
Level 3 Repair
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Confidential and proprietary-the contents in this service guide subject to change without prior notice.
8-57
U1000 PIN11 : About
30dBm ?
8-3-23. WCDMA BAND1 TX
Check the Voltage at
C1014 = 2.85V ?
Resolder or change
U1000, C1014
Check C1078 :
About 22dBm ?
Resolder or change
C1078
YES
NO
NO
YES
YES
CHECK soldered
L1004, C1023, C1026, RFS1000
NO
Check component
soldering status OK at
F1000
Resolder or change
F1000
NO
YES
Check C1055, L1020:
About 22dBm ?
Resolder or change
C1055, L1020
YES
NO
CONTINOUS TX ON CONDITION
TX POWER DAC:14500 CODE
APPLIED
WCDMA Band1 CH : 10700
RBW : 100KHz
VBW : 100KHz
SPAN : 10MHz
REF LEV. : 10dBm
ATT. : 20dB
Check the Voltage at
C1049 =
VOUT_CHARGER?
Resolder or change
PAM1000, C1049
NO
YES
Check C1052:
About 0dBm ?
Resolder or change
C1052
YES
YES
Check the voltage at
{C1057 = VBAT_RF ?}
& {C1056 = 2.85V ?}
& {C1054 = 2.65V ?}
& {C1058 = 1.8V?}
& {C1059 = 1.2V?}
Resolder or change
U1004
Check the freq. at
OSC1000 PIN 1 or PIN
3 : 26MHz ?
Change or resolder
OSC1000
WCDMA BAND1
Transmitter is O.K?
Resolder or change
UCP3000
END
NO
YES
NO
YES
NO
Содержание GT-P5200
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