Wcdma Band2 Tx - Samsung GT-N7000 Service Manual

8-3-20. WCDMA BAND2 TX

U1002 PIN14 : About
22dBm ?
Check the Voltage at
C1026 = V_BAT ?
Check L1006, L1009 :
About 22dBm ?
Check component
soldering status OK at
F1000
Check
L1051, L1020, C1053
About 22dBm ?
Check the Voltage at
C1058 = V_BAT ?
Check the Voltage at
C1040 = V_BAT ?
Check C1050
About 0dBm ?
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?}
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YES
NO
NO
YES
YES
NO
NO
YES
YES
NO
NO
YES
NO
YES
YES
YES
NO
YES
CHECK soldered
- RFS1001, C1030, L1016
L1001, C1018, C1019, RFS1000
Resolder or change
U1002, C1026
Resolder or change
L1006, L1009
Resolder or change
F1000
Resolder or change
L1051, L1020, C1053:
Resolder or change
U1004, C1058
Resolder or change
U1005, C1040
Resolder or change
C1050
Resolder or change
U1000
8-61
Level 3 Repair
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