Measure the output voltage at the connector on the system board.
Pin |
Voltage (Vdc) |
+ |
+4.0 |
- |
Ground |
- If the voltage is less than +4.0 Vdc,
replace the system board.
- If the voltage is more than +4.0 Vdc, power-off the computer,
replace the standby battery, and go to the next step.
Ensure that the AC Adapter is plugged into
the computer, then power-on the computer.
Charging of the standby battery starts.
A depleted battery needs approximately 30
minutes to be recharged to the operational voltage of +3.5 Vdc.
Unplug the AC Adapter.
Verify the standby battery function by removing and installing
the battery pack during suspend mode.