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SGH-Z510 Flow Chart of Troubleshooting and Circuit Diagrams
2-
34
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2-2-6. WCDMA Receiver
Rx On
RF Input: 10700 CH
Cell Power:-40dBm
RFS800( RF Connector)
Pin #3
≥
-50dBm ?
U800
(Anntena Switch Module )
Pin#20
≥
-50dBm ?
YES
DUF700(Duplexer)
Pin #5
≥
-50dBm ?
U700(RTR6250 UMTS_IN)
Pin #18
≥
-65dBm ?
U700
(RFR6250 UMTS ILNA_OUT)
Pin #14
≥
-65dBm ?
YES
YES
YES
YES
NO
Resolder or Change
RFS800
NO
U800
Pin#26,28=HIGH, #27= LOW?
Resolder or Change
U800
Check Antenna Switch Module
Control Path
NO
YES
Resolder C703 or Change
DUF700
NO
Check or Resolder
C708, R703
NO
Resolder or Change
U700
NO
F702(UMTS RX Saw Filter)
Pin #3,4
≥
-65dBm ?
U700(RFR6250 IMIXM,IMIXP)
Pin #8,9
≥
-65dBm ?
R103, R104(RX IQ signal)
≥
1V ?
Check UCP100(MSM6250A)
END
YES
YES
YES
YES
NO
Check the path of
F702 & U700
NO
Check the path of
F702 & U700
V_2.85TCXO, V_2.85RX1
Of U700
≒
2.85V ?
YES
YES
NO
Resolder or Change
U700(RFR6250)
NO
Check& Resolder
C715,C716,R710, R711
Summary of Contents for SGH-Z510
Page 63: ...6 1 6 SGH Z510 Block Diagrams ...
Page 64: ...SGH Z510 Block Diagrams 6 2 ...
