Flow chart of trouble shooting
5-20
5-11 GSM Receiver
Rx On
RF input : CH center freq. + 67.7 kHz
Amp. : -50 dBm
U602
Pin 8
U602
Pin 10
U604
Pin 1
U634
Pin 1
U605
Pin 53, 54
U605
Pin 49, 50
(225 MHz)
U605
Pin 43, 44
(45 MHz)
Check IF connector
- > resolder
Resolder &
U602 Pin 10
Check
VC1 : L
VC2 : L
Resolder
U604, C623, L609
Resolder
U605, C620, C637, L616
Resolder
U634, C621, L606
Check
C600(CH+225MHz)
C636(1080MHz)
Resolder
U612
Resolder
U601, C604, C605,
L603, C612
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-N625
Страница 2: ...Samsung Electronics Co Ltd Printed in Korea 08 2002 Rev 1 0 GH68 03123A ELECTRONICS ...
Страница 9: ...PCB Diagrams 2 1 2 PCB Diagrams 2 1 Main Top ...
Страница 10: ...PCB Diagrams 2 2 2 2 Main Bottom ...
Страница 27: ...5 Flow chart of trouble shooting 5 1 Power ON 5 1 Flow chart of trouble shooting ...
Страница 30: ...Flow chart of trouble shooting 5 4 VCC VCC R509 C526 SIMPWDN_BOOT F_WP SYSRST GPIO3 DTR1 F ...
Страница 35: ...5 9 Flow chart of trouble shooting 5 5 Microphone Part ...
Страница 36: ...Flow chart of trouble shooting 5 10 C532 U501 R525 R527 C561 C560 MIC VX 1P C553 R530 VX 1N R531 C538 VCC ...
Страница 43: ...5 17 Flow chart of trouble shooting R215 1K 100K R217 1 3 2 Q201 MMBT2222AWT1 BACKLIGHT B_LIGHT ...
Страница 44: ...Flow chart of trouble shooting 5 18 5 10 Melody Part ...