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3-2-2. DCS Rx
Continuous RX ON
Normal Condition Catch the
Check pin #12 of
U100 ≥ -65dBm
Check pin #19 of
U100 ≥ -65dBm
Check pin #22,23 of
U101 ≥ -65dBm
Check pin #16,17,33 of
Check the pin #34,35 of U101=
Check the pin #4,5,6,7 of U101
GSM Receiver is O.K?
SAMSUNG Proprietary-Contents may change without notice
YES
channel
YES
YES
YES
YES
U101 ≥ 2.9V
YES
26Mhz
YES
Vp-p=100mV
YES
YES
END
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Flow Chart of Troubleshooting and Circuit Diagrams
Check soldered status of
NO
C101,L103,L101,L100,C107
Resolder or Change
NO
RFS100,L100,L101,C107
NO
Resolder or Change U100
NO
Check soldered status of
C119,C120,L105
NO
Check or Resolder BTC400,C426
NO
Resolder or Change OSC100
NO
Resolder or Change U101
NO
GSM RX path component
resolder or change
3-24
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