Wcdma Band2 Tx - Samsung Galaxy Tab GT-P5100 Service Manual

Level 3 Repair

8-3-22. WCDMA BAND2 TX

U101 PIN14 : About 22
dBm ?
Check the Voltage at
C103 = VOUT_CHARGER?
Check C102:
About 22dBm ?
Check component
soldering status OK at
F100
Check L114:
About 22dBm ?
Check the Voltage at
C131 = OUT_CHARGER?
Check C144:
About 0dBm ?
Check the voltage at
{C150 = VBAT_RF ?}
& {C149 = 2.85V ?}
& {C145 = 2.65V ?}
& {C151 = 1.8V?}
& {C152 = 1.2V?}
Check the freq. at C139
: 26MHz ?
WCDMA BAND2
Transmitter is O.K?
END
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YES
NO
NO
YES
YES
NO
NO
YES
YES
NO
NO
YES
YES
YES
NO
YES
NO
YES
NO
CHECK soldered
C121, L108, RFS100
Resolder or change
U101, C103
Resolder or change
C102
Resolder or change
F100
Resolder or change
L114
Resolder or change
U103, C131
Resolder or change
C144
Resolder or change
U104
Change or resolder
OSC100
Resolder or change
UCP300
8-58
CONTINOUS TX ON CONDITION
TX POWER DAC:14500 CODE
APPLIED
WCDMA Band2 CH : 9880
RBW : 100KHz
VBW : 100KHz
SPAN : 10MHz
REF LEV. : 10dBm
ATT. : 20dB