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without Samsung’s written authorization is strictly prohibited.
8. Level 3 Repair
Check soldering
status(U2102) and the
voltage at
C2081,C2003,C2077=0.8V,
C2002=0.875V,
C2008,C2007=1.7V,
C2086,C2087=1.2V
8-4-30. CDMA BC0/10, GSM 850/900, WCDMA B5/8, LTE B5/8/12/13/14/18/19/
20/26/28/29/71 DRX
Receiver is O.K?
END
Resolder or change
ANT2001, ANT2002, V2007
Resolder or change
C2094
Resolder or change
U2091
Resolder or change
UCP500
No
No
No
No
No
No
NO
Yes
Yes
Yes
Yes
Yes
Resolder or change
U2102
No
Yes
Yes
NORMAL CONDITION
Catch the channel?
Check V2007
≤
-65dBm ?
Check C2316
≤
-65dBm ?
Check C2094
≤
-65dBm ?
Check component soldering status OK at
U2091?
Check C2119
≤
-65dBm ?
Resolder or change
L2022, C2316
Resolder or change
U2091, C2119