5-21
Flow chart of trouble shooting
5-14 DCS Transmit
Tx On (level : 0)
U602
Pin 2
U602
Pin 13
U609
Pin 4
U608
Pin 8
U610
Pin 5
U610
Pin 9 = 0.5~2.5 V
Resolder
U600
Check
VC1 : L
VC2 : H
VC3 : L
Change or Resolder
U602
Resolder
U609, C606
Resolder or Change
C647, R614
Resolder
U610
At
1080
MHz,
U612
At CH - 135MHz,
Resolder
U605, U612
U605
Pin 17, 18, 19, 20
Resolder
OneC(U501)
Check U605
Pin 35, Pin 38
Resolder
U605 (Pin35, 38)
Resolder
U501
No
No
No
No
No
No
No
No
No
No
Yes
Yes
Yes
Yes
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 ...