Samsung SM-T805 Service Manual page 143

Level 3 Repair
8-3-28. LTE Band1 TX
U1002 PIN6 : About
30dBm ?
Check the Voltage at
{C1023 > 3.6V?}
Check L1020 : About
20dBm ?
Check L1004 : About
20dBm ?
Check the Voltage at
C1062, C1059 > 3V?
Check C1082 : 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 B1 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
L1020, L1014
Resolder or change
U1001, L1004, L1073, C1006
Resolder or change
PAM1002, C1062, C1066,
C1059, C1065, C1067, C1068,
U1003, C1078, C1095,
C1098, C1101
Resolder or change
C1082, C1020, C1083
NO
Resolder or change
U1007
Change or resolder
OSC1001
Resolder or change
UCP301
8-99
CONTINOUS TX ON CONDITION
TX POWER DAC:14500 CODE
APPLIED
LTE Band1 CH : 18300
RBW : 100KHz
VBW : 100KHz
SPAN : 10MHz
REF LEV. : 10dBm
ATT. : 20dB