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8. Level 3 Repair
NORMAL CONDITION
Catch the channel?
Check soldering
status(U2009) and the
voltage at
C2008,C2032 =1.0V &
C2013,C2017=1.8V &
C2018=1.2V
8-4-41. GSM 1800/1900 TX
Yes
No
No
Check RFS 1000
about
≥
23dBm?
Check the ANT, Sub PBA
Yes
Check L1000
≥
23dBm
No
Resolder or change
RFS1000, F1000, C1095, C1002,
C1080
Yes
Check C1067
≥
23dBm
No
Resolder or change
L1000, U1007
Yes
Check component
soldering status ok?
U1014, C1065, C1066
Resolder or change
U1014, C1065, C1066
No
Receiver is OK?
Resolder or change
UCP500
No
Yes
Yes
Resolder or change
U2009
No
END
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