Dcs/Pcs Transmitter - Samsung SGH-E690 Service Manual

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9-17. DCS/PCS Transmitter

TX ON (5 Level)
Yes
MODULE1 pin10
<= 13 dBm
No
MODULE1 pin12
<= 13 dBm
No
U100 pin10
<= 13 dBm
No
C107,C108 > 3 V,
TA101, F101 >
3.5V
Yes
U100 pin 10
>= -8dBm
Yes
U103 pin 1,2,3,4
>= 500mV
No
END
Yes
Resolder RFS100, C102, L100
Yes
Yes
Resolder L113,C131,C124
No
No
Resolder or Change U100
Yes
or Check pins related to U101
SAMSUNG Proprietary-Contents may change without notice
This Document can not be used without Samsung's authorization
Check MODULE1
pin14 = L ,
pin13 = H(2.68V)
No
Yes
Check
VBAT
No
Resolder U101
9-36
Flow Chart of Troubleshooting
Yes
Change or Resolder
MODULE1
Check ANT Switch
control circuit
Resolder or Change U100
Check +VBAT or PAM
control signal

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