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8. Level 3 Repair
Check component
soldering status U3000
8-4-31. GSM1800/1900, WCDMA 1/2/4, LTE B1/2/3/4/7/25/32/66 DRX
END
Resolder or change
U12029, ANT5001, ANT5007, V5007
Resolder or change
F2000
Resolder or change
C2017, C2015, L2017, C2020
Resolder or change
U3000
Resolder or change
UCP5000
No
No
No
No
No
No
NO
NO
Yes
Yes
Yes
Yes
Yes
Yes
Receiver is O.K?
Resolder or change
C2027, C2028, L2027, C2030,
L2033, L2028
No
Yes
Yes
Check U12029
≤
-65dBm ?
Check L2018
≤
-65dBm ?
Check component
soldering status ok?
F2000
Check C2020
≤
-65dBm ?
Check component soldering status OK at
FEM2001
Check C2028, L2028
≤
-65dBm ?
Resolder or change
L2018, L2020, C2021, L2019
Resolder or change
FEM2001
NORMAL CONDITION
Catch the channel?