Brother MFC-9125CN - Circuit Diagrams

Brother MFC-9125CN

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Confidential

8-1

1. CIRCUIT DIAGRAMS

■ High-voltage Power Supply PCB Circuit Diagram SYS HITEK: SPH-8N35 (1/3)

Table of Contents

Chapter 1 Specifications12
Chapter 2 Theory of Operation54
Chapter 3 Error Indication and Troubleshooting91
Chapter 4 Periodical Maintenance202
- Default Chapter203
- CHAPTER 5 Disassembly and Assembly224
Chapter 5 Disassembly and Assembly225
Chapter 6 Adjustments and Updating of Settings, Required after Parts Replacement441
- Default Chapter442
  - If You Replace the Main Pcb442
  - If You Replace the Document Scanner Unit455
    - Acquiring White Level Data and Setting CIS Scanner Area455
- CHAPTER 7 Service Functions456
  - If You Replace the Registration Sensor Holder Assy455
    - Sensitivity Adjustment of Density Sensor (Maintenance Mode: Code 72)455
  - If You Replace the Wireless Lan Pcb (Wireless Lan Model Only)455
    - Acquiring MAC Address (Ethernet Address) from Main PCB455
Chapter 7 Service Functions457
- Maintenance Mode459
- Other Service Functions514

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