FIC a440 Service Manual

 

Troubleshooting and Repair 

 

FIC A440 Series Service Manual 

6-25

 

6.4.21  LED Indicator Function Check 

 

21

LED Indicator check

END

YES

Check Caps Lock LED

Check U26, Pin33, CapsLED#

= 0V

YES

Check Num Lock LED

Check U26, Pin32, NumLED#

= 0V

Check Scroll Lock LED

Check U26, Pin31, ScrLed# =

0V

Check IDE Access LED

Check CN11, Pin4, HddLED# =

0V

YES

Check FDD LED blinking

Check CN11, Pin39, MTR0# =

0V

YES

Check Battery Low LED

Check Audio board CN7,

Pin13, BATL# = 0V

YES

Check Suspend LED

blinking

Check Audio board CN7, Pin7,

SusLED# = 0V`5V, 5V~0V

YES

YES

NO

NO

NO

NO

NO

NO

NO

Check Charge LED

Check Audio board CN7, PIN9,

OHGLED = 5V

YES

NO