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Level 3 Repair
8-39
This Document can not be used without Samsung's authorization
Check C100
≤
-65dBm ?
8-3-21. WCDMA Band8 RX
NO
NO
NO
NO
NO
NO
NO
YES
YES
F100
resolder or change
F100 CHECK
pin1,8
≥
-65dBm ?
C127, L111
resolder or change
F100 CHECK
pin6 or L111
≥
-65dBm ?
END
U300
resolder or change
NO
W900 Receiver is O.K?
YES
FEM100
resolder or change
FEM100 CHECK
pin26 or C127
≥
-65dBm
?
YES
YES
YES
YES
YES
YES
NO
NO
OSC301
change or resolder
CHECK
C303
freq :19.2MHz ?
U300
resolder or change
L113, C129, C136
resolder or change
U300, C339, C102
resolder or change
CHECK soldered
RFS100, C100, L101
Check component
soldering status OK at
L113, C129, C136 ?
Check the Voltage at
C102 = 2.85V ?
U300
{{C309 = 2.2V ?}
& {C316 = 1.3V ?}
& {C318 = 2.3V ?}
& {C320 = 1.4V ?}
NORMAL CONDITION
catch the channel?
CONTINUOUS RX ON
RF INPUT : 3013CH
AMP : -50dBm
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