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.
8-62
Check C110 :
about 30dBm ?
8-3-21. GSM1800/1900 TX
CONTINOUS TX ON CONDITION
TX POWER DAC:14500 CODE
APPLIED
DCS CH : 698
PCS CH : 661
RBW : 100KHz
VBW : 100KHz
SPAN : 10MHz
REF LEV. : 10dBm
ATT. : 20dB
NO
Resolder or change
L210,L287,L209,C288
Check C288 : about 0dBm
YES
NO
Resolder or change
C231,C143,C144
Check the Voltage at
C231=VPAM
YES
Check the Voltage at
C118 VREG_FEMID_2.85V
CHECK soldered
C110,L107,F102
Resolder or change
C118
No
Yes
NO
NO
YES
Resolder or change
L206,C299,PAM200
Check L206 :
about 30dBm
NO
YES
Resolder or change
C222,C239,C221,C240
Check the Voltage at
C222,C239 Vout_Charger
YES
YES
NO
Resolder or change
L201,C829,L800,
Check the voltage at
{C218, C219 = 1.8V}
& {C210 = 1.2V}
& {TA200 = 1.3V}
& {C216,C217,C205 = 2.2V}
NO
YES
NO
END
Resolder or change
U202
GSM1800/GSM1900 Transmitter is O.
K?
Change or resolder
C284, R202
Check the freq. at C284,
R202: 19.2MHz ?
Summary of Contents for GT-P7320
Page 121: ...www s manuals com ...
