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8. Level 3 Repair
8-4-36. LTE B1/4 , WCDMA B1/B4 DRx
Check component soldering status OK at
U2002?
Resolder or change
U2002
NO
YES
Check L2029
≥
-65dBm ?
Resolder or change
L2029 or C2038 or C2047
NO
YES
Check component soldering status OK at
U2031 ?
Resolder or change
U2031
NO
YES
Check C2036
≥
-65dBm ?
Resolder or change
VR2002 or L2033 or C2036 or C2122
YES
NO
Check C2031 or L2042
≥
-65dBm ?
Resolder or change
C2031 or L2042
NO
YES
Receiver is O.K?
END
Resolder or change
U2029
YES
NO
YES
Check status OK at mechanical material
Change
mechanical material
NO