Table Of Contents - Brother HL-4040CN, HL-4050CDN, HL-4070CDW Service Manual

REGULATION............................................................................................ VIII
SAFETY INFORMATION............................................................................ XII
CHAPTER 1 TROUBLESHOOTING ........................................................ 1-1
1. INTRODUCTION .........................................................................................................1-1
1.1 Precautions ........................................................................................................................ 1-1
1.2 Initial Check........................................................................................................................ 1-1
2. ERROR CODES ..........................................................................................................1-3
2.1 Error Indication ................................................................................................................... 1-3
2.2 Error Cause and Remedy .................................................................................................. 1-5
2.2.1 Recoverable Error by User Check ........................................................................... 1-5
2.2.2 Service Call Error ................................................................................................... 1-10
3. PAPER FEEDING PROBLEMS.................................................................................1-38
3.1 No Feeding....................................................................................................................... 1-38
3.2 Double Feeding ................................................................................................................ 1-38
3.3 Paper Jam ........................................................................................................................ 1-39
3.4 Dirt on Paper .................................................................................................................... 1-40
3.5 Wrinkles............................................................................................................................ 1-40
4. IMAGE DEFECT TROUBLESHOOTING...................................................................1-41
4.1 Image Defect Examples ................................................................................................... 1-41
4.2 Diameter of Rollers .......................................................................................................... 1-42
4.3 Troubleshooting Image Defect ......................................................................................... 1-42
5. SOFTWARE SETTING PROBLEMS.........................................................................1-58
6. NETWORK PROBLEMS ...........................................................................................1-59
7. OTHERS PROBLEMS...............................................................................................1-60
CHAPTER 2 PERIODICAL MAINTENANCE........................................... 2-1
1. CONSUMABLE PARTS...............................................................................................2-1
2. PERIODICAL REPLACEMENT PARTS ......................................................................2-2
2.1 Periodical Replacement Parts............................................................................................ 2-2
2.2 Procedures to Replace Periodical Replacement Parts...................................................... 2-3
2.2.1 Fuser Unit & Fuser Filter Frame ASSY.................................................................... 2-3
2.2.2 Laser Unit................................................................................................................. 2-7
2.2.3 Paper Feeding Kit (PF Kit1, PF Kit2) ..................................................................... 2-22
2.2.4 MP Paper Feeding Kit............................................................................................ 2-27
2.3 Parts Life Reset Function................................................................................................. 2-30

TABLE OF CONTENTS

iii Confidential