Acer Extensa 500, Руководство по обслуживанию

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Chapter 4 77
2. Remove the battery pack and measure the voltage between battery
terminals 2(+) and 7(ground). See the following figure
3. If the voltage is still less than 8.0 Vdc after recharging, replace the battery.
To check the battery charge operation, use a discharged battery pack or a
battery pack that has less than 50% of the total power remaining when
installed in the computer.
If the battery status indicator does not light up, remove the battery pack and
let it return to room temperature. Reinstall the battery pack.
If the charge indicator still does not light up, replace the battery pack. If the
charge indicator still does not light up, replace the DC/DC charger board.
Touchpad Check
If the touchpad doesn’t work, do the following actions 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 touchpad.
After you use the touchpad, the pointer drifts on the screen for a short time.
This self-acting pointer movement can occur when a slight, steady pressure
is applied to the touchpad pointer. This symptom is not a hardware problem.
No service actions are necessary if the pointer movement stops in a short
period of time.