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SAMSUNG Proprietary-Contents may change without notice
Flow Chart of Troubleshooting
9-30
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9-2-9. UMTS850 Receiver
**If you check the tx chain,
Check the not only RF Device but also resistor, inductor and capacitor.
NORMAL
CONDITION
Catch the channel
?
YES
NO
Check L130
≥
-
55dBm ?
U201 Check
Pin#26
≥
-65dBm ?
Check antenna contack
Replace RFS100
Replace PAM201
THE END
NO
NO
YES
YES
YES
Check the path from
F203 to U201
F203 Check
Pin #5
≥
-45dBm
?
F203 Resolder or change
NO
YES
NO
Resolder or replace
C231 , C232
Check U203
U203 check
pin#7
freq = 19.2MHz
C231 , C232
≥
-
65dBm?
YES
YES
NO
NO
Continuous RX ON
RF Input : 9800 CH
AMP : -40dBm
PAM201 Check
Pin #10
≥
-45dBm ?