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8. Level 3 Repair
Check L1004
≤
-
65dBm
L1002
≤
-65dBm (G900,
B5,8,17,20,28)
L1050
≤
-65dBm (B7)
L1048
≤
-65dBm (B38)
8-4-20. RX(GSM 900/ WCDMA 5 / LTE 5,7,8,17,20,28,38)
Check condition
C3024=1.2V
C3026=1.8V
Yes
Resolder or replace
U3002
Resolder or replace
U3001
Yes
Yes
Yes
No
Resolder or replace
C1148, L1018, F1000
Check C1148=2.8V
Faulty part
Resolder or replace
Resolder or replace
L1004, C1006,
RFS1000,CPL1000
Check
B5 L1033
B7 L1056
B8&GSM900 L1022
B17 L1028
B20 L1061
B28 L1043
B38 L1049
≥
-65dBm
Resolder or replace
UCP300
Yes
END
No
No
No
No
No
Check condition
Yes
Yes
No
Resolder or replace
L1002, CPL1002
(G900,B5,8,17,20,28)
L1050, L1047, C1123, U1021,
CPL1002 (B7)
L1048, L1047, C1123, U1021,
CPL1002 (B38)