Wcdma Band8 Tx - Samsung Galaxy Tab GT-P5100 Service Manual

Level 3 Repair

8-3-24. WCDMA BAND8 TX

U101 PIN14 : About 22
dBm ?
Check the Voltage at
C103 = VOUT_CHARGER?
Check C190, L109:
About 22dBm ?
Check component
soldering status OK at
F100
Check L116, C184:
About 22dBm ?
Check the Voltage at
C131 = OUT_CHARGER?
Check C143:
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 BAND8
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, C134
Resolder or change
C190, L109
Resolder or change
F100
Resolder or change
L116, C184
Resolder or change
U103, C131
Resolder or change
C143
Resolder or change
U104
Change or resolder
OSC100
Resolder or change
UCP300
8-64
CONTINOUS TX ON CONDITION
TX POWER DAC:14500 CODE
APPLIED
WCDMA Band8 CH : 3013
RBW : 100KHz
VBW : 100KHz
SPAN : 10MHz
REF LEV. : 10dBm
ATT. : 20dB