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2-2-3. PCS Receiver
Rx On
RF Input: 661 CH
Cell Power:-50dBm
YES
RFS800( RF Connector)
Pin #3 ≥ -60dBm ?
YES
U800
(Antena Switch Module)
Pin#4 ≥ -60dBm ?
YES
F802(DCS Rx Saw )
Pin #3,4 ≥ -60dBm ?
YES
U600
(RTR6250 DCSINP,INM)
Pin #24,25 ≥ -60dBm ?
YES
Check R103 & R104
(RX IQ signal) ≥ 1V
Check UCP100(MSM6250A)
END
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SGH-Z510 Flow Chart of Troubleshooting and Circuit Diagrams
NO
Resolder or Change
RFS800
YES
U800
NO
Pin#26=L Pin27=H Pin28=L
?
NO
NO
Check C814,L815
Resolder or Change F802
Resolder or Change
NO
U600
YES
Check U600(RTR6250 VDDA)
V_2.85TX,RX,OSC ≒ 2.85V ?
2-28
Resolder or Change
U800
Check Antenna Switch
Control Path
Check& Resolder
R614,R617,C630,C631
Check& Resolder
VDDA of U600
NO
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