Lte Band7 Drx - Samsung SM-T805 Service Manual

Level 3 Repair

8-3-24. LTE Band7 DRX

NORMAL CONDITION
catch the channel?
Check C1093 ≤ -65dBm ?
Check the Voltage at
{C1023 > 3.6V?}
Check C1113
≥ -65dBm ?
Check L1066
≥ -65dBm ?
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 Receiver is O.K?
END
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NO
YES
NO
NO
YES
NO
YES
NO
YES
NO
YES
NO
YES
NO
CHECK soldered
C1093, L1041, C1094,
C1119, L1042, C1092
Resolder or change
U1008, C1103
Resolder or change
C1113, C1112
Resolder or change
F1008, L1066, L1064, L1067
Resolder or change
U1007
Change or resolder
OSC1001
Resolder or change
UCP301
8-129
CONTINUOUS RX ON
RF INPUT : LTE B7: 3100CH
AMP : -50dBm