Gsm1800 Rx; Normal Condition - Samsung SM-T805 Service Manual

Level 3 Repair

8-3-19. GSM1800 RX

NORMAL CONDITION

catch the channel?
Check C1026 ≤ -65dBm ?
Check the Voltage at
{C1023 > 3.6V?}
Check C1029
≥ -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 ?
GSM1800 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
C1025, C1029
Resolder or change
U1001
Resolder or change
U1007
Change or resolder
OSC1001
Resolder or change
UCP301
8-57