Table of Contents
Advertisement
Flow Chart of Troubleshooting
7-13. GSM Receiver
RX ON
RF input : CH center freq
Amp : -50dBm
Yes
U201 Pin1
>= -65dBm
Yes
U201 pin12,13
>= -65dBm
Yes
U100
pin32 >= -70dBm
pin33 >= -70dBm
Yes
U100 pin6, 7, 8, 9
>= 1V
Yes
R110,R113,R114,
R115 >= 1V
Yes
Check U300
END
No
Resolder CN201, C209
No
No
Resolder C101, C102, L100
No
SAMSUNG Proprietary-Contents may change without notice
This Document can not be used without Samsung's authorization
Check U201
pin3=L,pin5=L,pin2=L
Yes
Check U100
pin10,22,28 >=2.7V
pin20 >=4.0V
Yes
7-22
No
Check ANT Switch
control circuit
Resolder U201
No
Check & Resolder
RF PMU Part
Check &Resolder
U100, RF26MHz part,
R100, R101
Advertisement
Table of Contents
