Level 3 Repair
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Confidential and proprietary-the contents in this service guide subject to change without prior notice.
8-74
Check C110 :
about 30dBm ?
8-3-25. LTE BAND3 TX
CONTINOUS TX ON CONDITION
TX POWER DAC:120 CODE APPLIED
CH : 19575
RBW : 100KHz
VBW : 100KHz
SPAN : 40MHz
REF LEV. : 10dBm
ATT. : 20dB
NO
Resolder or change
L246,L286,C220,F201
Check L246 : about 0dBm
YES
NO
Resolder or change
C254,C257
Check the Voltage at
C254,C257=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
L230,L217,PAM201
Check L230:
about
22
dBm
NO
YES
Resolder or change
C256
Check the Voltage at
C256 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
LTE BAND3 Transmitter is O.K?
Change or resolder
C284, R202
Check the freq. at C284,
R202: 19.2MHz ?
Summary of Contents for GT-P7320
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