LG 86SM9400PTA Service Manual page 48

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Standard Repair Process
Error
symptom
3.WiFi operating error
Check the
INSTART menu
D. Function error
WiFi operating checking
☞A4
Wi-Fi Mac
N
value is "NG"?
Y
☞A15
Check & Repair
Wifi cable
connection
☞A4
N
Wi-Fi Mac
value is "NG"?
Y
Change the Wifi
assy
☞A15
Check the WiFi wafer
+3.5V_WiFi
Close
13
Established
date
Revised date
N
Normal
Replace
Voltage?
Main B/D
Y
Close
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