5-19
Flow chart of trouble shooting
5-12 GSM Transmit
Tx On (level : 5)
U602
Pin 2
U602
Pin 7
U607
Pin 4
U608
Pin 1
U610
Pin 1
U610
Resolder
U600
Check
VC1 : H
VC2 : L
VC3 : L
Change or Resolder
U602
Resolder
U607, C611
Resolder of Change
C646, R613,
Resolder or Change
U610
At
1080
MHz,
U612
At CH - 270MHz,
Resolder
U605, U612
U605
Pin 17, 18, 19, 20
Resolder
OneC(U501)
Check U605
Resolder
U605 (Pin35, 38)
Resolder
U501
No
No
No
No
No
No
No
No
No
Yes
Yes
Yes
Yes
No
Yes
Yes
Yes
Yes
Yes
Yes
Check
Ant. S/W, Control Circuit
Check
U608 : +VBATT
Pin 2 (APC)
OK?
Resolder or
Change U608
Yes
Check +VBATT
or APC Control
No
Summary of Contents for SGH-N288
Page 2: ...Samsung Electronics Co Ltd Printed in Korea 05 2001 Rev 5 1 GH68 02032A ELECTRONICS ...
Page 12: ...Exploded Views and Parts List 1 9 1 10 Desk Top Charger DESK TOP CHARGER GH44 00186B ...
Page 13: ...PCB Diagrams 2 1 2 PCB Diagrams 2 1 Main Top ...
