5-7
Flow chart of trouble shooting
5-4 Sim Part
U300 pin4,6 = 3V ?
U300 pin5 = "H" ?
Check the circuit related to U102
END
Replace the PBA
Yes
No
No
U300 pin2,3 = 3V ?
CN301 pin3,7 = 3V ?
Replace U300
Resoldering CN301 and check open
connection from U300 to CN301
Yes
Yes
No
No
After Power ON,
Check SIMCLK Signal on CN301 pin 1
in a few second
After SIM card insert,
CN301 pin 2 = "H"(SIMRST) ?
Replace the PBA
Replace the PBA
Yes
Yes
No
No
Check the circuit around U504
(Serial EEPROM) and data stored in it
Yes
Phone can't access SIM card
Yes
Содержание SGH-N288
Страница 2: ...Samsung Electronics Co Ltd Printed in Korea 05 2001 Rev 5 1 GH68 02032A ELECTRONICS ...
Страница 12: ...Exploded Views and Parts List 1 9 1 10 Desk Top Charger DESK TOP CHARGER GH44 00186B ...
Страница 13: ...PCB Diagrams 2 1 2 PCB Diagrams 2 1 Main Top ...
Страница 14: ...2 2 PCB Diagrams 2 2 Main Bottom ...
Страница 45: ...5 16 Flow chart of trouble shooting RN1102 2 3 1 Q204 LED208 CL 150YG CD T R215 220 VBATT RI_LIGHT ...