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Level 3 Repair
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Confidential and proprietary-the contents in this service guide subject to change without prior notice.
8-52
U101 PIN14 : About
30dBm ?
8-3-20. GSM1800/ GSM1900 TX
Check the Voltage at
C103 = VOUT_CHARGER?
Check the Voltage at
C131 = OUT_CHARGER?
CHECK soldered
C121, L108, RFS100
Resolder or change
U101, C103
Resolder or change
U103, C131
Check C126:
About 27dBm ?
Resolder or change
C126
YES
NO
NO
YES
YES
NO
NO
YES
Check C144:
About 0dBm ?
Resolder or change
C144
YES
YES
Check the voltage at
{C150 = VBAT_RF ?}
& {C149 = 2.85V ?}
& {C145 = 2.65V ?}
& {C151 = 1.8V?}
& {C152 = 1.2V?}
Resolder or change
U104
Check the freq. at C139
: 26MHz ?
Change or resolder
OSC100
GSM1800/1900 Transmitter is O.K?
Resolder or change
UCP300
END
NO
YES
NO
YES
NO
CONTINOUS TX ON CONDITION
TX POWER DAC:14500 CODE
APPLIED
DCS CH : 685
PCS CH : 661
RBW : 100KHz
VBW : 100KHz
SPAN : 10MHz
REF LEV. : 10dBm
ATT. : 20dB
Содержание Galaxy Tab GT-P5100
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