Level 3 Repair
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Confidential and proprietary-the contents in this service guide subject to change without prior notice.
8-42
U116 PIN11 : About
30dBm ?
8-3-17. GSM850/GSM900 TX
Check the Voltage at
C134 = VOUT_CHARGER?
Check the Voltage at
C153 = OUT_CHARGER?
CHECK soldered
U119, C144, L111, L110, C188,
L126, L127, L142, C189, ANT103
Resolder or change
U116, C134
Resolder or change
U129, C153
Check C165, L113, L115:
About 30dBm ?
Resolder or change
C165, L113, L115
YES
NO
NO
YES
YES
NO
NO
YES
Check C154, C161 :
About 0dBm ?
Resolder or change
C154, C161
YES
YES
Check the voltage at
{C158 = VBAT_RF ?}
& {C157 = 2.85V ?}
& {C155 = 2.65V ?}
& {C159 = 1.8V?}
& {C160 = 1.2V?}
Resolder or change
U103
Check the freq. at C150
: 26MHz ?
Change or resolder
OSC100
GSM850/900 Transmitter is O.K?
Resolder or change
UCP300
END
NO
YES
NO
YES
NO
CONTINOUS TX ON CONDITION
TX POWER DAC:14500 CODE
APPLIED
GSM850 CH : 190
GSM900 CH : 62
RBW : 100KHz
VBW : 100KHz
SPAN : 10MHz
REF LEV. : 10dBm
ATT. : 20dB
Summary of Contents for Galaxy Tab GT-P7500
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