A SERVICE OF

logo

SAMSUNG Proprietary-Contents may change without notice
FlowChartofTroubleshooting
7-40
This Document can not be used without Samsung's authorization
7-14. PCS Receiver
U101 Pin7
>= -65dBm
Resolder RFS101, C104, L123
No
Yes
RX ON
RF input : CH center freq : +67.7kHz
Amp : -50dBm
Check U101
pin2 = H,
pin4, pin8 = L
U101 pin3
>= -65dBm
F102 pin1
>= -67dBm
U102pin7,8,9,10
>= 1V
U102
pin32 >= -70dBm
pin33 >= -70dBm
Check ANT Switch
control circuit
Resolder U101
Resolder F102, C117, L111
Resolder L108, L109, L110
Check U102
pin23, 26, 31 >=
2.7V
Check & Resolder
U102, R107, R108
RF26MHz, RF PSU Part
Resolder U102
R117, R118, R119,
R120 >= 1V
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
No
No
No
No
No
END
Check U202
Resolder R117, R118, R119,
R120
No