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SGH-Z130 Flow Chart of Troubleshooting and Circuit Diagrams
2-
24
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2-2-5. UMTS Receiver
Continuous RX ON
RF Input : 10700 CH
AMP : -40dBm
NORMAL CONDITION
Catch the channel ?
YES
NO
CON800 Check
Pin #3
≥
-45dBm ?
U801 Check
Pin #9
≥
-45dBm ?
U702 Check
Pin#11
≥
-65dBm ?
Check antenna contack
CON800
Resolder or Change
U801 Resolder or Change
THE END
NO
NO
YES
YES
YES
U702 Resolder or
change
F700 Check
Pin #3
≥
-45dBm ?
F700 Resolder or
change
NO
YES
NO
F703 Resolder or change
Change the path of F703
and U701
U701 check
pin#6,8
≥
-65dBm
F703 check
pin#3,4
≥
-65dBm ?
YES
YES
NO
NO