Samsung GT-i9001 Service Manual page 84

8-3-20. DCS/PCS TX
NORMAL CONDITION
Check L103 > 30 dBm ?
Check the Power
F100 Pin 7 > 30dBm ?
Check L100 ≥
Check the Voltage
C100,C101,C102,C103
=VBAT?
Check the freq. at
OSC500 : 19.2MHz ?
GSM850/900 Transmitter is O.K?
END
NO
YES
NO
NO
YES
NO
25dBm ?
YES
NO
YES
NO
YES
NO
YES
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CHECK soldered
RFS100, L103,L104,C112,C113
resolder or change
F100
resolder or change
L100,C106,PAM100
resolder or change
C100,C101,C102,C103
change or resolder
OSC500
resolder or change
U300
8-55
Level 3 Repair
CONTINOUS TX ON CONDITION
TX POWER DAC:14500 CODE
APPLIED
GSM850 CH : 190
GSM900 CH : 6 98
RBW : 100KHz
VBW : 100KHz
SPAN : 10MHz
REF LEV. : 10dBm
ATT. : 20dB