Samsung SGH-E200 Service Manual - Page 57

PCS Transmitter

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9-17. PCS Transmitter Flow Chart of Troubleshooting TX ON (5Level) Yes F100 Pin13 >= 20dBm Yes F100 pin8 >= 18dBm Yes PAM100 pin18 >= 18dBm Yes PAM100 pin1 = 1V Yes Check UCP200 END No Resolder RFS100,C103,L106 No Check F100 No pin9=H (2.6V), pin11=L Yes No Resolder or Change PAM100 Check ANT Switch control circuit Change or Resolder C115,C116,C131 No Check +VBAT or PAM control signal No U101 pin 11,12 16,17,32,33>=2.8V No Check & Resolder RFOHP signal, RF13MHz, RF PSU Part Yes Resolder U101 9-25 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization

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SAMSUNG Proprietary-Contents may change without notice
Flow Chart of Troubleshooting
This Document can not be used without Samsung's authorization
9-25
9-17. PCS Transmitter
TX ON (5Level)
Yes
F100 Pin13
>= 20dBm
No
Resolder RFS100,C103,L106
Yes
F100 pin8
>= 18dBm
Check F100
pin9=H (2.6V),
pin11=L
No
No
Check ANT Switch
control circuit
Yes
Change or Resolder
C115,C116,C131
Yes
PAM100 pin18
>= 18dBm
No
Resolder or Change PAM100
Yes
PAM100 pin1
<= -11dBm
No
Check +VBAT or PAM
control signal
Yes
U101 pin 11,12
16,17,32,33>=2.8V
U101 pin 4,5,6,7
>= 1V
No
No
Check & Resolder RFOHP
signal, RF13MHz,
RF PSU Part
Resolder U101
Yes
Yes
Check UCP200
END