Brother HL-L2371DN Laser Printer Manuals

Manuals and User Guides for Brother HL-L2371DN Laser Printer. We have 1 Brother HL-L2371DN Laser Printer manual available for free PDF download: Service Manual

Brother HL-L2371DN Service Manual (248 pages)

Brand: Brother | Category: Printer | Size: 23.68 MB

Service Manual
1
Copyright and License
3
Open Source Licensing Remarks
3
Table of Contents
4
Safety Information

9
- Additional Information
  13
Chapter 1 Supplemental Specifications

14
General

14
Network Connectivity

19
Service Information

19
Supplies

20
Chapter 2 Error Indications and Troubleshooting

23
Introduction

23
- Precautions
  23
- Checks before Commencing Troubleshooting
  25
Overview

27
- Cross-Section Drawing
  27
- Paper Feeding
  29
- Operation of each Part and Location of Parts
  31
- Block Diagram
  33
- Main Components
  34
Error Indications

35
- Error Codes
  36
- Error Message
  43
  - LCD Models
    43
  - LED Display (LED Models)
    49
  - Led Display When Service Call Occurs
    52
Troubleshooting

55
- Error Cause and Remedy
  55
- Troubleshooting for Paper Feeding Problems
  75
  - No Paper Feeding from Paper Tray
    75
  - No Paper Feeding from MP Tray
    76
  - No Paper Feeding from Manual Feed Slot
    77
  - Multiple Sheets of Paper Are Fed
    77
  - Paper Becomes Wrinkled
    78
  - Paper Is Fed at an Angle
    78
  - Paper Curls
    79
  - Unable to Perform 2-Sided Printing
    79
  - Paper Jam
    80
- Troubleshooting for Image Defects
  85
  - Image Defect Examples
    85
  - Troubleshooting Image Defect
    86
    
    Faulty Registration
    87
    
    Poor Fixing
    88
    
    Image Distortion
    89
    
    Vertical Streaks
    91
    
    Horizontal Stripes
    92
    
    Faint Print
    93
    
    Horizontal Lines
    98
- Troubleshooting for Software Problems
  100
  - Unable to Receive Data
    100
- Troubleshooting for Network Problems
  101
  - Cannot Make a Print through Network Connection
    101
  - Cannot Connect to Access Point
    101
- Troubleshooting for Control Panel Problems
  102
- Troubleshooting for Toner Cartridge and Drum Unit Problems
  103
- Troubleshooting for Fuser Unit Problems
  105
  - Fuser Unit Failure
    105
- Troubleshooting for Laser Unit Problems
  105
  - Laser Unit Failure
    105
- Troubleshooting for PCB Problems
  106
  - Main PCB Failure
    106
  - Full Memory
    106
- Troubleshooting for Other Problems
  107
Chapter 3 Disassembly/Reassembly

110
Safety Precautions

110
Packing

111
Screw Catalogue

112
Screw Torque List

113
Lubrication

115
Overview of Gears

116
Harness Routing

118
Disassembly Flow Chart

125
Disassembly Procedure

126
- Preparation
  126
- Back Cover
  127
- Outer Chute ASSY
  128
- Front Cover ASSY / Support Flap
  129
- Side Cover R
  132
- Fuser Cover
  133
- Inner Chute ASSY
  134
- Side Cover L
  135
- Top Cover ASSY
  136
- Fuser Unit
  140
- Low-Voltage Power Supply PCB ASSY
  142
- New Toner Sensor PCB ASSY
  144
- HVPS Flat Cable / High-Voltage Power Supply PCB ASSY
  145
- Fan
  147
- Relay PCB ASSY (for Toner Box Models and MP Models)
  148
  - Toner Box New PCB ASSY (for Models with Toner Box)
    148
- Laser Unit Flat Cable / Laser Unit
  150
- Filter
  152
- Wireless LAN PCB (Only for Wireless Network Models)
  153
- Roller Holder ASSY
  154
- Main PCB ASSY
  155
- T1 Clutch / Registration Clutch
  156
- Frame L Unit
  159
- Paper Feed Motor / Paper Feed Motor Flat Cable
  162
- Fuser Gear 64R/36R
  164
- Toner Sensor PCB ASSY (Only for Models with Toner Box)
  165
- Front Cover Sensor
  166
- Eject Sensor PCB ASSY
  167
- Registration Front/Rear Actuator Holder ASSY
  169
- Paper Feed Roller ASSY / Paper Feed Sensor PCB ASSY
  172
Chapter 4 Adjusting and Updating Settings as Required after Parts Replacement

173
If You Replace the Main Pcb Assy

173
If You Replace the Low-Voltage Power Supply Pcb Assy

181
- Reset Irregular Power Supply Detection Counter of the Low-Voltage Power Supply PCB
  181
If You Replace the Laser Unit

182
- Entering Adjusted Value of Laser Unit
  183
Chapter 5 Service Functions

185
Maintenance Mode

185
Other Service Functions

236
Chapter 6 Wiring Diagram

243
Chapter 7 Periodical Maintenance

244
Periodical Replacement Parts

244
Appendix 1 Serial Numbering System

245
Appendix 2 Deleting User Setting Information

246
Appendix 3 Installing the Maintenance Printer Driver

247

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Brother HL-L2371DN Service Manual (248 pages)

Table of Contents

Safety Information

Chapter 1 Supplemental Specifications

General

Network Connectivity

Service Information

Supplies

Chapter 2 Error Indications and Troubleshooting

Introduction

Overview

Error Indications

Troubleshooting

Chapter 3 Disassembly/Reassembly

Safety Precautions

Packing

Screw Catalogue

Screw Torque List

Lubrication

Overview of Gears

Harness Routing

Disassembly Flow Chart

Disassembly Procedure

Chapter 4 Adjusting and Updating Settings as Required after Parts Replacement

If You Replace the Main Pcb Assy

If You Replace the Low-Voltage Power Supply Pcb Assy

If You Replace the Laser Unit

Chapter 5 Service Functions

Maintenance Mode

Other Service Functions

Chapter 6 Wiring Diagram

Chapter 7 Periodical Maintenance

Periodical Replacement Parts

Appendix 1 Serial Numbering System

Appendix 2 Deleting User Setting Information

Appendix 3 Installing the Maintenance Printer Driver

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