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Flow Chart of Troubleshooting
9-32
9-16. PCS Receiver
DUF100 Pin8
>= -65dBm
Resolder
RFS101, C101, L104
END
No
Yes
RX ON
RF input : CH center freq : +67.7kHz
Amp : -50dBm
Check DUF100
pin10,pin12 = L
pin9 = H (2.68V)
DUF100 pin3,4
>= -65dBm
U102 pin7,8,9,10
>= 1V
U102
pin32 >= -70dBm
pin33 >= -70dBm
Check ANT Switch
control circuit
Resolder DUF100
Resolder L107, C110, C111
Check U102
pin 23,26,31
>= 2.7V
Check & Resolder
U102, R109
RF26MHz, RF PSU Part
Resolder U102
Yes
Yes
Yes
Yes
Yes
No
No
No
No
No
Check UCP200
Содержание SGH-P200
Страница 30: ...8 PCB Diagrams 8 1 Top ...
Страница 31: ...PCB Diagrams 8 2 Bottom ...