5-7
Flow chart of trouble shooting and Circuit Diagram
5-4 Sim Part
U101 pin6 = 3 V ?
Resolder R103
END
Yes
No
Yes
Check the circuit around U107
(Serial EEPROM) and data stored in it
Yes
Phone can't access SIM card
Yes
U101 pin 5 = "H" ?
U101 pin 2, 3 = 3 V ?
Replace the PBA
Replace U101
Yes
No
No
CN102 pin 1, 5 = 3 V ?
Resoldering CN102
and check open connection
from U101 to CN102
No
After Power ON,
Check SIMCLK Signal on CN102 pin 3
in a few second
After SIM card insert,
CN102 pin 2 = "H(SIMRST) ?
Replace PBA
Replace the PBA
Yes
Yes
No
No
R699 = 2.9 V ?
Yes
No
Check the circuit related to U463
U463 pin1 = 3 V ?
Yes
No
Check the circuit related to
R421, R428, U649
Summary of Contents for SGH-A200
Page 2: ...Samsung Electronics Co Ltd Printed in Korea 03 2001 Rev 1 0 GH68 01895A ELECTRONICS ...
Page 12: ...Exploded Views and Parts List 1 9 1 10 Battery Charger BATTERY CHAGER GH44 00177A ...
Page 13: ...PCB Diagrams 2 1 2 PCB Diagrams 2 1 Main Top ...
Page 14: ...PCB Diagrams 2 2 2 1 1 Main RF Top ...
Page 15: ...PCB Diagrams 2 3 2 1 2 Main Base Band Top ...
Page 16: ...PCB Diagrams 2 4 2 2 Main Bottom ...
Page 17: ...2 5 PCB Diagrams 2 2 1 Main RF Bottom ...
Page 18: ...PCB Diagrams 2 6 2 2 2 Main Base Band Bottom ...
Page 46: ...Flow chart of trouble shooting and Circuit Diagram 5 16 RI_LIGHT R706 Q101 3 CN503 KPCB A SSY ...