Pcs Receiver - Samsung SGH-D500 Service Manual

F low Chart of Troubleshooting

16. PCS Receiver

R XO N
R Fin p u t : C Hcen ter freq: +67.7k H z
A m p: -50d B m
Y es
U 100 Pin7
>= -65dB m
Y es
U 100 pin3
>= -65dB m
Y es
F101 pin1
>= -67dB m
Y es
U 102
pin32 >= -70dBm
pin33 >= -70dBm
Y es
U 102 pin7, 8, 9, 10
>= 1V
Y es
R 112, R 113, R 114,
R 115 >= 1V
Y es
C heck U 200
E N D
N o
R esolder R FS100, C 102, L 602
N o
N o
R esolder F101, C 115, L 105
N o
R esolder C 112, C 119, L 104
N o
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C heck U 100
pin2 = H ,
pin4, pin8 = L
Y es
C heck U 102
pin23, 26, 31 >=
2.7V
Y es
7- 27
N o
C heck A N T Switch
control circuit
R esolder U 100
N o
C heck &R esolder
U 102, R 103, R 104
R F26M H z, R F PSU Part
R esolder U 102