Brother 1240 Manuals

Manuals and User Guides for Brother 1240. We have 1 Brother 1240 manual available for free PDF download: Service Manual

Brother 1240 Service Manual

Brother 1240 Service Manual (243 pages)

Brother Laser Printer SERVICE MANUAL HL-1030, 1240, 1250, 1270N

Brand: Brother | Category: Printer | Size: 5.21 MB

Table of Contents

4
Table of Contents
- - 1
    Service Manual
  - 9
    Regulation
  - 11
    Safety Information
- 13
  Chapter 1 General
  - 13
    Features
  - 16
    Overview
  - 17
    Specifications
    - 17
      Printing
    - 18
      Functions
    - 19
      Electrical and Mechanical
    - 20
      Network (For HL-1270N Only)
    - 20
      Paper
      - 20
        Feedable Paper
      - 22
        Paper Cassette Capacity
      - 22
        Print Delivery
    - 23
      Printing Area
      - 23
        Effective Printing Area
      - 23
        Print Guaranteed Area
- 25
  Chapter 2 Installation and Basic Operation
- 43
  Chapter 3 Theory of Operation
  - 43
    Electronics
    - 43
      General Block Diagram
    - 46
      Main PCB Block Diagram
    - 49
      Main PCB
      - 49
        Asic
      - 52
        Rom
      - 54
        Flash ROM
      - 54
        Dram
      - 56
        Optional RAM
      - 57
        Optional Serial I/O
      - 57
        PCI Bus
      - 58
        Eeprom
      - 58
        Reset Circuit
      - 59
        Engine I/O
    - 60
      Engine PCB
    - 60
      Br-Net PCB (For HL-1270 Only)
    - 61
      Power Supply
      - 61
        Low-Voltage Power Supply
      - 62
        High-Voltage Power Supply
  - 63
    Mechanics
    - 63
      Overview of Printing Mechanism
    - 65
      Paper Transfer
      - 65
        Paper Supply
      - 65
        Paper Registration
      - 66
        Paper Eject
    - 66
      Sensors
      - 66
        Cover Sensors a and B
      - 67
        Toner Sensor
    - 67
      Drum Unit
      - 67
        Photosensitive Drum
      - 67
        Primary Charger
      - 67
        Transfer Roller
      - 67
        Cleaner
    - 68
      Print Process
      - 68
        Charging
      - 68
        Exposure Stage
      - 69
        Developing
      - 70
        Transfer
      - 70
        Fixing Stage
- 71
  Chapter 4 Disassembly and Re-Assembly
  - 71
    Safety Precautions
  - 72
    Disassembly Flow
  - 73
    Disassembly Procedure
    - 73
      AC Cord
    - 73
      Drum Unit
    - 74
      Paper Cassette
    - 80
      Network Board (For HL-1270N Only)
    - 81
      Front Cover
    - 82
      Top Cover
    - 83
      Main Cover
    - 85
      Laser Unit
    - 86
      Drive Unit
    - 88
      Fixing Unit
    - 99
      Base Plate
    - 101
      Main PCB ASSY
    - 101
      Lower Tray Relay PCB ASSY (For HL-1250/1270N Only)
    - 102
      Low-Voltage Power Supply PCB ASSY
    - 104
      Engine PCB ASSY / High-Voltage Power Supply PCB ASSY
    - 106
      Panel PCB ASSY
    - 106
      Solenoid ASSY
    - 109
      Fan Motor ASSY
    - 110
      Toner Sensor PCB ASSY (Light Emission)
    - 110
      Toner Sensor PCB ASSY (Light Reception)
    - 111
      Paper Pick-Up Roller ASSY
    - 112
      Paper Feed Roller ASSY
    - 113
      Outer Chute 1
  - 114
    Packing
- 115
  Chapter 5 Periodic Maintenance
  - 115
    Consumable Parts
    - 115
      Drum Unit
    - 116
      Toner Cartridge
  - 118
    Periodical Replacement Parts
  - 119
    Periodical Cleaning
    - 119
      Cleaning the Printer Exterior
    - 119
      Cleaning the Drum Unit
    - 120
      Cleaning the Scanner Window
    - 120
      Cleaning the Electrical Terminals
  - 121
    Mtbf / Mttr
- 123
  Chapter 6 Troubleshooting
  - 123
    Introduction
    - 123
      Initial Check
    - 124
      Warnings for Maintenance Work
    - 125
      Identify the Problem
  - 126
    Operator Calls & Service Calls
    - 126
      Operator Calls
    - 126
      Service Calls
  - 128
    Error Messages
    - 128
      Error Messages in the Status Monitor
    - 130
      Error Message Printouts
  - 131
    Paper Problems
    - 131
      Paper Load Problems
    - 132
      Paper Jams
      - 132
        Clearing the Jammed Paper
      - 133
        Causes & Countermeasures
    - 134
      Paper Feeding Problems
  - 136
    Software Setting Problems
  - 140
    Malfunctions
  - 145
    Image Defects
    - 145
      Image Defect Examples
    - 146
      Troubleshooting Image Defect
    - 163
      Location of Grounding Contacts
      - 163
        Drum Unit
      - 163
        Printer Body & Paper Cassette
  - 164
    Incorrect Printout
  - 167
    Network Problem (For Hl-1270N Only)
    - 167
      Installation Problem
    - 168
      Intermittent Problem
    - 169
      TCP/IP Troubleshooting
    - 169
      UNIX Troubleshooting
    - 170
      Windows NT/LAN Server (TCP/IP) Troubleshooting
    - 170
      Windows 95/98 Peer to Peer Print (LPR) Troubleshooting
    - 171
      Windows 95/98 (Or Later) Peer to Peer (HP Jetadmin Compatible Method) Troubleshooting
    - 171
      Windows 95/98/NT 4.0 Peer to Peer Print (Netbios) Troubleshooting
    - 171
      Internet Print (TCP/IP) Troubleshooting
    - 172
      Novell Netware Troubleshooting
    - 172
      Appletalk Troubleshooting
    - 173
      Apple TCP/IP Printing (System 8.6 or Later)
    - 173
      Web Browser Troubleshooting (TCP/IP)
  - 174
    Inspection Mode
    - 174
      Test Print Mode
    - 175
      Inspection Mode
  - 179
    Serial No. Descriptions
  - 181
    Diameter / Circumference of Rollers
  - 182
    Print Speeds with Various Settings
  - 183
    How to Know Drum Unit Life & Page Counter
  - 189
    How to Use the Self-Diagnostics Tools
  - 193
    Nvram Default Value
  - 194
    Paper Cassette Information (For Europe Only
  - 195
    Connection Diagram, Hl-1030/1240
  - 196
    Connection Diagram, Hl-1250
  - 197
    Connection Diagram, Hl-1270N
  - 198
    Main Pcb Circuit Diagram, Hl-1030/1240 (1/2
  - 199
    Main Pcb Circuit Diagram, Hl-1030/1240 (2/2
  - 200
    Main Pcb Circuit Diagram, Hl-1250/1270N (1/5
  - 201
    Main Pcb Circuit Diagram, Hl-1250/1270N (2/5
  - 202
    Main Pcb Circuit Diagram, Hl-1250/1270N (3/5
  - 203
    Main Pcb Circuit Diagram, Hl-1250/1270N (4/5
  - 204
    Main Pcb Circuit Diagram, Hl-1250/1270N (5/5
  - 205
    Engine Pcb Circuit Diagram (Old
  - 206
    Engine Pcb Circuit Diagram (New
  - 207
    Network Board Circuit Diagram
  - 208
    Low-Voltage Power Supply Pcb Circuit Diagram (110 - 120V)
  - 209
    Low-Voltage Power Supply Pcb Circuit Diagram (220 - 240V)
  - 210
    High-Voltage Power Supply Pcb Circuit Diagram (Old
  - 211
    High-Voltage Power Supply Pcb Circuit Diagram (New
  - 212
    Differences Between Old & New Versions of Hvps & Engine Pcb
    - 219
      Parts Reference List
221
Table of Contents
- 222
  Frame / Drive Unit
- 222
  Laser Unit
- 224
  Paper Feeder
- 226
  Fixing Unit
- 230
  Paper Cassette
- 231
  Covers
- 234
  Main Pcb
- 235
  Engine Pcb
- 235
  Low-Voltage Power Supply Pcb
- 237
  Ac Cords
- 237
  High-Voltage Power Supply Pcb
- 239
  Accessories
- 241
  Network Board
- 241
  Packing Materials
- 243
  Adjusting Tool

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