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SAMSUNG Proprietary-Contents may change without notice
Flow Chart of Troubleshooting and Circuit Diagrams
9-
30
This Document can not be used without Samsung's authorization
9-2-7. UMTS Receiver
Continuous RX ON
RF Input : 10700 CH
AMP : -40dBm
NORMAL CONDITION
Catch the channel ?
YES
NO
CN800 Check
Pin #2,3
≥
-45dBm ?
D800 Check
Pin #4
≥
-45dBm ?
U700 Check
Pin#18
≥
-65dBm ?
Check antenna
contack
CN800
Resolder or Change
D800 Resolder or
Change
THE END
NO
NO
YES
YES
YES
U700 Resolder or
change
DUF700 Check
Pin #5
≥
-45dBm ?
DUF700
Resolder or change
NO
YES
NO
Change the path of F702
and U700
U700 check
pin#8,9
≥
-65dBm
F702 check
pin#3,4
≥
-65dBm ?
YES
YES
NO
NO
F702
Resolder or change