Samsung GT-P5100 Service Manual page 62

8-3-17. GSM1900/ WCDMA Band2 RX
NORMAL CONDITION
catch the channel?
Check C121 ≤ -65dBm ?
Check the Voltage at
C103 =VOUT_CHARGER
Check C102
≥ -65dBm ?
Check component
soldering status OK at
F100
Check F100 PIN 16, 17
≥ -65dBm
Check the voltage at
{C150 = VBAT_RF ?}
& {C149 = 2.85V ?}
& {C145 = 2.65V ?}
& {C151 = 1.8V?}
& {C152 = 1.2V?}
Check the freq. at C139
: 26MHz ?
WCDMA Band2 / GSM1900
Receiver is O.K?
END
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NO
YES
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YES
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YES
NO
YES
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YES
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YES
NO
CHECK soldered
L108,C121, RFS100
Resolder or change
U101, C103
Resolder or change
Check C102
Resolder or change
F100
Resolder or change
F100
Resolder or change
U104
Change or resolder
OSC100
Resolder or change
UCP300
8-43
Level 3 Repair
CONTINUOUS RX ON
RF INPUT : 9880CH
AMP : -50dBm