Lte Band5 / Wcdma Band5 / Gsm850 Rx - Samsung SM-T805 Service Manual

Level 3 Repair

8-3-23. LTE Band5 / WCDMA Band5 / GSM850 RX

NORMAL CONDITION
catch the channel?
Check C1026 ≤ -65dBm ?
Check the Voltage at
{C1023 > 3.6V?}
Check C1030
≥ -65dBm ?
Check C1025
≥ -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 B5 / WCDMA B5 / GSM850
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
RFS1001, F1001, C1015,
L1011, C1018
Resolder or change
U1002, C1023
Resolder or change
C1030, L1016
Resolder or change
U1001
Resolder or change
U1007
Change or resolder
OSC1001
Resolder or change
UCP301
8-69
CONTINUOUS RX ON
WCDMA5 CH : 4408
LTE B5 CH : 2525
AMP : -50dBm