Wcdma Band1 Tx - Samsung GT-N8000 Servise Manual

Level 3 Repair

8-3-22. WCDMA BAND1 TX

U106 PIN14 : About 20.5
dBm ?
Check the Voltage at
C142 = VOUT_CHARGER?
Check L115,C191 :
About 20.5 dBm ?
Check component
soldering status OK at
F100
Check C148,L118,C149 :
About 20.5dBm ?
Check the Voltage at
C153 = OUT_CHARGER?
Check C196, L134 :
About 0dBm ?
Check the voltage at
{C158 = VBAT_RF ?}
& {C157 = 2.85V ?}
& {C155 = 2.65V ?}
& {C159 = 1.8V?}
& {C160 = 1.2V?}
Check the freq. at C150
: 26MHz ?
WCDMA BAND1
Transmitter is O.K?
END
Confidential and proprietary-the contents in this service guide subject to change without prior notice.
Distribution, transmission, or infringement of any content or data from this document without Samsung's written authorization is strictly prohibited.
YES
NO
NO
YES
YES
NO
NO
YES
YES
NO
NO
YES
YES
YES
NO
YES
NO
YES
NO
CHECK soldered
RFS100,C139,L101,C138,L112
C137,L111,C141,C2107,ANT103
Resolder or change
U106, C142
Resolder or change
L115, C191
Resolder or change
F100
Resolder or change
C148,L118,C149
Resolder or change
U129, C153
Resolder or change
C196, L134
Resolder or change
U101,C164,C168,C169,C170,C171
Change or resolder
OSC100
Resolder or change
UCP300
8-50
CONTINOUS TX ON CONDITION
TX POWER DAC:14500 CODE
APPLIED
WCDMA Band1 CH : 10700
RBW : 100KHz
VBW : 100KHz
SPAN : 10MHz
REF LEV. : 10dBm
ATT. : 20dB