Brother MFC-J3520 Service Manual

Confidential
2-39

Error Code 67
Switchback sensor detects no paper tray 1 state.
User Check
- Set paper tray1.
 Error Code 75
Head/carriage unit cannot shift to head capping position.
Error Code 76
Head/carriage unit cannot shift to head uncapping position.
User Check
Remove the jammed paper in platen part and maintenance unit part.
Paper tray not detected LCD
Step Cause Solution
1 Switchback actuator caught on
the surrounding parts
Set the switchback frame ASSY into place.
2 Switchback sensor harness
connection failure
Reconnect the switchback sensor harness.
3 Outer paper guide wear/
defective
Replace the outer paper guide.
4 Paper tray 1 defective Replace the paper tray 1.
5 Main PCB defective Replace the main PCB ASSY.
Unable to Print 75 LCD
Unable to Print 76 LCD
Step Cause Solution
1 CR encoder strip out of place Set the CR encoder strip into place.
2 Foreign materials in the
maintenance unit
Remove foreign materials.
3 Foreign materials in the engine
unit
Remove foreign materials.
4 Carriage motor defective Replace the carriage motor ASSY.
5 Maintenance unit defective Replace the maintenance unit.
6 Main PCB defective Replace the main PCB ASSY.

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