Brother HL-L9300CDW Service Manual page 133

4.5 Troubleshooting for Network Problems
4.5.1 Cannot make a print through network connection
< User Check >
- Check the descriptions in the network User's guide.
- Check the network connection.
- Perform network reset. (Refer to User's guide.)
- Check the LAN cable.
Step
1
2
3
Cause
Connection failure of the
wireless LAN PCB harness
Wireless LAN PCB failure
LAN terminal pin deformation
Main PCB failure
Reconnect the wireless LAN PCB harness.
Replace the wireless LAN PCB ASSY.
Replace the main PCB ASSY.
2-113
Remedy
Confidential