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SGH-Z510 Flow Chart of Troubleshooting and Circuit Diagrams
2-2-4. GSM Transmitter
Tx On
Tx Level: 5
YES
RFS800( RF Connector)
Pin #3 ≥ 30dBm ?
YES
U800
(Antena Switch Module input)
Pin#13 ≥ 30dBm ?
YES
PAM600 (GSM PAM)
Pin #11 ≥ 30dBm ?
YES
VCO600(Dual Tx VCO)
Pin #1 ≒ 6dBm ?
YES
Check C616 & C619
(TX IQ signal) ≥ 1V
NO
Check UCP100(MSM6250A)
END
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Resolder or Change
NO
NO
NO
Resolder or Change PAM600
NO
Resolder or Change
YES
Check Loop Filter circuit
(R612,R613,C626,C627,C629)
SAMSUNG Proprietary-Contents may change without notice
RFS800
Resolder or Change
YES
U801
Pin#26=H Pin27=
H Pin4=L?
Check Antenna Switch Module
NO
Check C609
U601
2-29
U800
Control Path
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