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Flow Chart of Troubleshooting and Circuit Diagrams
9-25
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9-2-4. DCS Transmitter
Tx ON
(Level : 0)
battery voltage : 3.8V
YES
NO
VCO600 Check
Pin #5
≒
6dBm ?
PAM600 Check
Pin #15
≥
27dBm ?
DUF800 Check
Pin#6
≥
27dBm?
Check the U601
VCO600 Resolder
VCO600 Resolder or Change or
Check the path of VCO600 & PAM600
THE END
NO
NO
YES
YES
YES
Check the DUF800
DUF800 Check
Pin #20
≥
27dBm?
DUF800 Resolder or Change or
Check the path of DUF800 & PAM600
NO
YES
NO
U601 Check
Pin#40
≤
2.3V ?