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Brother HL-1260 service manual Appendix 6. Main PCB Circuitry Diagram 4/8

Models: HL-1260

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Troubleshooting Specs Install Error codes Main PCB Block Diagram Signal Description Error Symbol SET PS Switch Wire, Remote Switch Maintenance

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Appendix 6. Main PCB Circuitry Diagram (4/8)

CODE	UK2495000

NAME	B48K158/159CIR(4/8)

A-6

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Brother HL-1260 service manual Appendix 6. Main PCB Circuitry Diagram 4/8

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Contents

Laser Printer MODELHL-1260 Page Preface Chapter General Chapter III Electrical System Chapter V Maintenance and Servicing Iii Features Specifications Printing system Photosensitive drum OPC Plain Paper Effective printing areaEnvelope OCR-A OCR-B RAM 2M bytes expandable to 26M bytes Safety Information Laser Safety 110 ~ 120V Model only Cdrh Regulations 110 ~ 120V Model only Additional Information Parts of the Printer External Views Cross Sectional View Storage of Sealed EP-ED Cartridges Storage and Handling of EP-ED CartridgesStorage of Unsealed EP-ED Cartridges Mechanical Configuration Basic Operations Main Drive Basic Sequence of Operations Timing for two consecutive prints on A4 paper LASER/SCANNER System To external device Main PCBScanner driver Collimator lens Scanning mirror Optical sensor Scanner motor Outline Image Formation SystemPrinting Process Electrostatic latent image formation stage Scanning exposure Primary charge+ + + Developing stage Development Transfer stage TransferReference Separation Drum cleaning stage Drum cleaningFixing stage Fixing Operation PCB Paper PICK-UP/FEED System PCB Cassette Feed Stby Print MP Tray Feed Paper Jam Detection Main motor Pick-up solenoid Registration SensorJam check Jam inside Main motor Paper feed Motor Registration Sensor Jam rear Main PCB Block Diagram Main PCB Video Controller Circuit SLOT1 4MB SLOT2 2MB SLOT3 1MB III Memory map Simm map B48K158 Engine Controller Circuit Main PCB Circuit Paper Feed Drive Circuit SW PCB Display Circuit LOW-VOLTAGE Power Supply Assy Protection Functions Low-Voltage Power Supply PCB Block Diagram HIGH-VOLTAGE Power Supply Assy 10 High-Voltage Power Supply Block Diagram 11 High-Voltage Power Supply Block Diagram Chapter IV Mechanical System Prinnter Disassembling Procedure Configuration Printer BodyToner Cartridge Lid Side Cover L Upper Cover Assy, Rear Cover Assy Font Cover AssyUpper cover assy, rear cover assy Changeover guide, jam remove cover Side Cover RRemove the side cover R by releasing the 4 hooks DC Fan Motor Main PCBRemove the Simm replace lid Remove the MIO box Remove the main PCB assy Control Panel Unit Hooks Control panel unit Scanner Unit Cartridge Stopper Assy Paper Feed Chassis Unit Remove the paper feed chassis unit Separation Pad AssyRemove the spring from the separation pad assy Side-Switch Spring Pull out the size-switch springMP PE Sub Actuator Feed /Size-SW PCB Assy MP Paper Detection Actuator Regist sensor actuatorPE Sensor Actuator MP Roller Holder Tray Sensor HolderRemove the gear Loosen and pull out the 2 screws Paper Pick-up Roller Assy, Bearing Paper Feed Motor Assy Paper Pick-up SolenoidRemove each solenoid by loosening their screw MP Tray Cover MP Tray Assy Remove the 2 fixing bushes Remove the MP tray assy Paper Path Separation Plate, Paper Path Separation FilmRemove them from the paper feed guide lower by bending them Latch Loosen a screw and remove the fixing PCB assy Paper delivery actuator Fixing unit cover Transfer Unit PS Switch Wire, Remote Switch DC Gear Holder Assy High-Voltage Power Supply PCB Low-Voltage Power Supply PCB AssyRemove the PS switch wire Loosen the 2 screws on the side Loosen the 4 screws on the top Paper Tray Toner Cartridge EP-ED CartridgeRemove the toner cartridge from the body Screws Tray gear holder Gear 56T link Consumable Parts Standard Endurance Table Periodical Replacement PartsWithout prior notice Compression spring scale List of Standard ToolsSnap-ring pliers, ext List of Lubricants and Cleaners Introduction Initial Check Test Printing and Mechanical Check Basic ProcedureTest Printing Image Defects Image Defect Examples Troubleshooting Image Defects Light Dark All black Completely blank Polka dots Dirt on back of paper Error Possible cause Step Check Result RemedyCheck the toner image on the drum Replace the fixing unit Dropout White vertical streaks Faulty registration Poor fixing Troubleshooting of Malfunctions No DC power supplied Is the pulse of 4KHz output? Buzzer Press the Mode switch and select Advanced mode Main PCBStep Check Result Remedy Upper cover 14 no Cartridge is displayed 16 Toner Empty is displayed Motor Malf is displayed The main motor rotation disabled High-voltage Yes Replace the high-voltage Off? On again? Scanner unit 17 41 Print Check is displayed Troubleshooting Paper Transport Problems Paper Jams 1b Paper pick-up block Oblique feed jam 1a Paper pick-up block Pick miss Clean the static-charge Step Check Result Remedy Print PaperInstruct the user to use Recommended type of paper Incomplete Paper Feed Double feeding Operation Line Inspection Mode Procedure3 4 5 6 7 Switch to check the font cartridge Turn off the powerPress Flash memory check Video Controller Dram Address Corresponding Table Dram TestReplace the Dram on the Main PCB Replace the Simm Status Message List Operator Call Messages Error Messages Error Message Meaning Action Card Full Service Call Message Meaning Action Service Call MessagesError Turn off the printer. Wait Appendix 1. Engine Block Diagram Appendix 2. Paper Feed/Size-SW PCB Circuitry Diagram 1/1 Appendix 3. Main PCB Circuitry Diagram 1/8 Appendix 4. Main PCB Circuitry Diagram 2/8 Appendix 5. Main PCB Circuitry Diagram 3/8 Appendix 6. Main PCB Circuitry Diagram 4/8 Appendix 7. Main PCB Circuitry Diagram 5/8 Appendix 8. Main PCB Circuitry Diagram 6/8 Appendix 9. Main PCB Circuitry Diagram 7/8 Appendix 10. Main PCB Circuitry Diagram 8/8 Appendix 11. Control Panel PCB Circuitry Diagram 1/1 Appendix 12. Scanner LD PCB Circuitry Diagram 1/1 Laser Printer Page Preface Storage and Handling of EP-ED Cartridges Refer to HL-1260 P.III-9 List of Lubricants and Cleaners Chapter I General Letter LegalISO Executive COM-10 B5 ISO OCR-A OCR-B 4M bytes expandable to 66M bytes Safety Information Additional Information HL-1660 Paper PICK-UP/FEED System MP Tray Feed Main motor Pick-up solenoid Registration Sensor Stby Print Jam rear Font Cartridge IC Card Pcmcia Asic HG51CS265FD SLOT1 4MB SLOT2 1MB ROMOA, OB, 1A, 1B ROM1B Main PCB HL-1260e Main PCB HL-1660 PCB Circuit Main PCB Chapter IV Mechanical System Printer Disassembling Procedure Screws yellow Simm replace lid Remove the main PCB assy Scanner Unit Scanner fan motor Paper Tray Number of print Malfunction of LCD display on the control panel No DC power suppliedMalfunction of control panel LED lamps Malfunction of buzzer Malfunction of control panel switchesCover Open is displayed even if the upper cover is closed 14 no Cartridge is displayed Step Check Result Remedy Motor Malf is displayed The main motor rotation disabled No paper pick-up from cassette or MP tray Reference Value 14 50 Fuser Malf is displayed 16 52 Scanner Malf is displayed 17 41 Print Check is displayed Upper cover Close the cover. See M-6 Printer is open Wrong size of paper was Load the requested size Error Messages Equipping LT for 1260/e Use LT for HL-1660 Equipping DX for 1260/e Use DX for HL-1660 Error Turn off the printer. Wait a Service Service Software1 Trap Turn off the printer. Wait a Scanner Unit Appendix 3. Main PCB Circuitry Diagram 1/7 Appendix 4. Main PCB Circuitry Diagram 2/7 Appendix 5. Main PCB Circuitry Diagram 3/7 Appendix 6. Main PCB Circuitry Diagram 4/7 Appendix 7. Main PCB Circuitry Diagram 5/7 Appendix 8. Main PCB Circuitry Diagram 6/7 Appendix 9. Main PCB Circuitry Diagram 7/7 Appendix 11. Scanner LD PCB Circuitry Diagram 1/1 Paper Feeder PR99087 Release Plate L ADD Paper Feeder Release Plate L ADD No. PR98202 / PR99087 Model HL-1660e 54T-U03-630 NO. PR98202 / PR99087 TI NO. PR99087 UH1835001 UH1565001087320616 085310815 TI no -P049 / PR99087 ADD LT-2000 54T UH2901001 UH2952001UH2905000 UH2906000 Parts Reference List B48K056 201 a Revision No. marked on a printed circuit board Contents Power Cords & Harnesses Power Cords & Harnesses Control Panel TI No.96-P035 / PR98309 Control Panel REF.NO Code QTY Description Symbol Remark B48K234 TI No.96-P013 /96-P046 Main PCB, Others TI No.PR97114 Main PCB, Israel TI No.96-P013 / 96-P046 Main PCB, Israel TI No. PR97114 TI No.96-P033 HIGH-VOLTAGE Power Supply Covers Covers REF.NO. Code QTY Description Remark Paper Tray TI No.96-P077 / 97-P021 TAPTITE, CUP S M3X10 TI no -P049 / PR97037 / PR97131 / PR98202 Paper Feeder REF.NO Code QTY Description Remark TI No.96-P018 TI No.PR97148, PR98054, PR98061 SCN Harness 4P Packing Materials TI No.96-P044 / 97-P009 Documents 43-D,N,O TI no -P066NO. PR98047 Adjusting Tool KIT Tool no Tool Name Remark USER’S Guide Brother Laser Printer Trademarks Compilation and Publication HL-1260e/HL-1660 Laser Printer Definitions of Warnings, Cautions, and Notes Table of Contents Before Working with the Printer Switches in Normal Mode Options Appendix-1 Index Important Information Regulations Important About the Interface Cable Laser Safety 110-120 V model only Cdrh Regulations 110-120 V model only Radio Interference220-240 V model only IEC 825 220-240 V model only For Your Safety Wiring Information For U.K. only Green and Yellow Earth Blue Neutral Brown Live Declaration of Conformity Europe Chapter General About this Manual USER’S Guide About Chapters on the Floppy Disk For Windows 3.1 user Features About this Printer Universal Paper Cassette and Manual Loading Three InterfacesAutomatic Interface Selection Five Emulation Modes Automatic Emulation Selection Data Compression TechnologyMemory Expansion Scalable and 12 Bitmapped Fonts OCR-A OCR-B Power Save Mode Toner Save ModeHigh Speed Printing with Microsoft Windows 95 / Windows Bar Code Print Reprint Function Saving User SettingsFlash Memory Card and HDD Card Options Checking the Components Before Using the PrinterPrinter Carton Toner Cartridge Toner Cartridge General View Front View Operating and Storage Environment Power SupplyEnvironment Setting UP the Printer Opening and Closing the Printer Removing the Protective Parts Removing the Protective Parts Installing the Toner Cartridge No Cartridge 10 Rocking the Toner Cartridge 12 Pulling Out the Sealing Tape Toner Empty Loading Paper in the Paper Cassette 14 Removing the Paper Cassette 15 Switching the Adjustment lever by Paper Size 17 Adjusting the Paper Cassette Sizes Getting Started 20 Placing Paper on the Multi-purpose Tray Connecting the Printer to Your Computer 21 Connecting the Printer and Computer Plugging in the Power Cord Turning the Printer On and Off Self Test Pressing the Power SwitchLJ Ready 001P T1 Printing the Test Patterns or Lists Print Fonts C Print Fonts P ABC Checking the Printed Test Pattern or Demo Chapter Before Working with the Printer Software Compatibility USER’S Guide Automatic Emulation Selection LJ ReadyBS Idle GL Ready USER’S Guide Automatic Interface Selection OFF USER’S Guide Adjusting the Control Panel Angle About the Control Panel Selecting the Local Language Display Using the Panel Switches Switch Operation in Normal and Shift Modes User Settings Printer SettingsFactory Settings Print Media Paper HandlingPaper Size USER’S Guide Using Envelopes Envelope Information Envelopes Cassette Feed Load Paper Manual Feed Cassette Feed Face Down Print Delivery Face Up Print Delivery Display and Lamps Display Idle BusySleep Print Reset to User Settings FF Pause Lamps Data Switches in Normal Mode SEL Switch SET Switch UP or Down Switch Mode Switch Interface Mode =PARALLEL High SPEED=ON Format Mode Orientation ORI=PORTRAIT Card List Mode Switch Settings in BR-Script 2 Mode Error Print Error PRINT=OFF Mode Switch Settings in HP-GL Mode Graphics Mode PEN Setting SETTING=PEN1 Legal Basic Operation Procedures =AUTO =PARALLEL=OPTION Operation Example Selecting the Parallel Interface Interface Mode High SPEED=ON BI-DIR=ON Dtrer =ON Robust Xon =OFF Format Mode ORI=PORTRAIT Auto LF =OFF Auto CR =OFFAuto Wrap =OFF Auto Skip =ON Format Mode Paper =LETTER Left MRight M = 80C P TOP M USER’S Guide Graphics Mode SETTING=PEN1 PEN SettingCharacter SET Alternate SET Standard SETAnsi Ascii APT Setting ResolutionHRC Setting Setting APT =OFF APT =ONHRC =OFF HRC =LIGHT Protection Print Overrun PROTECT=AUTO PROTECT=LETTERPROTECT=A4 PROTECT=LEGAL Format Card Save Card ListDelete Save Data Save MacroPrimary Font Download Font SET KEY -- END Macro ID=##### USER’S Guide Font ID=##### Delete the selected ID macro SET--DELETE ALL Lock PANEL=OFFAuto FF=ON FF SUPPRESS=OFF LOCK=OFF LOCK=ONPass NO= Incorrect Auto FF=OFF Wait TIME= 1s Error Print BUZZER=ON BUZZER=OFFFONT=ALL FONT=LJ4 Print Density Save Settings Counter Symbol SET Font SwitchSetting the Font and Symbol Set in the HP LaserJet 4+ Mode Secondary Font Primary Font Secondary Font Internal Font SlotfontSlotfont B Permanent Font Brougham Reg p PITCH= Roman Select Font Table Print Internal Font Brougham Brougham Reg PITCH= US Ascii BR Symbol LettergothicOCR-A OCR-B ISO LATIN1 German ISO LATIN2 UK AsciiISO LATIN5 French Danish Form Feed Switch Reprint Switch Form Feed USER’S Guide Continue Switch Switches in Shift Mode Shift Switch Emulation Switch AutoHP-GL Epson FX-850 EPSON/IBM=EPSON Keep PCL=OFF About Emulation Modes USER’S Guide Toner SAVE=OFF Economy SwitchToner SAVE=ON Feeder Switch FEEDER=TRAY1 FEEDER=MP TrayFEEDER=TRAY2 AUTO=T1MP MP First MP Tray Setting MP SIZE=LETTER Paper IN=CONT Media Type DUPLEX=OFF RegularBIND=LONG Binding Copy Switch Copy PAGES= Reset Switch Reset PrinterReset Setting Factory Settings Reset to User Settings Reset to Setting #Reset to Factory Settings List of Factory Settings Mode Interface Mode =AUTO EPSON, & IBM Paper Left M Right M TOP M Bottom M Offset OFFSET=0 Input Buffer Counter Toner Save Mode Toner SAVE=OFF Power Save Mode Power SAVE=ON Test Switch Demo Print Fonts HEX Dump Mode Control Panel Lower Tray Unit LT-1200/LT-1600 Loading Paper from the Lower Paper Cassette Font CARTRIDGE/CARD, Flash MEMORY/HDD Card MCM33708DFB Selecting the Optional Fonts See Printing the Test Pattern or Font List in Chapter Find the font slot and font ID number on the list Installing the MIO Card Modular I/O Card RAM Expansion Mitsubishi MH1M32ADJ-7 Removing the Left Side Cover Installing the SIMMs Duplex Unit DX-1200/DX-1600 For Duplex Toner Cartridge MaintenanceToner Empty Message Replacing the Toner Cartridge Cleaning the Anti-Static Teeth USER’S Guide Cleaning Cleaning the Printer Exterior Cleaning the Printer Interior Cleaning the Paper Cassette Cleaning the Paper Access Cover Transfer Guide Troubleshooting Operator Call Messages Manual Feed Check FontNo DX Unit No DX Tray Error Messages Buffer ErrorLine Error Memory Full Card W Error Simm ErrorMIO Error XX Size Error Service Call Messages Possible Problems Paper Jam JAM Rear Paper Jam at Paper Exit Paper Jam at Rear Access Cover JAM Inside Paper Jam at Fixing Roller Paper Jam at the Paper Access Cover Inside the Printer JAM Trays Paper Jam at Paper Cassette Unsatisfactory Printouts White Stripes or Faint Images Removing the Toner Cartridge 10 Distributing the Toner Evenly 11 Dark Stripes or Toner Stains 12 White Spots Black HRC = OFF HRC = Medium BBS Printer Specifications Printing Functions CPU Electrical and Mechanical Paper Specifications Option Paper Paper Types to Avoid Labels and Overhead Transparencies Interface Specifications Interface ConnectorBi-directional Parallel Interface Pin Assignment Signal Description Acknlg OUT Signal Printer Pin No Computer Pin No Interface Connectors Standard SpecificationsRS-232C Serial Interface Signal Name IN/OUT Explanation Frame Ground Printer Male SYMBOL/CHARACTER Sets OCR Symbol Sets HP LaserJet 4+ Mode PC-8 10U PC-8 D/N 11U PC-850 12U PC-852 17U Appendix-17 Legal 1U Ventura Math 6M Ventura Intl 13J Ventura US 14J PS Math 5M PS Text 10J Math-8 8M Pi Font 15U MS Publishing 6J Windows 3.0 9U Desktop 7J MC Text 12J Symbol 19M Windings 579L Epson Mode US Ascii PC-8 PC-8 D/N PC-850 PC-852 PC-860 PC-863 PC-865 PC-8 Turkish IBM Mode Appendix-26 HP-GL Mode FRENCH/GERMAN Scandinavian SPANISH/LATIN JIS Ascii ROMAN8 EXT ISO IRV ISO Swedish ISO Swedishn ISO Norway ISO German ISO French ISO U.K ISO Italian ISO Spanish ISO Portuguese ISO Norway These symbol sets are variations of the Roman-8 symbol set Appendix-33 Appendix-34 Appendix-35 Quick Reference of Commands PCL Command Sets Appendix-37 Appendix-38 Appendix-39 Appendix-40 Appendix-41 Appendix-42 Appendix-43 Appendix-44 Appendix-45 Appendix-46 Appendix-47 Appendix-48 Ccitt G3/G4 and Tiff original command Appendix-50 APT Horizontal 1200-dpi Image Format ModeRaster Graphic Mode @PJL Enter Language = PCL Block data is composed as follows Appendix-54 HP-GL/2 Command Sets Bezier Relative Appendix-56 Printer Job Language Commands Syntax DEC HEX Epson FX-850 Mode BEL Appendix-59 Appendix-60 IBM Proprinter XL Mode Appendix-62 Appendix-63 Appendix-64 Appendix-65 Bar Code Control Print Bar Codes or Expanded Characters Appendix-67 Appendix-68 Isbn UPC-E Appendix-70 Check digit FIM Lprint CHR$12 END Index Index-2 Paper access cover Symbol set 4-60,Appendix-14

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