Samsung SM-T805 Service Manual page 155

Level 3 Repair
8-3-28. LTE Band8 TX
U1002 PIN6 : About
30dBm ?
Check the Voltage at
{C1023 > 3.6V?}
Check C1037 : About
20dBm ?
Check L1006 : About
20dBm ?
Check the Voltage at
C1062, C1059 > 3V?
Check C1084 : 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 B8 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
C1037, L1024
Resolder or change
U1001, L1006, C1004, C1012
Resolder or change
PAM1002, C1062, C1066,
C1059, C1065, C1067, C1068,
U1003, C1078, C1095,
C1098, C1101
Resolder or change
C1080, L1040, C1081
NO
Resolder or change
U1007
Change or resolder
OSC1001
Resolder or change
UCP301
8-111
CONTINOUS TX ON CONDITION
TX POWER DAC:14500 CODE
APPLIED
LTE Band8 CH : 21625
RBW : 100KHz
VBW : 100KHz
SPAN : 10MHz
REF LEV. : 10dBm
ATT. : 20dB