SAMSUNG Proprietary-Contents may change without notice
Flow Chart of Troubleshooting
This Document can not be used without Samsung's authorization
9-15
9-10. Key Back Light
Main key LED does not work
Yes
PM300
pin23(D6VDD)C328
= H ?
No
Check the 'KEY_LED_TST' line
Yes
END
KEY LED
R600
LED600
A
E
O
W
U
-V
O
Y
Y
R601
LED601
A
E
O
W
U
-V
O
Y
Y
VDD_KEY_3.3V