Samsung SGH-i560V Service Manual page 88

Flow Chart of Troubleshooting
9-2-5. Abnormal DCS/PCS Tx Operation
TX ON(0 level)
U202 PIN8
≥ 0dBm
U202 PIN21
≥ -15dBm
U201 PIN56
≥ -15dBm
Check U201,
UCP400
END
YES
NO
YES
NO
YES
NO
PIN28
PIN27
PIN1
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Resolder RFS200,
L203,C236,L219
Check U202
PIN28=H, PIN27=H
PIN1=L
YES
Resolder or Change
C212, R209, R212,
R213
9-44
Check Antenna
Switch Control
Resolder or Change
U202