Brother MFC-7450

1-46
Confidential
8. NETWORK PROBLEMS
User Check
• Check the descriptions in the network user’s guide.
• Try resetting the factory settings.
Step Cause Check
Result Remedy
1
Wireless LAN
PCB failure
(MFC7840W)
Is the problem solved
after replacing the
wireless LAN PCB
ASSY?
Ye s
Replace the wireless LAN
PCB ASSY.
2
Main PCB failure Is the problem solved
after replacing the main
PCB ASSY?
Ye s
Replace the main PCB
ASSY.