Brother MFC-J3520 Service Manual

3-5
Confidential
4 SCREW TORQUE LIST
Location of screw Screw type Q’ty
Tightening torque
N•m (kgf•cm)
ADF FG wire/FB FG wire TAPTITE CUP S M3x6 1 0.40±0.10 (4±1)
Document scanner unit TAPTITE BIND B M4x12 2 0.80±0.10 (8±1)
FB hinge TAPTITE BIND B M4x12 6 0.85±0.10 (8.5±1)
ADF unit TAPTITE BIND B M4x12 2 0.85±0.05 (8.5±0.5)
ADF hinge
TAPTITE CUP B M3x10 6 0.50±0.10 (5±1)
ADF reinforcement plate TAPTITE CUP B M3x10 1 0.50±0.10 (5±1)
Upper document chute TAPTITE CUP B M3x10 5 0.50±0.10 (5±1)
Document scanner base ASSY TAPTITE CUP B M3x10 5 0.55±0.05 (5.5±0.5)
Panel holder TAPTITE BIND B M4x12 3 0.70±0.10 (7±1)
Panel grounding wire TAPTITE CUP S M3x6 1 0.40±0.10 (4±1)
Panel lower cover TAPTITE CUP B M3x10 3 0.40±0.10 (4±1)
Upper cover TAPTITE BIND B M4x12 3 0.70±0.10 (7±1)
Main PCB shield TAPTITE CUP S M3x6 2 0.40±0.10 (4±1)
Main PCB ASSY TAPTITE CUP S M3x6 2 0.40±0.10 (4±1)
MJ upper frame TAPTITE CUP S M3x6 1 0.40±0.10 (4±1)
MJ PCB ASSY TAPTITE CUP S M3x6 1 0.40±0.10 (4±1)
Lower cover TAPTITE BIND B M4x12 4 0.70±0.10 (7±1)
Lower power supply frame TAPTITE CUP S M3x8 1 0.45±0.10 (4.5±1)
Power supply PCB ASSY TAPTITE CUP S M3x6 3 0.45±0.10 (4.5±1)
Engine FG wire TAPTITE CUP S M3x6 1 0.40±0.10 (4±1)
Main PCB frame TAPTITE CUP S M3x6 1 0.45±0.10 (4.5±1)
TAPTITE CUP B M3x10 2 0.40±0.10 (4±1)
CR frame ASSY TAPTITE CUP B M3x10 2 0.60±0.10 (6±1)
TAPTITE CUP S M3x6 1 0.40±0.10 (4±1)
SCREW BIND M3x6 2 0.60±0.10 (6±1)
Motor bracket SCREW BIND M3x6 2 0.60±0.10 (6±1)
Switchback frame TAPTITE CUP B M3x12 2 0.50±0.10 (5±1)
PF encoder sensor PCB ASSY SCREW BIND M2x12 1 0.15±0.05 (1.5±0.5)
CR guide rail SCREW BIND M3x6 2 0.60±0.10 (6±1)
TAPTITE CUP B M3x10 2 0.50±0.10 (5±1)
Paper feed motor frame ASSY SCREW BIND M3x6 2 0.60±0.10 (6±1)
Frame base TAPTITE CUP B M3x10 2 0.50±0.10 (5±1)
Engine FG wire TAPTITE CUP B M3x10 1 0.50±0.10 (5±1)
DX chute TAPTITE CUP B M3x10 2 0.50±0.10 (5±1)
Lower tray frame TAPTITE CUP B M3x8 2 0.50±0.10 (5±1)

Brother MFC-J3520 Specifications

General

Print Technology	Inkjet
Duplex Printing	Yes
Fax Modem Speed	33.6 kbps
Functions	Print, Copy, Scan, Fax
Standard Paper Capacity	250 sheets
Mobile Printing	Yes
Max Print Resolution	6000 x 1200 dpi
Scanner Type	Flatbed + ADF
Max Scan Resolution	1200 x 2400 dpi
Connectivity	USB, Ethernet, Wi-Fi
Automatic Document Feeder (ADF)	Yes
Ink Cartridges	Black, Cyan, Magenta, Yellow
Print Speed (Black)	Up to 35 ppm (draft), 12 ppm (ISO)
Print Speed (Color)	27 ppm
Display	2.7" Touchscreen Color LCD