Samsung GT-i9001 Service Manual page 75

Level 3 Repair
8-3-17. WCDMA Band8 / GSM900 RX
NORMAL CONDITION
catch the channel?
Check L103 ≤ -65dBm ?
Check the Voltage at
C111 =2.8V ?
Check L110,C120,C121
≥ -65dBm ?
Check the voltage at
{C316 = 2.2V ?}
&
{C319,C320,C322,C323,C326,C
327,C330,C333=1.3V?}
Check the freq. at :
OSC500 : 19.2MHz ?
GSM900/BAND8 Receiver is O.K?
END
NO
YES
NO
NO
YES
NO
NO
YES
NO
YES
NO
YES
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CHECK soldered
RFS100, L103,L104,C112
resolder or change
U501
resolder or change
F100,L110,C120,C121
resolder or change
U501
change or resolder
OSC500
resolder or change
U300
8-46
CONTINUOUS RX ON
RF INPUT : 9800CH
AMP : -50dBm