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SAMSUNG Proprietary-Contents may change without notice
Level 3 Repair
8-50
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Check L121 > 30 dBm ?
8-3-20. DCS/PCS TX
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
GSM850/900 Transmitter is O.K?
resolder or change
U300
END
NO
YES
Check the Voltage
C102 = VBAT ?
Check the Power
FEM100 Pin7
> 30dBm ?
CHECK soldered
RFS100, L121,L101,C107,C159
resolder or change
FEM100
resolder or change
C102
Check the freq. at
OSC500 : 19.2MHz ?
change or resolder
OSC500
Check L100
≥
30dBm ?
resolder or change
L100,C108,PAM100,C104
YES
NO
NO
YES
NO
YES
NO
YES
NO
YES
NORMAL CONDITION
NO