5-18
Flow chart of trouble shooting
5-11 GSM Receiver
Rx On
RF input : CH center freq. + 67.7 kHz
Amp. : -50 dBm
U602
Pin 2
U602
Pin 9
U603
Pin 5
U604
Pin 2
U605
Pin 53, 54
U605
Pin 49, 50
(225 MHz)
U605
Pin 43, 44
(45 MHz)
Check IF connector
- > resolder
Resolder &
U602 Pin 9
Check
VC1 : L
VC2 : L
VC3 : H
Resolder
U603
Resolder
U605, C695, C629,
C625, L630, L613
Resolder
U604, L605. L621,
L622, L623
Check
C601(CH+225MHz)
C636(540MHz)
Resolder
U612
Resolder
U601, C603, C607,
C609, L604
U605
Pin 24, 25, 26, 27
Resolder
OneC(U501), U605
Check U605
Resolder
U605 (Pin32, 33, 35)
Resolder
U501
No
No
No
No
No
No
No
No
No
No
No
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Содержание SGH-N200
Страница 2: ...Samsung Electronics Co Ltd Printed in Korea 06 2001 Rev 5 1 GH68 02049A ...
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Страница 12: ...PCB Diagrams 2 1 2 PCB Diagrams 2 1 Main Top ...
Страница 13: ...PCB Diagrams 2 2 2 2 Main Bottom ...
Страница 44: ...5 16 Flow chart of trouble shooting RN1102 2 3 1 Q204 LED208 CL 150YG CD T R215 220 VBATT RI_LIGHT ...