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SAMSUNG Proprietary-Contents may change without notice
Flow Chart of Troubleshooting
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7-
25
7-16. DCS Transmitter
TX ON (0Level)
Resolder C218, L213, C210
Check ANT Switch
control circuit
Change
or Resolder U201
Check U201
pin3=L,pin5=H,pin2=L
Yes
Resolder CN201, C209
END
Check U300
U100 Pin6, 7, 8, 9
>= 500mV
OSC100 pin5
>= 6Bm
U200 Pin3
>= 3dBm
U200 Pin15
>= 20dBm
U201 Pin6
>= 20dBm
U201 Pin1
>= 20dBm
Resolder U100
or check Txcpo(R112)
Check & Resolder
RF PMU part
Check U100
pin4 >= 4.0V
pin22, 28 >= 2.7V
Resolder R205
No
Yes
Yes
Yes
Check U200
+VBATT(pin17) OK?
Resolder or change U200
or check PAM control
signal
Check +VBATT
No
No
No
No
No
Yes
Yes
Yes
Yes
Yes
No
No
No