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Level 3 Repair
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Confidential and proprietary-the contents in this service guide subject to change without prior notice.
8-50
Check C1030
≤
-65dBm ?
8-3-15. WCDMA Band5 / GSM 850 RX
NORMAL CONDITION
catch the channel?
Check the voltage at
{C1062 = VBAT_RF ?}
& {C1000,C100 = V_BAT?}
& {C1061, C1021 = 2.85V ?}
& {C1056, C1016 = 2.65V ?}
& {C1060, C1017 = 1.8V?}
& {C1059, C1022, C1024) =
1.2V?}
Check the Voltage at
C1026 = V_BAT ?
Check component
soldering status OK at
F1000
CHECK soldered
RFS1001, C1030,L1016
Resolder or change
U1002, C1026
Resolder or change
F1000
Resolder or change
U1000
Check the freq. at
C1048 : 26MHz ?
Change or resolder
OSC1000
Check C1020, L1008
≥
-65dBm ?
Resolder or change
C1020, L1008
WCDMA B5 / GSM850
Receiver is O.K?
Resolder or change
U300
END
NO
YES
NO
NO
YES
NO
YES
NO
YES
NO
YES
NO
YES
NO
Check F1000 PIN 20, 21
≥
-65dBm
Resolder or change
F1000
NO
YES
CONTINUOUS RX ON
RF INPUT : 4408CH
AMP : -50dBm