Samsung GT-i9001 Service Manual page 56

8-3-9. BT/WIFI
BT/WiFi is not working
Check BT or WiFi function
BT_WIFI_ANT is O.K
Check C200 = 3.8V
Check C201 = 1.8V
while trying to operate
Check R200 Clock = 38.4Mhz
Check OSC501 = 32.768Khz
Check the Status of ANT200,
L200, C203, C206, C207
Resolder or Replace U200
ON
Yes
Yes
BT/WIFI
Yes
Yes
Yes
Yes
Yes
END
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No
Enable BT or WiFi Function
No
Replace BT/WIFI ANT in rear
No Check U501, Battery Contact and neighboring
No
Check OSC 200 and neighboring Circuit
No
Check OSC501, U501 and neighboring Circuit
No
Resolder or Replace L200, C203, C206,
C207, ANT200
8-27
Level 3 Repair
Circuit