Samsung GT-i9003 Service Manual page 67

Level 3 Repair
8-3-20. WCDMA BAND1 TX
Check PAM101 PIN1 :
About 22 dBm ?
Check the Voltage at
C186 = V_BAT?
Check C141, L109 :
About 22dBm ?
Check C135
about 3.4 V ?
Check PAM104 pin 7
about 22dBm ?
Check C147
about 8dBm ?
Check the voltage at
{R100 = V_BAT ?}
& {C110, C264 = 2.85V ?}
& {C111,C112,C233 = 1.8V?}
& {C109,C263 = 2.85V ?}
& {C112 = 1.8GV ?}
Check the freq. at C128
: 26MHz ?
WCDMA 2100 Transmitter is O.K?
END
NO
YES
NO
YES
NO
YES
NO
YES
NO
YES
NO
YES
NO
YES
YES NO
YES
NO
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CHECK soldered
RFS100, L103,C115,L118,
C183, ANT102
resolder or change
PAM101, C186
resolder or change
C141, L109
resolder or change
U102
resolder or change
PAM104
resolder or change
U101
resolder or change
UCP200
change or resolder
OSC100
resolder or change
UCP200
8-42
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