Samsung GT-i9001 Service Manual page 78

8-3-18. WCDMA Band2 RX
NORMAL CONDITION
catch the channel?
Check L103 ≤ -65dBm ?
Check the Voltage at
C111 =2.8V
Check L104,C112,C113
≥ -65dBm ?
Check the C128
≥ - 70 dBm ?
Check the C132
≥ - 70 dBm ?
Check the voltage at
{C316 = 2.2V ?}
&
{C319,C320,C322,C323,C326
C327,C330,C333=1.3V?}
Check the freq. at
OSC500 : 19.2MHz ?
BAND2 Receiver is O.K?
END
NO
YES
NO
NO
YES
NO
YES
NO
YES
NO
YES
NO
YES
NO
YES
NO
YES
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CHECK soldered
RFS100, L103,L104,C112
resolder or change
U501
resolder or change
F100
resolder or change
F101,C128,C131
resolder or change
C132,C133,C137,C140
L119,L123,L120
resolder or change
U501
change or resolder
OSC500
resolder or change
U300
8-49
Level 3 Repair
CONTINUOUS RX ON
RF INPUT : 9800CH
AMP : -50dBm