Samsung GT-S5230 - GSM Receiver

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Flow Chart of Troubleshooting
9-16
9-10.
GSM Receiver
RX ON
Cell Power
:-60
dBm
U100 Pin
17
≥
-65
dBm
①
Yes
Resolder U100
,
L105, C116
No
Yes
No
Check MODULE100
pin
10,
pin
16 = L
U100 VC1, VC2
≥
-68
dBm
Check ANT Switch
control circuit
No
②
Yes
Resolder U100
Yes
③
U100
pin
13
≥
-70
dBm
pin
5,6
≥
-70
dBm
Resolder L114
,
L116
,
L11
8
No
Yes
Check UCP200
END