Confidential
Preface
This Service Manual is intended for use by service personnel and details the specifications, 
construction, and maintenance for the Brother machines noted on the front cover. It includes 
information required for troubleshooting and service--disassembly, reassembly, and lubrication--so that 
service personnel will be able to understand equipment function, repair the equipment in a timely 
manner and order spare parts as necessary.
To perform appropriate maintenance so that the machine is always in the best possible condition for the 
customer, service personnel must adequately understand and apply this manual.
The table below shows the functional comparison between the models covered by this manual.
HL-
J6000DW
HL-
J6100DW
HL-
T4000DW
MFC-
J3530DW
MFC-
J3930DW
MFC-
J6530DW
MFC-
J6535DW
Scan --- --- --- Simplex Duplex Simplex Simplex
LCD 2.7 inch 2.7 inch 2.7 inch 2.7 inch 3.7 inch 2.7 inch 3.7 inch
Manual Feed 
Slot
--- --- --- √ --- √ ---
MP Tray √√√--- √ --- √
Lower Tray √√--- --- √ --- ---
3rd Tray --- √ --- --- --- --- ---
NFC √√--- --- √ --- ---
Document 
Size Sensor
--- --- --- --- --- --- √
Paper 
Remaining 
Sensor
√√--- --- --- --- ---
Ink Cartridge Simple Simple --- Regular Regular Regular Regular
Ink Tank --- --- √ --- --- --- ---
MFC-
J6545DW
MFC-
J6730DW
MFC-
J6930DW
MFC-
J6935DW
MFC-
J6945DW
MFC-
J6947DW
MFC-
T4500DW
Scan Simplex Simplex Duplex Duplex Duplex Duplex Simplex
LCD 3.7 inch 2.7 inch 3.7 inch 3.7 inch 3.7 inch 3.7 inch 2.7 inch
Manual Feed 
Slot
--- √ --- --- --- --- ---
MP Tray √ --- √√√√√
Lower Tray --- √√√√√---
3rd Tray --- --- --- --- --- √ ---
NFC --- --- √√√√---
Document 
Size Sensor
√ --- --- √√√---
Paper 
Remaining 
Sensor
--- --- --- √√√---
Ink Cartridge Simple Regular Regular Regular Simple Simple ---
Ink Tank --- --- --- --- --- --- √