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SGH-Z320i Flow Chart of Troubleshooting and Circuit Diagrams
2-
23
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2-2-4. DCS Transmitter
Tx ON
(Level : 0)
battery voltage : 3.8V
YES
NO
VCO600 Check
Pin #5
≒
6dBm ?
PAM600 Check
Pin #15
≥
27dBm ?
RFS800 Check
Pin#3
≥
27dBm?
Check the U600
VCO600 Resolder
VCO600 Resolder or Change or
Check the path of VCO600 & PAM600
THE END
NO
NO
YES
YES
YES
Check the RFS800
U800 Check
Pin #22
≥
27dBm?
U800 Resolder or Change or
Check the path of U800 & PAM600
NO
YES
NO
U600 Check
Pin#40
≤
2.3V ?