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SAMSUNG Proprietary-Contents may change without notice
Flow Chart of Troubleshooting
9-47
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9-7. EGSM RX
PIN28
PIN27
PIN1
PAM100 PIN8
≥ -60dBm
F102 PIN4
≥ -70dBm
Re-solder RFS100,
L101, C102
U101 PIN3,4
≥ -75dBm
Check PAM100
PIN28=H, PIN27=L
PIN1=H
Re-solder or
Change
F100,C115,C102
Check Antenna
Switch Control
Re-solder or Change
PAM100
YES
YES
YES
YES
NO
NO
NO
RX ON
AMP--50dBm
Check U101,
UCP300
END
U101 PIN48,
49 ≥ -75dBm
NO
Re-solder or
Change
L103,L104,C114
YES