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Flow Chart of Troubleshooting
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9-23
9-15. WCDMA Receiver
C131
>= -53dBm
Resolder RFC100(RF CN)
END
No
Yes
RX ON
RF input : CH center freq : +67.7kHz
Amp : -50dBm
L336
>= -60dBm
Yes
Yes
Yes
No
C120=2.5V,
C127, C128= 1.5V
C121 =0V
C353
>=2.75V
Resolder
U200(TRANCEIVER)
Yes
No
No
Check U402(PMIC)
Resolder DUF302(Duplexer)
Check U402(PMIC)
C319
>= -50dBm
Resolder U301(LNA)
C237,C239
>= -53dBm
Resolder F202(SAW)
C118
>= -60dBm
Resolder RFS100(ASM)