Level 3 Repair
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Confidential and proprietary-the contents in this service guide subject to change without prior notice.
8-65
Check C110 :
about 30dBm ?
8-3-22. WCDMA BAND1 TX
CONTINOUS TX ON CONDITION
TX POWER DAC:120 CODE APPLIED
CH : 9750
RBW : 100KHz
VBW : 100KHz
SPAN : 10MHz
REF LEV. : 10dBm
ATT. : 20dB
NO
Resolder or change
L237,L236,C296,F200
Check L237 : 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
L238,C297,PAM200
Check L238 :
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
WCDMA BAND1 Transmitter is O.K?
Change or resolder
C284, R202
Check the freq. at C284,
R202: 19.2MHz ?
Содержание GT-P7320
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