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Make/Model Information:

  • Brand:   Brother
  • Models included:
    • Brother HL-5240
    • Brother HL-5250DN
    • Brother HL-5270DN
    • Brother HL-5280DW

File Information:

  • Type:   Factory Service Manual (FSM)
  • Language:   English
  • Number of pages:   371
  • File size:  ∼ 12.54 MB
  • File Format:   PDF only
  • SME Watermarks:   None
  • Password lock:   No
  • Edit/copy/modify:   Yes
  • SKU:   BMBR-1026

NOTE:  This list was created by program script and may not accurately represent the text from the source pages.   For full preview please click on 'Download sample':

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REGULATION
SAFETY INFORMATION
CHAPTER 1 GENERAL
1. FEATURES
2. PARTS NAMES AND FUNCTIONS
2.1 Overview
2.2 Control Panel
3. SPECIFICATIONS
3.1 Printing
3.2 Functions
3.3 Electronics and Mechanics
3.4 Service Information
3.5 Network Connectivity
3.6 Paper
3.6.1 Paper handling
3.6.2 Media specifications
3.7 Printable Area
3.7.1 PCL5e/EPSON/IBM emulation
3.7.2 PCL6 emulation
3.8 Print Speeds with Various Settings
3.9 Toner Cartridge Weight Information
4. SERIAL NO. DESCRIPTIONS
CHAPTER 2 THEORY OF OPERATION
1. OVERALL
1.1 General Block Diagram
2. ELECTRONICS
2.1 General Block Diagram
2.2 Main PCB Block Diagram
2.3 Main PCB
2.3.1 CPU
2.3.2 USB interface (2.0 High Speed)
2.3.3 IEEE 1284 interface
2.3.4 Network interface
2.3.5 ROM
2.3.6 SDRAM
2.3.7 Optional RAM
2.3.8 EEPROM
2.3.9 Reset circuit
2.3.10 Panel I/O
2.3.11 Video I/O
2.3.12 Power supply
2.3.13 Wireless LAN
2.4 Power Supply
2.4.1 Low-voltage power supply
2.4.2 High-voltage power supply
3. MECHANICS
3.1 Overview of Printing Mechanism
3.2 Overview of Gear
3.3 Paper Transfer
3.3.1 Paper supply
3.3.2 Paper registration
3.3.3 Drum unit
3.3.4 Developing
3.3.5 Fixing stage
3.3.6 Paper eject
3.3.7 Duplex printing (HL-5250DN/5270DN/5280DW)
3.3.8 Paper feeding from the MP tray
3.3.9 LT tray
3.4 Toner Cartridge
3.4.1 Toner life end mode
3.4.2 New toner detection mechanism
3.4.3 Counter reset during indication of “Toner Life End”
3.5 Print Process
3.5.1 Charging
3.5.2 Exposure stage
3.5.3 Transfer
3.6 Sensors
3.7 Heat Control of Fuser Unit
CHAPTER 3 PERIODIC MAINTENANCE
1. CONSUMABLE PARTS
1.1 Toner Cartridge
1.2 Drum Unit
2. PERIODICAL REPLACEMENT PARTS
2.1 Periodical Replacement Parts
2.2 Procedures to Replace Periodical Replacement Parts
2.2.1 Fuser unit and laser unit
2.2.2 Paper feeding kit for tray 1, 2, 3
2.2.3 Paper feeding kit for MP tray
3. PERIODICAL CLEANING
3.1 Cleaning the Inside of the Printer
3.2 Cleaning the Corona Wire
CHAPTER 4 TROUBLESHOOTING
1. INTRODUCTION
1.1 Initial Check
1.2 Warnings for Maintenance Work
1.3 Identify the Problem
2. ERROR MESSAGE
2.1 Operator Calls
2.1.1 Operator calls for HL-5240/5250DN
2.1.2 Operator calls for HL-5270DN/5280DW
2.2 Service Calls
2.2.1 Service calls for HL-5240/5250DN
2.2.2 Service calls for HL-5270DN/5280DW
2.3 Error Message in the Status Monitor
2.4 Error Message Printouts
3. PAPER PROBLEMS
3.1 Paper Loading Problems
3.2 Paper Jams
3.2.1 Paper jams and how to clear them for HL-5240/5250DN
3.2.2 Paper jams and how to clear them for HL-5270DN/5280DW
3.2.3 Causes & countermeasures
3.3 Paper Feeding Problems
4. SOFTWARE SETTING PROBLEMS
5. MALFUNCTIONS
6. IMAGE DEFECTS
6.1 Image Defect Examples
6.2 Diameter of Rollers
6.3 Troubleshooting Image Defect
6.4 Location of Grounding Contacts
6.4.1 Drum unit
6.4.2 Printer body & Paper tray
7. INCORRECT PRINTOUT
8. NETWORK PROBLEM
8.1 Installation Problem
8.2 Printing Problem
8.3 Protocol-Specific Troubleshooting
8.4 Wireless Network Troubleshooting
CHAPTER 5 DISASSEMBLY AND RE-ASSEMBLY
1. SAFETY PRECAUTIONS
2. PACKING
3. SCREW TORQUE LIST
4. HARNESS ROUTING
5. LUBRICATION
6. DISASSEMBLY FLOW
7. DISASSEMBLY PROCEDURE
7.1 AC Cord
7.2 Drum/Toner ASSY
7.3 DX Feed ASSY
7.4 Paper Tray
7.5 Back Cover
7.6 DX Blank Cover (For HL-5240)
7.7 Outer Chute ASSY
7.8 Fuser Unit
7.9 Tray MP ASSY
7.10 MP Tray Cover ASSY/Process Cover ASSY
7.11 Access Cover/ Side Cover L
7.12 Main PCB
7.13 Gear Plate Calking ASSY AL/Develop Joint/Main Motor ASSY AL
7.14 Main Shield Plate ASSY
7.15 Relay Rear PCB ASSY/Connector
7.16 Relay Front PCB ASSY
7.17 MP Solenoid ASSY
7.18 Drive Release Link
7.19 T1 Solenoid ASSY
7.20 Toner Sensor PCB
7.21 Register Solenoid ASSY
7.22 Ejector Solenoid ASSY (For HL-5250DN/5270DN/5280DW)
7.23 Interlock SW ASSY
7.24 New Toner Actuator
7.25 Gear 17/20
7.26 Side Cover R
7.27-1 Top Cover Printed ASSY (For HL-5240/5250DN)
7.27-2 Panel PCB ASSY
7.27-3 SW Key A/B
7.27-4 Inner Chute/Pinch Roller Holder
7.28-1 Top Cover 2 Printed ASSY/Panel Plate Printed ASSY (For HL-5270DN/5280DW)
7.28-2 Inner Chute/Pinch Roller Holder
7.28-3 Panel PCB ASSY
7.28-4 SW Key A/B/C/ Set Key Printed ASSY
7.28-5 LCD Holder ASSY
7.29 F ilter
7.30 Laser Unit
7.31 PS PC B Unit
7.32 High-Voltage PS PCB ASSY
7.33 Toner LED PCB Unit ASSY
7.34 Fan Moto r 60 Unit
7.35 Fan Motor 60 Unit LV
7.36 Fram e L
7.37 Fram e R
7.38 MP Unit
7.39 Regist Actuator Rear/Regist Actuator Spring
7.40 Regist Actuator Front/Regist Actuator Spring
7.41 Roller Ho lder ASSY
7.42 PE Actuator, Edge Actuator, Edge Actuator Spring
7.43 PE PG Sensor ASSY
7.44 Wireless PCB (PCB T60H929.00 ASSY 02) (For HL-5280DW)
8. DISASSEMBLY PROCEDURE (LT-5300)
8.1 Paper Tray
8.2 LT Front Cover ASSY
8.3 LT Rear Cover
8.4 LT Side Cover L
8.5 LT Side Cover R
8.6 LT PCB ASSY
8.7 Connector: 55533-1219
8.8 Connector: 54702-1219
8.9 Gear 24LT
8.10 Colla r 6
8.11 LT Sol enoid ASSY
8.12 Roller Ho lder ASSY
8.13 Edge Actuat or Spring
8.14 PE Actuator, Edge Actuator
8.15 LT Sensor PCB ASSY
REQUIRED AFTER PARTS REPLACEMENT
1. IF YOU REPLACE THE MAIN PCB
2. IF YOU REPLACE THE PERIODICAL MAINTENANCE PARTS
CHAPTER 7 SERVICE SUPPORT SOFTWARE
1. CONTROL PANEL
1.1 User s Mode
1.2 User Maint enance Mode
1.3 Servic e Mode
2. HIDDEN FUNCT ION MENUS
2.1 Professi onal Menu
2.2 Reset Parts Life Menu
2.3 Servic e Menu
3. NVRAM DEFAULT VALUE
1. MAIN PCB CIRCUIT DIAGRAM
2. LOW-VOLTAGE POWER SUPPLY PCB CIRCUIT DIAGRAM (100V, 200V)
3. HIGH-VOLTAGE POWER SUPPLY PCB CIRCUIT DIAGRAM
4. POINT TO POINT CONNECTION DIAGRAM
5. GEAR LAYOUT DRAWING
6. READMARKS
7. LOCATION OF THE FERRITE CORE


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