Texas Instruments Extensa 660 Series - Page 88

5-28 Troubleshooting Procedures
Figure 5-12 LED Indicator Function Troubleshooting Diagram
Check Caps Lock LED
Check CN11 Pin4 CAP#=0V
Check NUM Lock LED
Check CN11 Pin7 NUM#=0V
HDD Read/Write LED
Check CN7 Pin 3
END
Yes
No
Yes
Yes
No
No
Check CD-ROM, FDD, & LED
Check Power Management LED
Check CN11 Pin2 CD/FDD/HDD-
LED#=OV, while any device access
Check Con11 Pin5 PMUEN#=0V, while
power management (BIOS) enable
Yes
Yes
No
No
Clock Suspend LED Blanking
Check Charge LED
Check CN11 Pin6
SUS-LED#=5V~0V, 0V~5V
Check CN11 Pin8 CHarge=5V, while
battery is charging
Yes
No
Yes
11
LED Indicator Function
Troubleshooting