Samsung SGH-i560V Service Manual page 77

9-2-2. Abnormal WCDMA Tx Operation
TX ON
PWR=23dBm
Target
Check
TX Module Output
U202 PIN8
≥ 10dBm
Check
TX Module Input
U202 PIN10
≥ 8dBm
Check
Duplexer Input
DUF300 PIN1
≥ 5dBm
Check
Coupler Input
F301 PIN2
≥ 5dBm
Check
PAM Input
U303 PIN8
≥ -15dBm
Check
Transceiver Input
U201 PIN59
≥ -20dBm
Check U201, UCP400
END
YES
NO
YES
NO
YES
NO
YES
NO
YES
NO
YES
NO
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Resolder RFS200,
L203,C236,L219
Check U202
PIN28=H, PIN27=L
PIN1=L
YES
Resolder DUF300,
L312, C303,C332
Resolder or change F301,
R317, R302, R303,
R306, R307
Resolder or Change
U303, L310, C339
Resolder or Change
C211, L303, C322, F300,
R313, C304
9-33
Flow Chart of Troubleshooting
Check Antenna
Switch Control
Resolder or Change
U202