Brother P-touch QL-710W - Wi-Fi Interface Malfunction

IV - 11
[6] Wi-Fi interface malfunction.
N
The interface malfunction.
(Wi-Fi)
Is the Wi-Fi LED
turned on?
Y
The Wi-Fi LED is not
turned on even by pressing
the Wi-Fi button.
Y
Does the main PCB
ASSY break down?
N
N
Is the harness
of the Wi-Fi PCB
connected?
Connect the harness.
N
Replace the
SB PCB ASSY.
Y
Replace the main PCB ASSY.
Y
Replace the main PCB ASSY.