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7-14. GSM850 Transmitter
TX ON (5Level)
Yes
F101 Pin8
> = 20 d B m
No
F101 pin11
> = 18 d B m
No
PAM100 pin10
> = 18 d B m
No
PAM100 pin9
< = -11 d B m
No
U104 pin5
< = -15 d B m
No
U102 pin 6 , 7 , 8 , 9
> = 1V
No
Check UCP200
END
Yes
Resold e r RFS100, C 103, L 141
Yes
Yes
Resol d e r L138 , C152
Yes
Yes
Yes
SAMSUNG Proprietary-Contents may change without notice
This Document can not be used with
Check U100
pin12 = H (2.68V)
pin9 , 1 3 = L
No
Yes
Check PAM100
pin 3 , 4 , 5 , 6 , 7 OK ?
No
Check U104 , U 105
pin 4 = 0V
No
Check U102
pin23, 26, 31
> = 2 .7V
No
7-26
out Samsung' s authoriz a tion
Flow Chart of Troubleshooting
Yes
Change or Resol d e r F101
Check ANT Switch
control circuit
Resold e r or Change PAM100
Check +VBAT or PAM
control signal
Yes
Resold e r U104, U 105,
F102 , C 141 , C 142 , L 117
Check UCP200
Yes
Resol d e r U102
Check & Resol d e r RFLO
signal, RF26MHz ,
RF PSU Part
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