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8. Level 3 Repair
NORMAL CONDITION
Catch the channel?
Check component soldering
status L1061, U3000
8-4-34. GSM 1800/1900 TX
Yes
No
No
Check RFS1000
about
≥ 23dBm?
Check the ANT1001
Yes
Check C1005
≥ 23dBm
No
Resolder or change
RFS1000, C1005, C1004, L1001
Yes
Check L1037
≥ 23dBm
No
Resolder or change
F1000, L1037, C1055
Yes
Check component
soldering status ok?
U1006
Resolder or change
U1006
No
Receiver is OK?
Resolder or change
UCP5000
No
Yes
Yes
Resolder or change
L1061, C1087, C1085, U3000
No
END
Yes
Check component
soldering status ok?
L1060
Resolder or change
L1060, C1084, PAM1001