Lenovo E10 manual If the voltage is correct, replace the system board, Wire, Voltage V dc

5. Measure the voltage of the backup battery. See the following figure.

Wire	Voltage (V dc)
Red	+2.5 to +3.2
Black	Ground

•If the voltage is correct, replace the system board.

•If the voltage is not correct, replace the backup battery.

•If the backup battery discharges quickly after replacement, replace the system board.

Chapter 3. General checkout 35