit HL-820/1020/1040 22 shows the Cdcc interface circuit II-20 23 shows the engine interface circuit II-21 Engine I/O HL-820/1020/1040 24 shows the engine interface circuit II-22 Paper Feed Motor Drive Circuit HL-820/1020/1040 Panel Sensor PCB Power Supply Low-voltage Power Supply GND Paper Sensor High-voltage Power Supply Overview of Printing Mechanism Mechanics Paper Registration Paper Transfer Paper Supply Paper Eject Toner Empty Sensor Sensors Cover Sensor Drum Unit Photosensitive Drum Cleaner RollerPrimary Charger Development Roller Exposure Stage Transfer Developing Drum Cleaning Stage Erasing StageFixing Stage TAPTITE, CUP S ScrewIII-1 Bottom III-2 Output Tray Assy Drum UnitIII-3 Top Cover Rear CoverIII-4 III-5 MP Sheet Feeder Assy III-6 Fixing Unit III-7 III-8 Scanner Unit III-9 Base Plate Assy Main PCB Assy Panel Sensor PCB Assy Low-voltage Power Supply PCB Assy High-voltage Power Supply PCB Assy Main Fan Motor Assy Sub Fan Motor Assy Drive Unit Sub Motor Assy Main Motor Assy Paper Support Extension Support Wire Packing Initial Check Chapter IV Maintenance and Troubleshooting Basic Procedure Toner Cartridge Periodical Replacement Parts Image Defect Examples Image Defects Light Troubleshooting Image Defects PCB Dark Completely blank All black Dirt on the back of paper Black and blurred horizontal stripes Black and blurred vertical streaks Faulty registration Black vertical streaks in a gray backgroundWhite vertical streaks Image distortion Poor fixing White spots Faint print Black spots Black band Hollow print Gray background Horizontal lines Downward fogging of solid black Ghost Light rain Location of High-voltage Contacts and Grounding Contacts Location of Feed Roller Shaft and Grounding Contacts Paper JAM No DC power supplied No AC power supplied No paper supplied Main motor unrotated Insufficient output from high-voltage power supply unit Fixing heater temperature failureBD failure Scanner failure Wrinkles Double feeding Lamp Type of inspection Incorporated Inspection ModesPage Service a Service B CPU Runtime Error Error CodesFuser Malfunction 3 0 0 0 0 a N B Appendix 2. Connection Diagram, HL-820/1020 Appendix 3. Connection Diagram, HL-1040 Appendix 4. Connection Diagram, HL-1050 Code Appendix 6. Main PCB Circuit Diagram, HL-820/1020/1040, 2/2 Appendix 7. Main PCB Circuit Diagram, HL-1050, 1/5 Appendix 8. Main PCB Circuit Diagram, HL-1050, 2/5 Appendix 9. Main PCB Circuit Diagram, HL-1050, 3/5 Appendix 10. Main PCB Circuit Diagram, HL-1050, 4/5 Appendix 11. Main PCB Circuit Diagram, HL-1050, 5/5 Appendix 12. Panel Sensor PCB Circuit Diagram PS Circuit Low-voltage 220 C17 D13 D12 C22 R18 C11 R10 Power Supply PCB Circuit Diagram Print Test Print or Print Configuration Appendix 18. HOW to Know Drum Unit Life & page Counter How to Read the Page Counter How to Read the Drum Life Appendix 19. Diameter / Circumference of Rollers Parts Reference List B48K056 201A REF.NO Code ’TY Description Symbol Remark Contents 11-1 11-2 11-5 11-4 3. Main PCB HL-1040 OTHERS/ISRAEL 5. Main PCB HL-1050 OTHERS/ISRAEL 12-2 12-3 12-4 12-1 Power Cords & Packing Drawing Drive Unit MP Sheet Feeder Covers Main PCB ASSY, HL-820 SP MROM1050-EVEN Panel Sensor PCB High Voltage Power Supply Accessories Packing Materials Model LT-24CL REF.NO Code ’TY Description Remark Contents Lower Tray Unit REF.NO. Code QTY Description Remark Model Feb., 1999 54S004BE0 Page Preface Product Outline Regulations For Finland and Sweden IEC 825 Specification for 220-240 V Model only Introductory Information Safety Alert Symbol Hazardous Voltage Hazardous Powder Hot Caution Label Laser Caution Label Label Location Product Outline Specifications Basic layout of printer set-up location Environmental conditions Unpacking Install the printer onto the lower tray unit Installation Procedures Check the three alignment guide pins on the lower tray unit Remove the set-up guides R/L from the unit Connect the LT signal connector into the printer Relocating the printer / Test print Install the covers Maintenance Disassembly Paper Sensor PEL / OHP Sensor Ohpl Paper Feeding Roller / Separation Pad Clearing Paper Jams PR98235 PR Driver Disk ASSY1, 820 Windows REF.NO Code QTY Description RemarkPR Driver Disk ASSY1, 1020 Windows PR Driver Disk ASSY1, 1040 Windows EL PCB Unit 24 UL8516001 1 Extension Support WireRubber Foot Chng 17 UL8508001 1 Insulation Sheet 16 UL8508001 1 Insulation Sheet Base PlateMylar LABEL, MFC-P2000 Canada Mini Clamp Fixing Units Code Qtydescription Symbol RemarkREF.NO Code Qtydescription Remark Fixing Unit Y, 120V SP UH3419001 1 Heat Roller YS Assy SP REF.NO Code QTY Description Symbol RemarkMain PCB Assy Conductive Tape Cleaner Legend CleanerMP Sheet Feeder Assy SP Fixing UNIT, 120V SP Fixing UNIT, LEG 230V SP CLEANER, LEGHeat ROLLER, LEG SP Main PCB ASSY, US SP CARTON, can HL-1020 CARTON, EUR HL-820CARTON, USA HL-1040 CARTON, can HL-1040 PR99057 Base Plate Quick Setup Guide If you have comments or suggestions, please write us at For USA & Canada Only Table of Contents Action 1 Check the Supplied Items Environment Power Supply Action 3 Install the Toner Cartridge/Drum Unit Action 4 Load Paper into Your Printer Paper Type Paper Size Secure the connection with the wire clips. ② Select Search for the best driver for your device Set the printer port to USB Select CD-ROM drive Troubleshooting Action 6 Plug in and Turn on Your Printer Printing a Test Sample For Windows 3.1/3.11 For Windows 95/98/NTPage Action 7-3 Prepare Windows 3.1 for the Printer HL-1040 HP LaserJet IIP What Does Remote Printer Console Do? Installing the Remote Printer Console Using the Remote Printer Console Main Program Using the Printer Status Monitor Program Only for HL-1040/1050 Users Action 7-5 Prepare Macintosh for the Printer Lamps and Switch Ready Paper LampData Toner Lamp Alarm Lamp SwitchDrum Lamp Sleep Mode Other Control Features Replacing the Toner Cartridge High Temperature Page Replacing the Drum Unit Do not remove the starter sheet Page Operator Calls Alarm Indications AT a Glance For HL-1040/1050 Service Calls Drum Alarm Ready DataDrum Alarm Ready Additional Memory HL-1050 Only Installing the Simm Printing Printer Specifications Electrical and Mechanical Functions Regulations Important For Your Safety Important Wiring Information For U.K. onlyGeräuschemission / Acoustic Noise Emission For Germany Only Void the Warranty Page HL-800/1000 Series Please read this manual thoroughly before using the printer Table of Contents Index To Use the Printer Safely Definitions of Warnings, Cautions, and Notes Shipment of the Printer Internet Address BBS About the Guidebooks Finding Out How to Use the Printer Printer Overview About Your Printer High Resolution and Fast Printing Speed HL-820 Features For HL-1040/1050 Only Popular Printer Emulation Support For HL-1040/1050 Only Remote Printer Console Program for DOS Enhanced Memory Management For HL-1050 Only USB Interface Low Running Cost Environment-Friendly Economy Printing Mode Operating and Storage Environment Page Paper Specifications Remarks Cut SheetLabels / Transparencies Fan the Paper Straighten the Paper Special Paper Envelopes Envelopes MULTI-PURPOSE Sheet Feeder Opening the Feeder Loading Paper or Envelopes in the Feeder Loading Paper into the Feeder Moving the Paper Guide Closing the Feeder Two Side Printing Manual Duplexing When you load one sheet of paper manually When you load more than one sheet of paper manuallyManual Feed Slot USER’S Guide Opening the Output Tray Extending the Extension Support Wire Output Tray and Paper Support Wire Chapter Control Panel Data Toner Lamp Error Recovery Cancel printingSleep Mode Wake-up Test Print Mode Lamp Lit Choice FunctionDrum Selecting the RS-422A Apple or RS-232C IBM Serial Interface Only Selecting the RS-422A Apple or RS-232C IBM Serial Interface Setting the Serial Interface Parameters Bit BitsDTR only Off Connecting the Serial Interface Cable NoneLocalTalk Options Minimum Memory Recommendation including resident memory Installing the Simm Removing the Main Controller Board Options Chapter Maintenance Removing the Drum Unit Turning the Lever to Close the Shutter Removing the Old Toner Cartridge Turn the drum unit upside down gently Cleaning the Primary Corona Wire 11 Drum Unit Nearly at the End of its Life 12 Removing the Drum Unit 14 Removing the Toner Cartridge Do not remove the starter sheet 17 Installing the Drum Unit Cleaning the Printer Exterior Cleaning the Printer 20 Turning off the Switch and Unplugging Cleaning the Printer Interior and Drum Unit Gently wipe the scanner window with a soft dry cloth See the section Replacing the Drum Unit in Chapter RE-PACKING the Printer 24 Removing the Drum Unit Assembly 25 Placing the Drum Unit in the Plastic Bag Alarm ↔ Paper ↔Toner ↔ For HL-1050 only If the error occurs again, the interface hardware may be Service Call RAM error Service a Service B Locating Paper Jam Position Paper Jams Do Not Pull the Jammed Paper from the Output Tray Paper Jam in the Multi-Purpose Sheet Feeder Paper Jam in the Fuser Unit Paper Jam near the Drum Unit or at the Paper Output Tray Setting Up the Printer Hardware Setting Up the Printer for WindowsPower switch is on For HL-1050 Setting Up the Printer for DOS For HL-1040/1050 Only Paper Handling Printing Printer cannot print full pages of a document. a Together right now, over Print Quality Toner scatters and stains the printed Printer Interior and Drum Unit Chapter Appendix Functions Electrical and Mechanical Parallel Interface Specifications Fig. A-1 Parallel Interface Cable Universal Serial BUS USB Interface HL-1050 only HL-1040 Bitmapped Fonts Resident FontsHL-1050 Bitmapped Fonts Scalable Fonts Intellifont Compatible Fonts OCR Symbol Sets HL-1050 Only Symbol SETS/CHARACTER SetsHP LaserJet IIP Mode HL-1040 HP LaserJet 6P Mode HL-1050 IBM Mode HL-1040/1050 Epson Mode HL-1040/1050 HP LaserJet IIP / HP LaserJet 6P HP LaserJet IIP/6P, Epson FX-850, IBM Propritner XL Appendix Compilation and Publication Notice Trademarks International Energy Star Compliance Statement Industry Canada Compliance Statement For Canada Only Laser Safety For 110-120 V Model Only Radio Interference 220-240 V Model OnlyFDA Regulations For 110-120 V Model Only EMC IEC 825 Specification For 220-240 V Model Only Lpa 70 dB a DIN 45635-19-01-KL2 Important Wiring Information For U.K. only Index 3-3

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