Brother HL-5590DN Service Manual

2-112
Confidential
4.5 Troubleshooting for Network Problems
4.5.1 Cannot print via network connection
4.5.2 Cannot connect to access point
4.6 Troubleshooting for Control Panel Problems
4.6.1 Nothing is displayed on the LCD
<User Check>
- Check the relevant section in the Network Setting Guide.
- Check the network connection.
- Reset the network. (Refer to the online User's Guide.)
- Check the LAN cable.
Step Cause Remedy
1 Wireless LAN PCB failure Replace the wireless LAN PCB.
2
Deformed LAN terminal pin
Main PCB failure
Replace the main PCB ASSY.
<User Check>
- Check the wireless LAN settings.
- Check the access point settings.
- Change the machine installation location.
- Set the access point manually.
Step Cause Remedy
1 Wireless LAN PCB failure Replace the wireless LAN PCB.
2 Main PCB failure Replace the main PCB ASSY.
<User Check>
- Turn the power switch OFF and then ON again.
Step Cause Remedy
1
Rubber key attachment failure (Non
touch panel models only)
Reattach the rubber key.
2
Connection failure of the panel PCB flat
cable (Non touch panel models only)
Reconnect the panel PCB flat cable.
3
Connection failure of the low-voltage
power supply harness
Reconnect the low-voltage power supply
harness.
4 AC cord failure Replace the AC cord.
5 LCD relay PCB failure Replace the LCD relay PCB ASSY.
6
Panel PCB failure (Non touch panel
models only)
Replace the panel PCB ASSY.
7
LCD failure (Non touch panel
models only)
Replace the LCD.
8
Panel PCB failure (Touch panel
models only)
Replace the LCD panel ASSY.
9
Low-voltage power supply PCB
failure
Replace the low-voltage power supply PCB
ASSY.
10 Main PCB failure Replace the main PCB ASSY.

Brother HL-5590DN Specifications

General

Brand	Brother
Model	HL-5590DN
Category	Printer
Language	English