Samsung SGH-F480 Cell Phone User Manual


 
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Flow Chart of Troubleshooting
9-28
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9-2-5. PCS1900 Receiver
**If you check the rx chain,
Check not only RF Devices but also resistors, inductors and capacitors.
Continuous RX ON
RF Input : 698 CH
AMP : -50dBm
Check C105
-65dBm ?
NO
Check L108
-70dBm ?
Resolder RFS101
Replace PAM100
NO
YES
YES
U200 Check
Pin#11, 12, 13,14
500mV ?
Resolder U200 or check pins
related to U200
NO
YES
THE END
YES
Check U200