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Flow Chart of Troubleshooting and Circuit Diagrams
9-22
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9-2.RF
9-2-1. EGSM Receiver
Continuous RX ON
RF Input : 62 CH
AMP : -50dBm
NORMAL CONDITION
Catch the channel ?
YES
NO
DUF800 Check
Pin #12
≥
-55dBm ?
DUF800 Check
Pin #13
≥
-55dBm ?
U601 Check
Pin#37,38
≥
-55dBm ?
Check antenna contact
DUF800 Resolder or Change
DUF800 Resolder or Change
THE END
NO
NO
YES
YES
YES
Check the path of DUF800
and U601
NO