Level 3 Repair
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8-50
Check C110
≤
-65dBm ?
8-3-17. GSM 850/900 RX
NORMAL CONDITION
catch the channel?
CONTINUOUS RX ON
RF INPUT : 190/62CH
AMP : -50dBm
NO
YES
NO
YES
NO
YES
NO
YES
NO
NO
YES
NO
END
Resolder or change
U202
GSM 850/900 Receiver is O.K?
Resolder or change
L125,L126,L127,F102
Check L125,L127
≥
-65dBm ?
Change or resolder
C284, R202
Check the freq. at C284,
R202: 19.2MHz ?
Resolder or change
L201,C829,L800,
Resolder or change
C118
CHECK soldered
RFS100, C110, L107
Check the Voltage at
C118 VREG_FEMID_2.85V
Check the voltage at
{C218, C219 = 1.8V}
& {C210 = 1.2V}
& {TA200 = 1.3V}
& {C216,C217,C205 = 2.2V}
Summary of Contents for GT-P7320
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