Wcdma Band2 Tx - Samsung GT-P5200 Service Manual

Level 3 Repair

8-3-24. WCDMA BAND2 TX

U1000 PIN11 : About
30dBm ?
Check the Voltage at
C1014 = 2.85V ?
Check L1005 :
About 22dBm ?
Check component
soldering status OK at
F1000
Check C1068, L1017:
About 22dBm ?
Check the Voltage at
C1049 =
VOUT_CHARGER?
Check C1052:
About 0dBm ?
Check the voltage at
{C1057 = VBAT_RF ?}
& {C1056 = 2.85V ?}
& {C1054 = 2.65V ?}
& {C1058 = 1.8V?}
& {C1059 = 1.2V?}
Check the freq. at
OSC1000 PIN 1 or PIN
3 : 26MHz ?
WCDMA BAND2
Transmitter is O.K?
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YES
NO
NO
YES
YES
NO
NO
YES
YES
NO
NO
YES
YES
YES
NO
YES
NO
YES
NO
END
CHECK soldered
L1004, C1023, C1026, RFS1000
Resolder or change
U1000, C1014
Resolder or change
L1005
Resolder or change
F1000
Resolder or change
C1068, L1017:
Resolder or change
PAM1000, C1049
Resolder or change
C1052
Resolder or change
U1004
Change or resolder
OSC1000
Resolder or change
UCP3000
8-60
CONTINOUS TX ON CONDITION
TX POWER DAC:14500 CODE
APPLIED
WCDMA Band2 CH : 9880
RBW : 100KHz
VBW : 100KHz
SPAN : 10MHz
REF LEV. : 10dBm
ATT. : 20dB