Brother HL-4140CN, HL-4150CDN, HL-4570CDW, HL-4570CDWT, Service Manual

Service Manual Brother HL4140CN, HL4150CDN, HL4570CDW, HL4570CDWT;
This manual is in the PDF format and have detailed Diagrams, pictures and full procedures to diagnose and repair your Brother.
You can print, zoom or read any diagram, picture or page from this Service Manual. Every chapter on this manual is fully detailed and contain all theĀ  simulation codes, trouble codes, maintenance procedures, reset procedures, diagnose procedures of Brother HL4140CN, HL4150CDN, HL4570CDW, HL4570CDWT photocopier. You can find easily everything what do you need.
To see what contain, please read table of contents:

REGULATION
SAFETY INFORMATION

CHAPTER 1. SPECIFICATIONS
1. SPECIFICATIONS LIST
1.1 General
1.2 Network Connectivity
1.3 Service Information
1.4 Supplies
1.5 Paper
1.5.1 Paper handling
1.5.2 Media specifications
1.5.3 Type and size of paper
1.6 Unprintable Area

CHAPTER 2. ERROR INDICATION AND TROUBLESHOOTING
1. INTRODUCTION
1.1 Precautions
1.2 Initial Check
2. OVERVIEW
2.1 Cross-section Drawing
2.2 Paper Feeding
2.3 Operation of Each Part
2.4 Block Diagram
2.5 Components
3. ERROR INDICATIONS
3.1 Error Codes
3.2 Error Messages
3.3 Error Cause and Remedy
3.4 Paper Feeding Problems
3.4.1 No feeding
3.4.2 Double feeding
3.4.3 Paper jam
3.4.4 Dirt on paper
3.4.5 Wrinkles on paper
3.5 Image Defect Troubleshooting
3.5.1 Image defect examples
3.5.2 Pitch indicated in roller image
3.5.3 Troubleshooting image defect
3.6 Software Setting Problems
3.6.1 Cannot print data
3.7 Network Problems
3.7.1 Cannot make a print through network connection (Error code ED, EE)
3.8 Others Problems
3.8.1 The printer is not turned ON, or the LCD indication does not appear
3.8.2 The fan does not work (Error code 2B, EC)
3.8.3 The USB direct interface does not work (Error code CA, etc)
3.8.4 The room temperature is high or low
3.8.5 Paper is not fed from the specified tray

CHAPTER 3. DISASSEMBLY AND ASSEMBLY
1. SAFETY PRECAUTIONS
2. PACKING
3. SCREW CATALOGUE
4. SCREW TORQUE LIST
5. LUBRICATION
6. OVERVIEW OF GEARS
7. HARNESS ROUTING
8. DISASSEMBLY FLOW
9. DISASSEMBLY PROCEDURE
9.1 Paper Tray
9.2 Paper Stopper
9.3 Back Cover/Back Cover Stopper Arm L/R
9.4 Fuser Cover
9.5 Fuser Unit
9.6 Side Cover L/Access Cover
9.7 Side Cover R ASSY
9.8 Duplex Feed ASSY
9.9 MP Cover ASSY/MP Paper Guide ASSY
9.10 MP Link L/R
9.11 Front Cover Arm L/R
9.12 Front Cover Release Button/Front Cover Release Button Spring
9.13 Top Cover ASSY
9.14 Wireless LAN PCB
9.15 LCD ASSY
9.16 Panel PCB ASSY
9.17 USB Host Relay PCB ASSY
9.18 Main PCB ASSY
9.19 Engine PCB ASSY
9.20 Laser Unit
9.21 Develop Release Motor
9.22 Front Cover Sensor
9.23 Top Drive ASSY
9.24 Forced Develop Release Link
9.25 Drum Drive Motor
9.26 Drum Position Sensor PCB ASSY
9.27 Registration Solenoid ASSY
9.28 Develop Release Sensor PCB ASSY/Mono Solenoid ASSY
9.29 Fuser Develop Motor ASSY
9.30 PF Plate ASSY/T1 Solenoid ASSY
9.31 Toner/New Sensor PCB ASSY
9.32 Internal Temperature Thermistor
9.33 Fuser Fan
9.34 Paper Eject ASSY
9.35 Filter ASSY
9.36 Paper Eject Motor
9.37 Back Cover Sensor ASSY
9.38 Power Fan
9.39 Low-voltage Power Supply Unit
9.40 Paper Eject Sensor PCB ASSY
9.41 Low-voltage Power Supply PCB ASSY/Inlet Harness ASSY
9.42 Cleaner Pinch Roller Holder
9.43 Registration Mark Sensor Holder ASSY/Shutter Solenoid
9.44 MP Paper Empty/Registration Front Sensor PCB ASSY
9.45 PF ASSY
9.46 T1 Registration Front/Rear Sensor PCB ASSY
9.47 MP Sector Solenoid
9.48 T1 Paper Edge Sensor PCB ASSY/T1 Paper Edge Actuator/
T1 Paper Edge Actuator Spring
9.49 Cleaner Drive Gear 15
9.50 High-voltage Power Supply PCB ASSY
9.51 Waste Toner Sensor
9.52 Air Duct Cover/Blower
10. DISASSEMBLY PROCEDURE (LT-300CL)
10.1 T2 Paper Tray Unit
10.2 T2 Separation Roller ASSY/T2 Paper Feed Roller ASSY 1
10.3 T2 Cover Rear
10.4 T2 Cover Left
10.5 T2 Cover Right
10.6 T2 Relay PCB ASSY
10.7 T2 Solenoid ASSY
10.8 Collar 6
10.9 T2 Paper Feed Frame Unit

CHAPTER 4. ADJUSTMENTS AND UPDATING OF SETTINGS,
REQUIRED AFTER PARTS REPLACEMENT
1. IF YOU REPLACE THE MAIN PCB ASSY
1.1 Rewriting the Firmware (Sub Firmware, Main Firmware)
1.1.1 Checking firmware version
1.1.2 Rewriting the firmware using computer
1.1.3 Rewriting the firmware using USB flash memory
1.2 Initialization of EEPROM of Main PCB ASSY (Maintenance Mode: Code 01)
1.3 Setting by Country (Maintenance Mode: Code 74)
1.4 Setting the Serial Number
1.5 Sensitivity Adjustment of Density Sensor (Maintenance Mode: Code 72)
1.6 Performing the Developing Bias Voltage Correction (Maintenance Mode: Code 83)
1.7 Performing the Adjustment of Inter-color Position Alignment (Maintenance Mode: Code 66)
2. IF YOU REPLACE THE REGISTRATION MARK SENSOR HOLDER ASSY
2.1 Sensitivity Adjustment of Density Sensor (Maintenance Mode: Code 72)
2.2 Performing the Developing Bias Voltage Correction (Maintenance Mode: Code 83)
2.3 Performing the Adjustment of Inter-color Position Alignment (Maintenance Mode: Code 66)
3. IF YOU REPLACE THE HIGH-VOLTAGE POWER SUPPLY PCB ASSY
3.1 Sensitivity Adjustment of Density Sensor (Maintenance Mode: Code 72)
3.2 Performing the Developing Bias Voltage Correction (Maintenance Mode: Code 83)
3.3 Performing the Adjustment of Inter-color Position Alignment (Maintenance Mode: Code 66)
4. IF YOU REPLACE THE LASER UNIT
4.1 Sensitivity Adjustment of Density Sensor (Maintenance Mode: Code 72)
4.2 Performing the Developing Bias Voltage Correction (Maintenance Mode: Code 83)
4.3 Performing the Adjustment of Inter-color Position Alignment (Maintenance Mode: Code 66)
5. IF YOU REPLACE THE LOW-VOLTAGE POWER SUPPLY PCB ASSY
5.1 Reset of Irregular Power Supply Detection Counter
6. IF YOU REPLACE THE DRUM DRIVE MOTOR

CHAPTER 5. SERVICE FUNCTIONS
1. MAINTENANCE MODE
1.1 How to Enter the Maintenance Mode
1.2 How to Enter the End User-accessible Maintenance Mode
1.3 List of Maintenance-mode Functions
1.4 Detailed Description of Maintenance-mode Functions
1.4.1 EEPROM parameter initialization (Function code 01, 91)
1.4.2 Monochrome image quality test pattern (Function code 09)
1.4.3 Worker switch (WSW) setting and printout (Function code 10, 11)
1.4.4 Operational check of LCD (Function code 12)
1.4.5 Operational check of control panel button (Function code 13)
1.4.6 Software version check (Function code 25)
1.4.7 “One Push Demo” setting (Function code 28)
1.4.8 Operational check of sensors (Function code 32)
1.4.9 LAN connection status display (Function code 33)
1.4.10 Printout of EEPROM log (Function code 40)
1.4.11 Not-disclosed-to-users functions (Function code 45)
1.4.12 Adjustment of inter-color position alignment (Function code 66)
1.4.13 Continuous print test (Function code 67)
1.4.14 Laser unit test pattern print (Function code 68)
1.4.15 Frame pattern print (One-sided) (Function code 69)
1.4.16 Frame pattern print (Two-sided) (Function code 70)
1.4.17 Color test pattern (Function code 71)
1.4.18 Sensitivity adjustment of density sensor (Function code 72)
1.4.19 Setting by country (Function code 74)
1.4.20 Sensitivity adjustment of registration mark sensor and check of belt unit surface (Function code 75)
1.4.21 Printout of maintenance information (Function code 77)
1.4.22 Operational check of fans (Function code 78)
1.4.23 Display of machine history (log) (Function code 80)
1.4.24 Error code indication (Function code 82)
1.4.25 Developing bias voltage correction (Function code 83)
1.4.26 Exit from the maintenance mode (Function code 99)
2. OTHER SERVICE FUNCTIONS
2.1 Service Function Menus Enabled by Pressing Button (s) When Turning the Printer On
2.2 Developer Roller Counter Reset Function
2.3 Parts Life Reset Function
2.4 Printout of Printhttp://www.anyservicemanuals.com/wp-admin/post-new.php?post_type=downloader Settings
2.5 Deletion of User Setting Information, etc
2.6 How to Recover from Errors of the Fuser Unit
2.7 Switching of Return Value of USB No./Support for Banding
2.8 Drum Cleaning
2.9 Deep Sleep Function

CHAPTER 6 CIRCUIT DIAGRAMS & WIRING DIAGRAM
1. CIRCUIT DIAGRAMS
2. WIRING DIAGRAM

CHAPTER 7. PERIODICAL MAINTENANCE
1. PRECAUTIONS
2. PERIODICAL REPLACEMENT PARTS
2.1 Procedures to Replace Periodical Replacement Parts
2.1.1 Fuser unit
2.1.2 Laser unit
2.1.3 Paper feeding kit1
2.1.4 Paper feeding kit2
2.1.5 MP paper feeding kit

APPENDIX 1. SERIAL NUMBERING SYSTEM
APPENDIX 2. DELETION OF USER SETTING INFORMATION, ETC.
APPENDIX 3. INSTALLING THE MAINTENANCE DRIVER

Number of pages: 433.