Texas Instruments Extensa 660 Series Maintenance Manual page 88

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