Brother GT-3 Series Service Manual page 330

<Note>
The LAN initial settings may not be properly assigned in the supply Main PCB; the firmware version is former
than 2.10 in the production process. Because of the undefined settings, the error 4501 may occur when you
replace the Main PCB and upgrade the firmware to the current version. Assign proper IP address when the
customer uses LAN connection. If the customer does not use LAN connection, follow the troubleshooting
below; input the "0" to all.
Execute GT-3 Maintenance in [Brother GT-3 Tools] and select [ IP Address Assignment ].
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Assign all the settings as shown below and select [ Next ] to finish the assignment.
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GT-3 Series
6. Replacing Parts
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