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Flow Chart of Troubleshooting
3-25
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3-7-7. UMTS Receiver
Continuous RX ON
RF Input : 10700 CH
AMP : -40dBm
NORMAL
CONDITION
Catch the channel ?
YES
NO
U701 Check
Pin #6
≥
-45dBm ?
U701 Check
Pin #4
≥
-45dBm ?
U802 Check
Pin#18
≥
-65dBm ?
Check antenna contack
U701 Resolder or Change
U701 Resolder or Change
THE END
NO
NO
YES
YES
YES
U802 Resolder or change
F801 Check
Pin #5
≥
-45dBm ?
F801 Resolder or change
NO
YES
NO
F802 Resolder or change
Change the path of F802
and U802
U802 check
pin#8,9
≥
-65dBm
F802 check
pin#1
≥
-65dBm?
YES
YES
NO
NO