This Brother HL-3040CN, 3070CW Service Manual provides detailed diagrams, pictures, and procedures for diagnosing and repairing your Brother HL-3040CN, 3070CW copier. It is a comprehensive resource for both professional mechanics and DIY enthusiasts.
The manual includes the following chapters:
PREFACE
REGULATION
CHAPTER 1: SPECIFICATIONS
COMPONENTS
SPECIFICATIONS LIST
General
Network Connectivity
Service Information
Consumables
Paper
Paper handling
Media specifications
Type and size of paper
Printable Area
Print Speeds with Various Settings
CHAPTER 2: THEORY OF OPERATION
GENERAL BLOCK DIAGRAM
ELECTRONICS GENERAL BLOCK DIAGRAM
MECHANICS
Cross-section Drawing
Paper Feeding
Plate-up function of the paper tray
Paper supply
Paper registration
Paper eject
Paper supply from manual feed slot and paper eject from back
Toner Cartridge
Type of toner cartridge
Life of toner cartridge
Method of detecting toner life
Relationship between toner amount and life of toner cartridge in number of rotations of develop roller
New toner detection
Method of counting the number of toner replacements
Principle of Color Overlapping
Basic Printing Principle
Charging
Exposure
Development
Transfer
Fusing
Toner cleaning
Location of Sensors
Adjustment of Color Registration
Color registration error in sub/main scanning direction
Adjustment of Color Density
CHAPTER 3: ERROR INDICATION AND TROUBLESHOOTING
INTRODUCTION
Precautions
Components
Initial Check
ERROR INDICATIONS
Error Codes
Error Messages
Error Cause and Remedy
PAPER FEEDING PROBLEMS
No Feeding
Double Feeding
Paper Jam
Dirt on Paper
Wrinkles on Paper
IMAGE DEFECT TROUBLESHOOTING
Image Defect Examples
Pitch Indicated in Roller Image
Troubleshooting Image Defect
SOFTWARE SETTING PROBLEMS
Cannot Print Data
NETWORK PROBLEMS
Cannot Make a Print through Network Connection
OTHERS PROBLEMS
The Machine is Not Turned ON, or The LCD Indication Does Not Appear
The Fan Does Not Work
CHAPTER 4: PERIODICAL MAINTENANCE
SAFETY PRECAUTIONS
CONSUMABLE PARTS
PERIODICAL MAINTENANCE PARTS
Periodical Maintenance Parts
Procedures to Replace Periodical Maintenance Parts
Fuser unit
Paper feeding kit
CHAPTER 5: DISASSEMBLY AND ASSEMBLY
SAFETY PRECAUTIONS
PACKING
SCREW TORQUE LIST
LUBRICATION
OVERVIEW OF GEARS
HARNESS ROUTING
DISASSEMBLY FLOW
DISASSEMBLY PROCEDURE
Support Flap
Roller Holder ASSY
CHAPTER 6: ADJUSTMENTS AND UPDATING OF SETTINGS, REQUIRED AFTER PARTS REPLACEMENT
IF YOU REPLACE THE MAIN PCB
Rewriting the Firmware (Main Firmware, Sub Firmware (GDI or PCL/PS))
Checking firmware version
Rewriting the firmware using computer
Rewriting the firmware using USB flash memory (HL-3070CW only)
