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Flow Chart of Troubleshooting
9-26
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9-2-5. PCS1900 Receiver
**If you check the tx chain,
Check the not only RF Device but also resistor, inductor and capacitor.
Continuous RX ON
RF Input : 698 CH
AMP : -50dBm
NORMAL CONDITION
Catch the channel ?
YES
NO
Check L100
≥
-55dBm ?
F100 Check
Pin #3
≥
-55dBm ?
U201 Check
Pin#32,33
≥
-
55dBm ?
Check antenna contact
Replace RFS100
F100 Resolder or Change
THE END
NO
NO
YES
YES
YES
Check the path from F100
to U201
NO