Samsung i8510 Service Manual page 102

10-2-4. WCDMA900 Tx
TX ON
PWR=22.5dBm
Target
Check
TX Module Output
U101 PIN17
≥ 10dBm
Check
TX Module Input
U101 PIN20
≥ 8dBm
Check
Duplexer Input
F107 PIN2
≥ 5dBm
Check
PAM Input
PAM102 PIN4
≥ -15dBm
Check
Transceiver Input
U201 PIN57
≥ -20dBm
Check U201, UCP301
END
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Re-solder CN101,
C101, L102
Check U101
PIN6=H, PIN7=L
PIN8=L , PIN9=H
YES
Re-solder F107,
L114, C132
Re-solder or Change
PAM102, L115, C137, C138,
CPL101
Re-solder or Change
C212, F108, R111, C139,
C136, L116
10-47
Flow Chart of Troubleshooting
Check Antenna
Switch Control
Re-solder or Change
U101