Lenovo ThinkPad E555 (English) Hardware Maintenance Manual - Page 41
Voltage V dc, 2.5 to +3.2, Black, Ground
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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 coin-cell battery. • If the coin-cell battery discharges quickly after replacement, replace the system board. Chapter 3. General checkout 35
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 coin-cell battery.
• If the coin-cell battery discharges quickly after replacement, replace the system board.
Chapter 3
.
General checkout
35