1. Remove the battery pack. See “1010 Battery” on page 65.
2. Remove the coin-cell battery. See “1050 Coin-cell battery” on page 72.
3. Measure the voltage of the coin-cell battery. See the following illustration.
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.
28
ThinkPad P50 Hardware Maintenance Manual
Summary of Contents for ThinkPad P50
Page 1: ...ThinkPad P50 Hardware Maintenance Manual ...
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Page 11: ...DANGER DANGER DANGER DANGER DANGER Chapter 1 Safety information 5 ...
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Page 13: ...PERIGO PERIGO PERIGO PERIGO Chapter 1 Safety information 7 ...
Page 14: ...PERIGO PERIGO PERIGO PERIGO DANGER 8 ThinkPad P50 Hardware Maintenance Manual ...
Page 15: ...DANGER DANGER DANGER DANGER DANGER DANGER Chapter 1 Safety information 9 ...
Page 16: ...DANGER VORSICHT VORSICHT VORSICHT VORSICHT 10 ThinkPad P50 Hardware Maintenance Manual ...
Page 17: ...VORSICHT VORSICHT VORSICHT VORSICHT Chapter 1 Safety information 11 ...
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Page 124: ...Part Number SP40J71944_01 Printed in China 1P P N SP40J71944_01 1PSP40J71944_01 ...