Flow chart of Troubleshooting and Circuit Diagram
5-19
5-12 GSM Receiver
Rx On
RF input : CH center freq. + 67.7 kHz
Amp. : -50 dBm
U706
Pin 8
°√
-65 dBm
U706
Pin 10
°√
-65 dBm
F602
Pin 7
°√
-70 dBm
F601
Pin 1
°√
-60 dBm
U601
Pin 53, 54
°√
-60 dBm
U601
Pin 49, 50
(225 MHz)
°√
-50 dBm
U601
Pin 43, 44
(45 MHz)
°√
-55 dBm
Check RF connector
-> resolder
Resolder &
U706 Pin 10
°√
-65 dBm
Check
VC1 : L
VC2 : L
Resolder
F602
Resolder
C621, L602, L610, C629
Resolder
F601, C610, L603
Check
C504(CH+225MHz)
°√
-20 dBm
C510(1080MHz)
°√
-20 dBm
Resolder
U501
Resolder
F604,C607,C611,C608
C613,C605,C609,R601
U601
Pin 24, 25, 26, 27
°√
40 mV
Resolder
OneC(U400), U601
Check U601
Pin 32, 33
°√
2.5 V
Pin 35
°√
0.5 V
Resolder
U601 (Pin35, Pin 32, 33)
Resolder
U400
No
No
No
No
No
No
No
No
No
No
No
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Содержание SGH-T100
Страница 2: ...Samsung Electronics Co Ltd Printed in Korea 04 2002 Rev 1 0 GH68 02699A ELECTRONICS ...
Страница 12: ...1 10 Exploded Views and Parts List 1 10 Battery Charger BATTERY CHARGER GH44 00279A ...
Страница 13: ...2 PCB Diagrams 2 1 Main Top PCB Diagrams 2 1 ...
Страница 14: ...2 2 Main Bottom PCB Diagrams 2 2 ...
Страница 40: ...5 14 Flow chart of Troubleshooting and Circuit Diagram U400 CN201 REC PWO1P PW01N 7 17 REC REC ...