Samsung SGH-i560V Service Manual page 84

Flow Chart of Troubleshooting
9-2-4. Abnormal EGSM Tx Operation
TX ON(5 level)
U202 PIN8
≥ -5dBm
F201 PIN4
≥ -15dBm
U201 PIN55
≥ -15dBm
Check U201,
UCP400
END
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 F201,
R215, R216
R217, C213
PIN28
PIN27
PIN1
9-40
Check Antenna
Switch Control
Resolder or Change
U202