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SAMSUNG Proprietary-Contents may change without notice
Level 3 Repair
8-56
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Check U102 PIN1 :
About 22 dBm ?
8-3-22. WCDMA BAND2 TX
CONTINOUS TX ON CONDITION
TX POWER DAC:14500 CODE
APPLIED
GSM850 CH : 190
GSM900 CH : 62
RBW : 100KHz
VBW : 100KHz
SPAN : 10MHz
REF LEV. : 10dBm
ATT. : 20dB
Check the voltage at
{R106 = VBAT ?}
& {C158, U305 = 2.85V ?}
& {C159,C160,C325 = 1.8V?}
& {C330 = 2.85V ?}
Check the Voltage at
C131 = VBAT ?
Check U103 pin 9
about 22dBm ?
Check U104 PIN2
about 8dBm ?
CHECK soldered
RFS100, L102,C115,C104,
C183, ANT102
resolder or change
U102 , C131
resolder or change
U103
resolder or change
U105
Check the freq. at C185
: 26MHz ?
change or resolder
OSC100
Check C140,C143,L110 :
About 22dBm ?
resolder or change
C140,C143,L110
WCDMA 1900 Transmitter is O.K?
resolder or change
UCP300
END
NO
YES
NO
YES
NO
YES
NO
NO
NO
YES
NO
YES
Check C145, C147, C148,
F104_PIN3 About 22 dBm ?
resolder or change
C145, C147, C148, F104
NO
Check C144, F103 about
8dBm ?
resolder or change
C144, F103
NO
Check the Voltage at
C125 = VBAT ?
C188
≥
2.95V ?
resolder or change
U101 , U108
NO
YES
NO
YES
NO
YES
NO
NO
YES