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Brother HL-1260 service manual Appendix 4. Main PCB Circuitry Diagram 2/7

Models: HL-1260

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

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Appendix 4. Main PCB Circuitry Diagram (2/7)

CODE	UK3268000
NAME	B48K259/235CIR (2/7)
	A-3

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Brother HL-1260 service manual Appendix 4. Main PCB Circuitry Diagram 2/7

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Contents

Laser Printer MODELHL-1260 Page Preface Chapter General Chapter III Electrical System Iii Chapter V Maintenance and Servicing Specifications Features OPC Printing system Photosensitive drum Plain Paper Effective printing areaEnvelope OCR-A OCR-B 2M bytes expandable to 26M bytes RAM Laser Safety 110 ~ 120V Model only Safety Information Additional Information Cdrh Regulations 110 ~ 120V Model only External Views Parts of the Printer Cross Sectional View Storage of Sealed EP-ED Cartridges Storage and Handling of EP-ED CartridgesStorage of Unsealed EP-ED Cartridges Basic Operations Mechanical Configuration Main Drive Timing for two consecutive prints on A4 paper Basic Sequence of Operations To external device Main PCB LASER/SCANNER SystemScanner driver Collimator lens Scanning mirror Optical sensor Scanner motor Outline Image Formation SystemPrinting Process Electrostatic latent image formation stage Scanning exposure Primary charge+ + + Development Developing stage Transfer Transfer stageReference Separation Drum cleaning Drum cleaning stageFixing stage Fixing PCB Operation PCB Paper PICK-UP/FEED System Stby Print Cassette Feed MP Tray Feed Main motor Pick-up solenoid Registration Sensor Paper Jam DetectionJam check Jam inside Main motor Paper feed Motor Registration Sensor Jam rear Main PCB Main PCB Block Diagram SLOT1 4MB SLOT2 2MB SLOT3 1MB Video Controller Circuit III Memory map Simm map B48K158 Engine Controller Circuit Main PCB Circuit Paper Feed Drive Circuit SW PCB Display Circuit Protection Functions LOW-VOLTAGE Power Supply Assy 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 Printer Body ConfigurationToner 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 Main PCB DC Fan MotorRemove the Simm replace lid Remove the MIO box Remove the main PCB assy Hooks Control panel unit Control Panel Unit Cartridge Stopper Assy Scanner Unit Paper Feed Chassis Unit Remove the paper feed chassis unit Separation Pad AssyRemove the spring from the separation pad assy Pull out the size-switch spring Side-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 Assy MP Tray Cover 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 DC Gear Holder Assy PS Switch Wire, Remote Switch Low-Voltage Power Supply PCB Assy High-Voltage Power Supply PCBRemove 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 Initial Check Introduction Test Printing and Mechanical Check Basic ProcedureTest Printing Image Defect Examples Image Defects Light Troubleshooting Image Defects Dark Completely blank All black Dirt on back of paper Polka dots Possible cause Step Check Result Remedy ErrorCheck the toner image on the drum Replace the fixing unit White vertical streaks Dropout Poor fixing Faulty registration No DC power supplied Troubleshooting of Malfunctions 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? Scanner unit On again? 17 41 Print Check is displayed Paper Jams Troubleshooting Paper Transport Problems 1a Paper pick-up block Pick miss 1b Paper pick-up block Oblique feed jam Step Check Result Remedy Print Paper Clean the static-chargeInstruct the user to use Recommended type of paper Double feeding Incomplete Paper Feed Operation Line Inspection Mode Procedure3 4 5 6 7 Turn off the power Switch to check the font cartridgePress Flash memory check Video Controller Dram Address Corresponding Table Dram TestReplace the Dram on the Main PCB Replace the Simm Operator Call Messages Status Message List Error Message Meaning Action Error Messages 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 Legal LetterISO Executive B5 ISO COM-10 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 Main PCB Circuit 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 No paper pick-up from cassette or MP tray Motor Malf is displayed The main motor rotation disabled Reference Value 16 52 Scanner Malf is displayed 14 50 Fuser Malf is displayed 17 41 Print Check is displayed Wrong size of paper was Load the requested size Upper cover Close the cover. See M-6 Printer is open Error Messages Equipping DX for 1260/e Use DX for HL-1660 Equipping LT for 1260/e Use LT for HL-1660 Service Error Turn off the printer. Wait a 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 PR99087 Paper Feeder 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 UH1565001 UH1835001087320616 085310815 TI no -P049 / PR99087 ADD LT-2000 54T UH2952001 UH2901001UH2905000 UH2906000 Parts Reference List Revision No. marked on a printed circuit board B48K056 201 a Contents Power Cords & Harnesses Power Cords & Harnesses TI No.96-P035 / PR98309 Control Panel Control Panel REF.NO Code QTY Description Symbol Remark TI No.96-P013 /96-P046 B48K234 TI No.PR97114 Main PCB, Others TI No.96-P013 / 96-P046 Main PCB, Israel TI No. PR97114 Main PCB, Israel TI No.96-P033 HIGH-VOLTAGE Power Supply Covers Covers REF.NO. Code QTY Description Remark TI No.96-P077 / 97-P021 Paper Tray TAPTITE, CUP S M3X10 TI no -P049 / PR97037 / PR97131 / PR98202 Paper Feeder REF.NO Code QTY Description Remark TI No.PR97148, PR98054, PR98061 TI No.96-P018 SCN Harness 4P TI No.96-P044 / 97-P009 Packing Materials Documents 43-D,N,O TI no -P066NO. PR98047 Adjusting Tool KIT Tool no Tool Name Remark Brother Laser Printer USER’S Guide Compilation and Publication Trademarks Laser Printer HL-1260e/HL-1660 Definitions of Warnings, Cautions, and Notes Table of Contents Before Working with the Printer Switches in Normal Mode Options Appendix-1 Index Important About the Interface Cable Important Information Regulations Cdrh Regulations 110-120 V model only Laser Safety 110-120 V model only IEC 825 220-240 V model only Radio Interference220-240 V model only Wiring Information For U.K. only For Your Safety Green and Yellow Earth Blue Neutral Brown Live Declaration of Conformity Europe About this Manual Chapter General USER’S Guide For Windows 3.1 user About Chapters on the Floppy Disk About this Printer Features Three Interfaces Universal Paper Cassette and Manual LoadingAutomatic Interface Selection Five Emulation Modes Data Compression Technology Automatic Emulation SelectionMemory Expansion Scalable and 12 Bitmapped Fonts OCR-A OCR-B Toner Save Mode Power 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 Front View General View Operating and Storage Environment Power SupplyEnvironment Opening and Closing the Printer Setting UP the Printer Removing the Protective Parts Removing the Protective Parts No Cartridge Installing the Toner 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 Turning the Printer On and Off Plugging in the Power Cord Self Test Pressing the Power SwitchLJ Ready 001P T1 Printing the Test Patterns or Lists Print Fonts P Print Fonts C ABC Checking the Printed Test Pattern or Demo Software Compatibility Chapter Before Working with the Printer USER’S Guide LJ Ready Automatic Emulation SelectionBS Idle GL Ready USER’S Guide OFF Automatic Interface Selection USER’S Guide About the Control Panel Adjusting the Control Panel Angle Selecting the Local Language Display Switch Operation in Normal and Shift Modes Using the Panel Switches User Settings Printer SettingsFactory Settings Print Media Paper HandlingPaper Size USER’S Guide Envelope Information Using Envelopes Envelopes Load Paper Cassette Feed Cassette Feed Manual Feed Face Up Print Delivery Face Down Print Delivery Display Display and Lamps Busy IdleSleep Print FF Pause Reset to User Settings Data Lamps SEL Switch Switches in Normal Mode UP or Down Switch SET 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 Graphics Mode PEN Setting SETTING=PEN1 Mode Switch Settings in HP-GL Mode Legal Basic Operation Procedures =PARALLEL =AUTO=OPTION Operation Example Selecting the Parallel Interface Interface Mode BI-DIR=ON High SPEED=ON Robust Xon =OFF Dtrer =ON ORI=PORTRAIT Format Mode Auto CR =OFF Auto LF =OFFAuto Wrap =OFF Auto Skip =ON Format Mode Left M Paper =LETTERRight 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 =ON APT =OFFHRC =OFF HRC =LIGHT Print Overrun Protection PROTECT=LETTER PROTECT=AUTOPROTECT=A4 PROTECT=LEGAL Format Card Save Card ListDelete Save Macro Save DataPrimary Font Download Font SET KEY -- END Macro ID=##### USER’S Guide Font ID=##### Delete the selected ID macro Lock PANEL=OFF SET--DELETE ALLAuto FF=ON FF SUPPRESS=OFF LOCK=ON LOCK=OFFPass NO= Incorrect Wait TIME= 1s Auto FF=OFF Error Print BUZZER=OFF BUZZER=ONFONT=ALL FONT=LJ4 Print Density Save Settings Counter Symbol SET Font SwitchSetting the Font and Symbol Set in the HP LaserJet 4+ Mode Primary Font Secondary Font Secondary Font Slotfont Internal FontSlotfont B Permanent Font Brougham Reg p Roman PITCH= Table Print Select Font Internal Font Brougham Reg Brougham PITCH= US Ascii Lettergothic BR SymbolOCR-A OCR-B ISO LATIN2 UK Ascii ISO LATIN1 GermanISO LATIN5 French Danish Form Feed Form Feed Switch Reprint Switch USER’S Guide Continue Switch Shift Switch Switches in Shift Mode Auto Emulation SwitchHP-GL Epson FX-850 Keep PCL=OFF EPSON/IBM=EPSON About Emulation Modes USER’S Guide Toner SAVE=OFF Economy SwitchToner SAVE=ON Feeder Switch FEEDER=TRAY1 FEEDER=MP TrayFEEDER=TRAY2 MP First AUTO=T1MP MP SIZE=LETTER MP Tray Setting Media Type Paper IN=CONT DUPLEX=OFF RegularBIND=LONG Binding Copy PAGES= Copy Switch Reset Printer Reset SwitchReset Setting Factory Settings Reset to Setting # Reset to User SettingsReset 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 Loading Paper from the Lower Paper Cassette Lower Tray Unit LT-1200/LT-1600 Font CARTRIDGE/CARD, Flash MEMORY/HDD Card MCM33708DFB See Printing the Test Pattern or Font List in Chapter Selecting the Optional Fonts Find the font slot and font ID number on the list Modular I/O Card Installing the MIO 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 the Printer Exterior Cleaning Cleaning the Paper Cassette Cleaning the Printer Interior Cleaning the Paper Access Cover Transfer Guide Operator Call Messages Troubleshooting Check Font Manual FeedNo DX Unit No DX Tray Buffer Error Error MessagesLine Error Memory Full Simm Error Card W ErrorMIO Error XX Size Error Service Call Messages Paper Jam Possible Problems Paper Jam at Paper Exit JAM Rear Paper Jam at Rear Access Cover Paper Jam at Fixing Roller JAM Inside Paper Jam at the Paper Access Cover Inside the Printer Paper Jam at Paper Cassette JAM Trays White Stripes or Faint Images Unsatisfactory Printouts Removing the Toner Cartridge 10 Distributing the Toner Evenly 11 Dark Stripes or Toner Stains 12 White Spots Black HRC = OFF HRC = Medium BBS Printing Printer Specifications CPU Functions Electrical and Mechanical Option Paper Specifications Paper Paper Types to Avoid Labels and Overhead Transparencies Interface Connector Interface SpecificationsBi-directional Parallel Interface Pin Assignment Acknlg OUT Signal Description Signal Printer Pin No Computer Pin No Interface Connectors Standard SpecificationsRS-232C Serial Interface Signal Name IN/OUT Explanation Frame Ground Printer Male OCR Symbol Sets SYMBOL/CHARACTER 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 US Ascii Epson Mode 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 PCL Command Sets Quick Reference of Commands 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 @PJL Enter Language = PCL Horizontal 1200-dpi Image Format ModeRaster Graphic Mode Block data is composed as follows Appendix-54 Bezier Relative HP-GL/2 Command Sets Appendix-56 DEC HEX Printer Job Language Commands Syntax BEL Epson FX-850 Mode Appendix-59 Appendix-60 IBM Proprinter XL Mode Appendix-62 Appendix-63 Appendix-64 Appendix-65 Print Bar Codes or Expanded Characters Bar Code Control 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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