Acer 7730A manual 139, Testing the touchpad, To check the battery pack using hardware

3If the power-on indicator does not light up, check the power adapter’s power cord for correct continuity and installation.

4If the operational charge does not work, see “Check the battery pack” on page 139.

Check the battery pack

To check the battery pack using software:

1Open Power Management in the Windows Control Panel.

2In Power Meter, make sure that the parameters shown for Current Power Source and Total Battery Power Remaining are correct.

3Repeat the steps 1 and 2, for both battery and adapter. This helps you identify first the problem is on recharging or discharging.

To check the battery pack using hardware:

1Turn off the notebook.

2Remove the battery pack and measure the voltage between battery terminals 1 (+) and 6 (ground).

3If the voltage is still less than 7.5 Vdc after recharging, replace the battery.

Note: 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 notebook.

If the battery status indicator does not light up, remove the battery pack and let it return to room temperature. Re-install 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.

Testing the touchpad

If the touchpad doesn’t work, do the following actions one at a time to correct the problem.

1Reconnect the touchpad cables.

2Replace the touchpad.

3Replace the system board.

Important: Do not replace a non-defective FRU.

After you use the touchpad, the pointer may drift 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.

Chapter 4: Troubleshooting 139