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78 Chapter 4
If the charge indicator does not light up, replace the battery pack. If the charge indicator still does not light up,
replace the AC / DC charger board.
Touchpad Check
If the touchpad does not work, follow the procedures one at a time to correct the problem. Do not replace a non-
defective FRU.
1. Reconnect the touchpad cables.
2. Replace the touchpad.
3. Replace the system board.
After you use the touchpad, the pointer drifts on the screen for a short time. This self-acting pointer movement will
occur when a slight, steady pressure is applied to the touchpad pointer. This symptom is not a hardware problem.