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Make/Model Information:

  • Brand:   Brother
  • Models included:
    • Brother HL-820
    • Brother HL-1020
    • Brother HL-1040
    • Brother HL-1050

File Information:

  • Type:   Factory Service Manual (FSM)
  • Language:   English
  • Number of pages:   132
  • File size:  ∼ 3.10 MB
  • File Format:   PDF only
  • SME Watermarks:   None
  • Password lock:   No
  • Edit/copy/modify:   Yes
  • SKU:   BMBR-1028

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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CHAPTER I FEATURES AND SPECIFICATIONS
1. FEATURES
2. SPECIFICATIONS
2.1 Printing
2.2 Functions
2.3 Electrical and Mechanical
2.4 Paper Specification
2.5 Print Delivery
2.6 Paper
2.7 Effective Printing Area
3. SAFETY INFORMATION
3.1 Laser Safety (110 - 120V Model only)
3.2 FDA Regulations (110 - 120V Model only)
3.3 Caution for Laser Product
CHAPTER II THEORY OF OPERATION
1. ELECTRONICS
1.1 General Block Diagram
1.2 Main PCB Block Diagram
1.3 Main PCB
1.3.1 CPU Core
1.3.2 ASIC
1.3.3 ROM
1.3.4 DRAM
1.3.5 Optional RAM
1.3.6 Optional Serial I/O
1.3.7 EEPROM
1.3.8 Reset Circuit
1.3.9 CDCC I/O
1.3.10 Engine I/O
1.3.11 Paper Feed Motor Drive Circuit
1.4 Panel Sensor PCB
1.5 Power Supply
1.5.1 Low-voltage Power Supply
1.5.2 High-voltage Power Supply, SR PCB
2. MECHANICS
2.1 Overview of Printing Mechanism
2.2 Paper Transfer
2.2.1 Paper Supply
2.2.2 Paper Registration
2.2.3 Paper Eject
2.3 Sensors
2.3.1 Cover Sensor
2.3.2 Toner Empty Sensor
2.4 Drum Unit
2.4.1 Photosensitive Drum
2.4.2 Primary Charger
2.4.3 Developer Roller
2.4.4 Transfer Roller
2.4.5 Cleaner Roller
2.4.6 Erase Lamp
2.5 Print Process
2.5.1 Charging
2.5.2 Exposure Stage
2.5.3 Developing
2.5.4 Transfer
2.5.5 Drum Cleaning Stage
2.5.6 Erasing Stage
2.5.7 Fixing Stage
CHAPTER III DISASSEMBLY AND REASSEMBLY
1. SAFETY PRECAUTIONS
2. DISASSEMBLY FLOW
3. DISASSEMBLY PROCEDURE
3.1 Output Tray ASSY
3.2 Drum Unit
3.3 Top Cover
3.4 Rear Cover
3.5 MP Sheet Feeder ASSY
3.6 Fixing Unit
3.7 Scanner Unit
3.8 Main PCB ASSY
3.9 Base Plate ASSY
3.10 Panel Sensor PCB ASSY
3.11 Low-voltage Power Supply PCB ASSY
3.12 High-voltage Power Supply PCB ASSY
3.13 Sub Fan Motor ASSY
3.14 Fan Motor ASSY
3.15 Drive Unit
3.16 Main Motor ASSY
3.17 Sub Motor ASSY
3.18 Paper Support
3.19 Extension Support Wire
4. PACKING
CHAPTER IV MAINTENANCE AND TROUBLESHOOTING
1. INTRODUCTION
1.1 Initial Check
1.2 Basic Procedure
2. CONSUMABLE PARTS
2.1 Drum Unit
2.2 Toner Cartridge
2.3 Periodical Replacement Parts
3. IMAGE DEFECTS
3.1 Image Defect Examples
3.2 Troubleshooting Image Defects
3.3 Location of High-voltage Contacts and Grounding Contacts
3.4 Location of Feed Roller Shaft and Grounding Contacts
4. PAPER JAM
5. TROUBLESHOOTING MALFUNCTIONS
6. INSPECTION MODE
6.1 Incorporated Inspection Modes
6.2 Error Codes
1. Serial No. Descriptions
2. Connection Diagram, HL-820/1020
3. Connection Diagram, HL-1040
4. Connection Diagram, HL-1050
5. Main PCB Circuit Diagram, (HL-820/1020/1040), (1/2)
6. Main PCB Circuit Diagram, (HL-820/1020/1040), (2/2)
7. Main PCB Circuit Diagram, (HL-1050), (1/5)
8. Main PCB Circuit Diagram, (HL-1050), (2/5)
9. Main PCB Circuit Diagram, (HL-1050), (3/5)
10.Main PCB Circuit Diagram, (HL-1050), (4/5)
11.Main PCB Circuit Diagram, (HL-1050), (5/5)
12.Panel Sensor PCB Circuit Diagram
13.Low-voltage Power Supply PCB Circuit Diagram, HL-820/1020/1040 (110 - 120V)
14.Low-voltage Power Supply PCB Circuit Diagram, HL-820/1020/1040 (220 - 240V)
15.Low-voltage Power Supply PCB Circuit Diagram, HL-1050 (110 - 120V)
16.Low-voltage Power Supply PCB Circuit Diagram, HL-1050 (220 - 240V)
17.High-voltage Power Supply PCB Circuit Diagram
18.How to Know Drum Unit Life & Page Counter
19.Diameter / Circumference of Rollers


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