Gsm850 Transmitter - Samsung GT-S3600L Service Manual

9-12. GSM850 Transmitter

TX ON (5Level)
Check UCP200
PAM100 pin7
>= 1V
Yes
PAM100 pin10
>= 20dBm
Yes
U101 pin14
>= 20dBm
Yes
U101 pin 17
>= 20dBm
Yes
RFS100 Pin1
>= 20dBm
Yes
Ant100 Pin17
>= 20dBm
END
No
Resolder or Change C111
No
Resolder or Change PAM100
No
Resolder L110, C119,C143
No
No
Resolder L101, C107
No
Resolder L103, R104
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Check U101
No
pin10=L
pin15=H(2.6V)
Yes
9-17
Flow Chart of Troubleshooting
Change or Resolder U101
Check ANT Switch
control circuit
Check U200