Samsung GT-i9000B, Руководство по обслуживанию, Страница: 61 / 139

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Level 3 Repair
8-34
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Check C115
≤
-65dBm ?
8-3-16. WCDMA Band2 / GSM1900 RX
CONTINUOUS RX ON
RF INPUT : 9800CH
AMP : -50dBm
NORMAL CONDITION
catch the channel?
Check the Voltage at
C186 = V_BAT ?
Check component soldering
status OK at PAM103, C113,
L101, C101 ?
Check C131 ≥
-65dBm ?
CHECK soldered
RFS100, L103, C115, L118
resolder or change
C186, PAM101
resolder or change
PAM103, C113, L101, C101,
C131
resolder or change
UCP200
Check the freq. at OSC100
:26MHz ?
change or resolder
OSC100
PAM101 CHECK
pin9 or C127, C143, L111
≥
-65dBm ?
resolder or change
PAM101, C127, C143, L111
WCDMA BAND2, PCS1900 Receiver is O.K?
resolder or change
UCSP200
END
NO
YES
NO
NO
YES
NO
YES
NO
YES
NO
YES
NO
YES
NO
YES
Check component soldering
status OK at
U100, F100 ?
F100 PIN 12, 13 ≥ -65dBm
resolder or change
U100, F100
NO
YES
Check the voltage at
{R100 = V_BAT ?}
& {C110, C264 = 2.85V ?}
& {C111,C112,C233 = 1.8V?}
& {C109,C263 = 2.85V ?}
& {C112 = 1.8GV ?}