Gsm Receiver; Control Circuit - Samsung SGH-X600 Service Manual
Gsm telephone
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Also See for SGH-X600:
- Quick reference card (2 pages) ,
- Manual (101 pages) ,
- Service manual (44 pages)
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SG H- X600 F low Chart of Troubleshooting
12. GSM 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 102 Pin10
>= -65dBm
Y es
U 102 pin8
>= -65dBm
Y es
F101 pin1
>= -70dBm
Y es
U 103
pin32 >= - 70dBm
pin33 >= - 70dBm
Y es
U 103 pin 6, 7, 8, 9
>= 1V
Y es
R 134, R 135, R 136,
R 137 >= 1V
Y es
C heck U 200
E N D
N o
R esolder C N 101, C 101
N o
N o
R esolder F101, C 106, L 106
N o
R esolder L 102, L 103, L 104
N o
SAMSUNG Proprietary-Contents may change without notice
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C heck U 102
pin4 = L , pin7 = L
Y es
C heck U 103
pin4, 10, 22>=2.7V
Y es
7- 2
N o
C heck A N T Switch
control circuit
(Q 100,Q 101)
R esoder U 102
N o
C heck &R esolder
R 103,R 104,C 122,C 125
O SC 101, R F PSU Part
R esolder U 103
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