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SGH-Z510 Flow Chart of Troubleshooting and Circuit Diagrams
2-
26
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2-2.RF
2-2-1. GSM Receiver
Rx On
RF Input: 62 CH
Cell Power:-50dBm
RFS800( RF Connector)
Pin #3
≥
-60dBm ?
U800
(Antena Switch Module)
Pin#2
≥
-60dBm ?
YES
F800(GSM Rx Saw)
Pin #3,4
≥
-60dBm ?
U600
(RTR6250 EGSM INP,INM)
Pin #37,38
≥
-60dBm ?
YES
YES
YES
YES
Check R103 & R104
(RX IQ signal)
≥
1V
NO
Check UCP100(MSM6250A)
END
Resolder or Change
U600(RTR6250)
NO
Resolder or Change
RFS800
Check & Resolder
L803,L804,L805
Check C810,L806
Resolder or Change F801
Resolder or Change
U801
U801
Pin#26=L Pin27
=L Pin28=L?
Check Antenna Switch Module
Control Path
NO
YES
Check& Resolder
C631,C630,R614,R617
NO
NO
NO
YES
Check the VDDA ,
VDDM of U600(RTR6250 )
V_2.85RX,TX,OSC
≒
2.85V ?
V_2.6P
≒
2.6V?
YES
NO
Summary of Contents for SGH-Z510
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