Lenovo ThinkPad X1 Hybrid Hardware Maintenance Manual - Page 42
If the backup battery discharges quickly after replacement, replace the system board.
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Wire Red Black Voltage (V dc) +2.5 to +3.2 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. 36 Hardware Maintenance Manual
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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.
36
Hardware Maintenance Manual