Brother HL-720 - B/W Laser Printer Manuals

Manuals and User Guides for Brother HL-720 - B/W Laser Printer. We have 3 Brother HL-720 - B/W Laser Printer manuals available for free PDF download: Service Manual, User Manual, Quick Setup Manual

Brother HL-720 - B/W Laser Printer Service Manual (154 pages)

Service Manual

Brand: Brother | Category: Printer | Size: 3.21 MB

Table of Contents

4
- Chapter I Features and Specifications
  
  3
  - Table of Contents
    4
  - Features
    7
    
    Printing
    7
    
    Electrical and Mechanical
    12
    
    Paper
    13
    
    Paper Specification
    13
    
    Print Delivery
    13
    
    Effective Printing Area
    14
    
    CDRH Regulations (110 -120V Model Only
    16
    
    Laser Safety (110 - 120V Model Only
    16
    
    Caution for Laser Product
    17
- Chapter II Theory of Operation
  
  18
  - Electronics
    18
    
    General Block Diagram
    18
    
    Main PCB Block Diagram
    20
    
    CPU Core
    22
    
    Main PCB
    22
    
    Asic
    24
    
    Dram
    30
    
    Rom
    30
    
    Optional RAM
    32
    
    Eeprom
    33
    
    Optional Serial I/O
    33
    
    Reset Circuit
    34
    
    CDCC I/O
    35
    
    Engine I/O
    36
    
    Paper Feed Motor Drive Circuit
    38
    
    Panel Sensor PCB
    39
    
    Power Supply
    40
  - Mechanics
    41
    
    Overview of Printing Mechanism
    41
    
    Paper Registration
    42
    
    Paper Supply
    42
    
    Paper Transfer
    42
    
    Paper Eject
    43
    
    Cover Sensor
    44
    
    Sensors
    44
    
    Toner Empty Sensor
    44
    
    Charging
    45
    
    Cleaner Roller
    45
    
    Developer Roller
    45
    
    Drum Unit
    45
    
    Erase Lamp
    45
    
    Photosensitive Drum
    45
    
    Primary Charger
    45
    
    Print Process
    45
    
    Transfer Roller
    45
    
    Exposure Stage
    46
    
    Developing
    47
    
    Transfer
    47
    
    Drum Cleaning Stage
    48
    
    Erasing Stage
    48
    
    Drum Unit
    50
    
    Top Cover
    51
    
    Multi-Purpose Paper Tray Assy
    52
    
    Fixing Unit
    53
    
    Main PCB Assy
    55
    
    Scanner Unit
    55
    
    Base Plate Assy
    56
    
    Panel Sensor PCB Assy
    56
    
    High-Voltage Power Supply PCB Assy
    57
    
    Low-Voltage Power Supply PCB Assy
    57
    
    Drive Unit
    58
    
    Fan Motor
    58
    
    Gears and Solenoid
    59
    
    Main Motor Assy and Motor Heat Sink
    59
    
    Paper Eject Tray Assy
    60
    
    Tray Extension
    60
- Chapter IV Troubleshooting
  
  62
  - Introduction
    62
    
    Initial Check
    62
    
    Basic Procedure
    63
  - Image Defects
    64
    
    Image Defect Examples
    64
    
    Troubleshooting Image Defects
    65
  - Troubleshooting of Malfunctions
    73
  - Inspection Mode
    78
    
    Incorporated Inspection Modes
    78
    
    Error Codes
    80
    
    Connection Diagram
    81
    
    Connection Diagram, HL-730/730Plus
    82
    
    A. Main PCB Circuit Diagram (1/2), HL-720
    83
    
    B. Main PCB Circuit Diagram (2/2), HL-720
    84
    
    High-Voltage Power Supply PCB Circuit Diagram
    90
    
    Serial No. Descriptions
    91
    
    Service Manual
    93
Table of Contents

96
- 3A. Main PCB Circuit Diagram (1/2
  98
- Panel/Sensor PCB Circuit Diagram
  98
- Features
  99
- Specifications
  101
  - Functions
    101
  - Printing
    101
  - Electrical and Mechanical
    102
- Chapter II Theory of Operation
  
  103
  - Electronics
    103
    
    General Block Diagram
    103
    
    Main PCB Block Diagram
    104
    
    CPU Core
    105
    
    Main PCB
    105
    
    Asic
    106
    
    Rom
    109
    
    Dram
    110
    
    Optional RAM
    111
    
    Eeprom
    112
    
    Optional Serial I/O
    112
    
    CDCC I/O
    113
    
    Reset Circuit
    113
- Chapter III Disassembly and Reassembly
  
  116
  - Safety Precautions
    116
  - Disassembling Procedure
    118
    
    Drum Unit
    118
    
    Top Cover
    118
    
    Multi-Purpose Paper Tray Assy
    119
    
    Fixing Unit
    120
    
    Main PCB Assy
    122
    
    Scanner Unit
    122
    
    Base Plate Assy
    123
    
    Panel Sensor PCB Assy
    123
    
    High-Voltage Power Supply PCB Assy
    124
    
    Low-Voltage Power Supply PCB Assy
    124
    
    Drive Unit
    125
    
    Fan Motor
    125
    
    Gears and Solenoid
    126
    
    Main Motor Assy and Motor Heat Sink
    126
    
    Paper Eject Tray Assy
    127
    
    Tray Extension
    127
    
    Core
    128
  - Packing
    129
- Chapter IV Troubleshooting
  
  130
  - Inspection Mode
    130
    
    Error Codes
    132
  - Connection Diagram
    133
  - Main PCB Circuit Diagram (2/3
    134
  - Main PCB Circuit Diagram (3/3
    134
  - Low-Voltage Power Supply PCB Circuit Diagram 230V
    137
  - Low-Voltage Power Supply PCB Circuit Diagram 115V
    138
  - Parts Reference List
    139
Table of Contents

141
- Pcb Silk-Screen Printing Drawing
  142
- General Drawing
  143
- Power Cords & Packing Drawing
  144
- Frame / Drive
  145
- Scanner
  145
- Fixing Unit
  146
- Paper Tray
  146
- Cabinet
  147
- Main Pcb
  148
- Panel / Sensor Pcb
  148
- High-Voltage Power Supply Unit
  149
- Low-Voltage Power Supply Unit
  149
- 10. Power Cords
  150
- 11. Packing
  151
- Documents
  152
- 13 . Adjusting Tool Kit
  154

Brother HL-720 - B/W Laser Printer User Manual (84 pages)

Users Manual - English

Brand: Brother | Category: Printer | Size: 1.14 MB

Shipment of the Printer
2
Compilation and Publication Notice
4
To Use the Printer Safely
5
Table of Contents
6
Regulations

8
Chapter 1 Introduction

13
- About the Guidebooks
  13
  - Finding out How to Use the Printer
    13
- About Your Printer
  14
  - Printer Overview
    14
  - System Requirements
    15
  - Features
    15
- Operating and Storage Environment
  18
  - Power Supply
    18
  - Environment
    18
Chapter 2 Paper Handling

21
Chapter 3 Control Panel

31
- Lamps and Switch
  31
  - Ready (Paper) Lamp
    31
  - Data (Toner) Lamp
    32
  - Drum Lamp
    32
  - Alarm Lamp
    32
  - Switch
    33
  - Other Control Features
    33
    
    Sleep Mode
    33
    
    Test Print Mode
    34
Chapter 4 Options

35
- SERIAL INTERFACE BOARD RS100M (for HL-730 Series Only)
  35
- Memory Board
  40
Chapter 5 Maintenance

41
Chapter 6 Troubleshooting

57
- Alarm Indications at a Glance
  57
  - Operator Calls
    57
  - Service Calls
    60
- Paper Jams
  61
- Q & a
  64
Appendix A Printer Specifications

71
Index

81

Brother HL-720 - B/W Laser Printer Quick Setup Manual (17 pages)

Quick Setup Guide - English

Brand: Brother | Category: Printer | Size: 0.31 MB

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Brother HL-720 - B/W Laser Printer Manuals

Brother HL-720 - B/W Laser Printer Service Manual (154 pages)

Table of Contents

Table of Contents

Chapter I Features and Specifications

Chapter II Theory of Operation

Chapter IV Troubleshooting

Table of Contents

Chapter II Theory of Operation

Chapter III Disassembly and Reassembly

Chapter IV Troubleshooting

Table of Contents

Brother HL-720 - B/W Laser Printer User Manual (84 pages)

Table of Contents

Regulations

Chapter 1 Introduction

Chapter 2 Paper Handling

Chapter 3 Control Panel

Chapter 4 Options

Chapter 5 Maintenance

Chapter 6 Troubleshooting

Appendix A Printer Specifications

Index

Brother HL-720 - B/W Laser Printer Quick Setup Manual (17 pages)

Table of Contents

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