Lenovo 20U1 Hardware Maintenance Manual page 34

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• If the voltage is correct, replace the system board.
• If the voltage is not correct, replace the coin-cell battery.
• If the coin-cell battery discharges quickly after replacement, replace the system board.
28
L14 Gen 1 and L15 Gen 1 Hardware Maintenance Manual
Wire
Red
Black
Voltage (V dc)
+2.5 to +3.2
Ground

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