Level 3 Repair
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Confidential and proprietary-the contents in this service guide subject to change without prior notice.
8-60
U101 PIN14 : About
30dBm ?
8-3-24. GSM850/GSM900 TX
Check the Voltage at
C109 = V_BAT?
Check the Voltage at
C125 =V_BAT ?
CHECK soldered
-
RFS100, C111, L105
C104, C102, C105, C103,
ANT100
Resolder or change
U101, C109
Resolder or change
U103, C125
Check L109, C114, C119
: About 30dBm ?
Resolder or change
L109, C114, C119
YES
NO
NO
YES
YES
NO
NO
YES
Check C143: About
0dBm ?
Resolder or change
C143
YES
NO
Check the voltage at
{C152 = VBAT_RF ?}
& {C159,C161 = V_BAT?}
& {C151, C167 = 2.85V ?}
& {C147, C164 = 2.65V ?}
& {C150, C169 = 1.8V?}
& {C149, C165, C168) = 1.2V?}
Resolder or change
U104
Check the freq. at C132
: 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 GT-P6800
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