Wcdma Band1 Tx - Samsung GT-P3100 Servise Manual

Level 3 Repair

8-3-23. WCDMA BAND1 TX

U101 PIN18 : About
22dBm ?
Check the Voltage at
C103 = V_BAT ?
Check L102, L105 :
About 22dBm ?
Check component
soldering status OK at
F100
Check
L119, C144, C155
About 22dBm ?
Check the Voltage at
C157 = V_BAT ?
Check the Voltage at
C138 = V_BAT ?
Check C151
About 0dBm ?
Check the voltage at
{C150= VBAT_RF ?}
& {C158, C159 C160 =
V_BAT?}
& {C149, C170 = 2.85V ?}
& {C145, C165 = 2.65V ?}
& {C148, C172 = 1.8V?}
& {C166, C171, C147) = 1.2V?}
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
NO
YES
YES
YES
NO
YES
CHECK soldered
- CN100, C119, C112,
C118,L106,C120,C113,ANT101
Resolder or change
U101, C103
Resolder or change
L102, L105
Resolder or change
F100
Resolder or change
L119, C144, C155
Resolder or change
U102, C157
Resolder or change
U103, C138
Resolder or change
C151, C153
Resolder or change
U104
8-54
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