Network Problems - Brother HL-4040CN, HL-4050CDN, HL-4070CDW Service Manual

6.

NETWORK PROBLEMS

User Check
- Check the descriptions in the network user's guide.
- Try resetting the factory settings.
Step
1 Wireless LAN
PCB failure
(HL-4070CDW)
2
Main PCB failure
Cause
Is the problem solved
after replacing the
wireless LAN PCB
ASSY?
Is the problem solved
after replacing the main
PCB ASSY?
Check
Result
Yes
Yes
1-59
Remedy
Replace the wireless
LAN PCB ASSY.
Replace the main PCB
ASSY.
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