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9-2-5. WCDMA Band1 RX
NORMAL CONDITION
catch the channel?
pin2 ≥ -65dBm ?
pin20 ≥ -65dBm ?
WCDMA Receiver is O.K?
YES
U100 CHECK
YES
U100 CHECK
YES
U100 CHECK
pin 7 : 2.9V ?
YES
NO
U100
pin20 Vp-p
: 120mV ?
YES
END
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NO
CHECK soldered
ANT contact, C114, C115
NO
U100, RFS100
resolder or change
NO
U100
resolder or change
NO
U100, UCP300
change or resolder
U203, UCP300
resolder or change
NO
WCDMA RX path component
resolder or change
9-15
Flow Chart of Troubleshooting
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