Wcdma Band2 Rx - Samsung SM-T805 Service Manual

Level 3 Repair

8-3-21. WCDMA Band2 RX

NORMAL CONDITION
catch the channel?
Check C1026 ≤ -65dBm ?
Check the Voltage at
{C1023 > 3.6V?}
Check C1031
≥ -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 ?
WCDMA B2 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
C1031, L1019
Resolder or change
U1001
Resolder or change
U1007
Change or resolder
OSC1001
Resolder or change
UCP301
8-63
CONTINUOUS RX ON
WCDMA2 CH : 9800
AMP : -50dBm