Level 3 Repair
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Confidential and proprietary-the contents in this service guide subject to change without prior notice.
8-55
U106 PIN14 : About 22
dBm ?
8-3-25. WCDMA BAND8 TX
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
Check the Voltage at
C142 = VOUT_CHARGER?
Resolder or change
U106, C142
Check L110,L107,L108
:About 22dBm ?
Resolder or change
L110,L107,L108
YES
NO
NO
YES
YES
CHECK soldered
RFS100,C139,L101,C138,L112
C137,L111,C141,C2107,ANT103
NO
Check component
soldering status OK at
U106
Resolder or change
U106
NO
YES
Check L123,C165
:About 22dBm ?
Resolder or change
L123,C165
YES
NO
Check the Voltage at
C153 = OUT_CHARGER?
Resolder or change
U108, C150,C153,C154
NO
YES
Check C162
: About 0dBm ?
Resolder or change
C162
YES
YES
Check the voltage at
{C169 = VBAT_RF ?}
& {C168 = 2.85V ?}
& {C164 = 2.65V ?}
& {C170 = 1.8V?}
& {C171 = 1.2V?}
Resolder or change
U101,C164,C168,C169,C170,C171
Check the freq. at C158
: 26MHz ?
Change or resolder
OSC100
WCDMA BAND8
Transmitter is O.K?
Resolder or change
UCP300
END
NO
YES
NO
YES
NO
Summary of Contents for GT-N8000
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