Samsung SM-T805 Service Manual page 152

8-3-28. LTE Band7 TX
U1002 PIN6 : About
30dBm ?
Check the Voltage at
{C1023 > 3.6V?}
Check C1044 : About
20dBm ?
Check C1075 : About
20dBm ?
Check the Voltage at
C1069, C1070 > 3V?
Check C1073 : About
0dBm ?
Check the voltage at
{C1058, = 1.8V ?}
& {C1055 = 1.2V ?}
& {C1048 = 1.5V ?}
& {C1057 = 2.5V ?}
Check the freq. at
C1099 : 26.0MHz ?
LTE B7 Transmitter is O.K?
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YES
NO
NO
YES
YES
NO
NO
NO
NO
YES
NO
YES
YES
NO
YES
NO
END
CHECK soldered
RFS1001, F1001, C1015,
L1011, C1018
Resolder or change
U1002, C1023
Resolder or change
F1003, C1044, L1030, C1043
Resolder or change
C1075, L1035, C1076
Resolder or change
PAM1001, C1069, C1070,
C1071, U1003, C1078,
C1095, C1098, C1101
Resolder or change
C1073, C1074, L1034, L1037
NO
Resolder or change
U1007
Change or resolder
OSC1001
Resolder or change
UCP301
8-108
Level 3 Repair
CONTINUOUS TX ON CONDITION
APPLIED
LTE Band7 CH : 21100
RBW : 100KHz
VBW : 100KHz
SPAN : 10MHz
REF LEV. : 10dBm
ATT. : 20dB