Brother MFC-3340CN User Manual

9-27 Confidential
9.2.4 Troubleshooting based on problem type
[ 1 ] Control panel problems
Problem Check:
(1) LCD shows nothing. • Panel-main harness
• Control panel PCB
• Power supply PCB
•Main PCB
(2) Control panel inoperative. • Panel-main harness
• Control panel PCB
• Rubber keypad
•Main PCB
[ 2 ] Telephone problems
Problem Check:
(1) No phone call can be made. • Rubber keypad
• Control panel PCB
•Main PCB
• MJ PCB
(2) Speed dialing will not work. • Ordinary dialing function (other than the speed and one-touch
dialing)
If it works normally, check the main PCB; if not, refer to item
(1) above.
(3) Dial does not switch between
tone and pulse.
•Main PCB
(4) Telephone does not ring. • Speaker
•Main PCB
• MJ PCB

Brother MFC-3340CN Specifications

General

Type	Multifunction
Functions	Print, Copy, Scan, Fax
Printing Technology	Inkjet
Print Speed (Black)	22 ppm
Fax Modem Speed	33.6 Kbps
Fax Transmission Speed	Approx. 3 seconds per page
Memory	32 MB
Display	LCD
Max Copying Resolution	600 x 600 dpi
Max Printing Resolution	Up to 1200 x 6000 dpi
Scanning Resolution	1200 x 1200 dpi
Connectivity	USB, Ethernet
PC Connectivity	USB
Media Type	Plain Paper, Envelopes