Samsung GT-N8000, Servise Manual

Page: 86 / 92

Level 3 Repair
Distribution, transmission, or infringement of any content or data from this document without Samsung’s written authorization is strictly prohibited.
Confidential and proprietary-the contents in this service guide subject to change without prior notice.
8-53
U106 PIN14 : About 22
dBm ?
8-3-24. WCDMA BAND5 TX
CONTINOUS TX ON CONDITION
TX POWER DAC:14500 CODE
APPLIED
WCDMA Band5 CH : 4408
RBW : 100KHz
VBW : 100KHz
SPAN : 10MHz
REF LEV. : 10dBm
ATT. : 20dB
Check the Voltage at
C142 = VOUT_CHARGER?
Resolder or change
U106, C142
Check L116,L114,L117
:About 22dBm ?
Resolder or change
L116,L114,L117
YES
NO
NO
YES
YES
CHECK soldered
RFS100,C139,L101,C138,L112
C137,L111,C141,C2107,ANT103
NO
Check component
soldering status OK at
F100
Resolder or change
F100
NO
YES
Check C198,L122,C166 :
About 22dBm ?
Resolder or change
C198,L122,C166
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 BAND5
Transmitter is O.K?
Resolder or change
UCP300
END
NO
YES
NO
YES
NO