Brother MFC-7390

Confidential
Read this manual thoroughly before maintenance work.
Keep this manual in a convenient place for quick and easy reference at all times.
August 2017
SM-FAX186
8C5K*
Ver.4
Brother Laser MFC
SERVICE MANUAL
DCP-7090/7095D/7190DN/7195DW
DCP-B7500D/B7520DW/B7530DN/B7535DW
DCP-L2510D/L2511D/L2512D/L2530DW
DCP-L2531DW/L2532DW/L2535D/L2535DW
DCP-L2536D/L2537DW/L2550DN/L2550DW
DCP-L2551DN/L2551DW/L2552DN
HL-L2390DW/L2395DW
MFC-7390/7490D/7890DN/7895DW
MFC-B7700D/B7715DW/B7720DN
MFC-L2690DW/L2710DN/L2710DW/L2712DN
MFC-L2712DW/L2713DW/L2715D/L2715DW
MFC-L2716D/L2716DW/L2717DW
MFC-L2730DW/L2732DW/L2750DW/L2750DWXL
MFC-L2751DW/L2752DW/L2770DW/L2771DW
MODEL

Brother MFC-7390 Specifications

General

Brand	Brother
Model	MFC-7390
Category	All in One Printer
Language	English

Summary

SAFETY INFORMATION

CHAPTER 1 SUPPLEMENTAL SPECIFICATIONS

3. SERVICE INFORMATION

4. SUPPLIES

CHAPTER 2 ERROR INDICATIONS AND TROUBLESHOOTING

3. ERROR INDICATIONS

Lists error codes, their descriptions, and reference pages for troubleshooting.

4. TROUBLESHOOTING

Detailed causes and remedies for various errors and problems.

CHAPTER 3 DISASSEMBLYREASSEMBLY

1. SAFETY PRECAUTIONS

Important warnings and precautions to follow before disassembly.

8. DISASSEMBLY FLOW CHART

9. DISASSEMBLY PROCEDURE

Step-by-step instructions for disassembling various parts and components.

CHAPTER 4 ADJUSTING AND UPDATING SETTINGS AS REQUIRED AFTER PARTS REPLACEMENT

1. IF YOU REPLACE THE MAIN PCB ASSY

Procedures for installing firmware and setting parameters after replacing the main PCB.

2. IF YOU REPLACE THE LOW-VOLTAGE POWER SUPPLY PCB ASSY

Steps for resetting irregular power supply detection counter after replacing the LVPS PCB.

3. IF YOU REPLACE THE LASER UNIT

4. IF YOU REPLACE THE PANEL UNIT OR PANEL CONTROL PCB

5. IF YOU REPLACE THE ADF UNIT, FIRST SIDE CIS UNIT, SECOND SIDE CIS UNIT OR DOCUMENT SCANNER UNIT

CHAPTER 5 SERVICE FUNCTIONS

1. FUNCTION CODE

Overview of maintenance mode functions and how to enter it.

1.2 List of Maintenance Mode Functions

Comprehensive list of available maintenance mode functions and their references.

1.3 Details of Maintenance Mode Functions

Detailed explanations of specific maintenance mode functions and their operating procedures.

APPENDIX 3 INSTALLING THE MAINTENANCE PRINTER DRIVER

Windows 7 Windows 8 Windows 8.1 Windows 10