58
Chapter 4
From Hardware:
1.
Power off the computer.
2.
Remove the battery pack and measure the voltage between battery terminals 1(+) and 6(ground). See the
following figure.
3.
If the voltage is still less than 7.5 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.
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.
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 system board.
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.
Summary of Contents for TravelMate 8471 Series
Page 6: ...6 ...
Page 51: ...Chapter 3 43 4 Remove the wireless card 5 Remove ODD ...
Page 55: ...Chapter 3 47 2 Remove Power board ...
Page 58: ...50 Chapter 3 8 Remove the cable of LCD and Connector of Fan 9 Remove the mainboard ...
Page 61: ...Chapter 3 53 5 Remove LCM cable on the back of panel ...
Page 85: ...Chapter 6 77 ...
Page 86: ...78 Chapter 6 ...
Page 98: ...90 Chapter 6 ...
