Samsung GT-I8350 Service Manual page 45

8-3-8.BT/WIFI
BT/WiFi is not working
Check BT or WiFi function
BT_WIFI_ANT is O.K
Check C800 = 3.8V
Check C809 = 1.8V
while trying to operate
BT/WIFI
Check R802 Clock = 37.4Mhz
Check R810 = 32.768Khz
Check the Status of ANT800,
L809,C841,C838,L810,DUF800,
L802,C837,C827,L807
Resolder or Replace U802,
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ON
Yes
Yes
Yes
Yes
Yes
Yes
U803
Yes
END
No
Enable BT or WiFi Function
No
Replace Rear(BT/WIFI ANT)
No
Check U501, Battery Contact and neighboring
No
Check OSC800 and neighboring Circuit
No
Check U801, U501 and neighboring Circuit
No
Resolder or Replace L807,C827,C837,
L802,DUF800,L810,C838,C841,L809,ANT800
8-17
Level 3 Repair
Circuit