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Checking the backup battery
Do the following:
1.
Power off the computer, and unplug the ac adapter from it.
2.
Turn the computer upside down.
3.
Remove the battery pack (see “1010 Battery pack” on page 71).
4.
Remove the backup battery (see “1120 System board, fan assembly, and backup
battery” on page 92).
5.
Measure the voltage of the backup battery. See the following figure.
Red (+)
Black (-)
Wire
Voltage (V dc)
Red
+2.5 to +3.2
Black
Ground
v
If the voltage is correct, replace the system board.
v
If the voltage is not correct, replace the backup battery.
v
If the backup battery discharges quickly after replacement, replace the system
board.
General checkout
43
Содержание 28762JU
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Страница 91: ...Table 15 Removal steps of keyboard continued 3 4 5 6 7 7 8 Removing and replacing a FRU 83 ...
Страница 113: ...Table 26 Removal steps of LCD panel hinges and LCD cable continued 6 7 8 Removing and replacing a FRU 105 ...
Страница 118: ...Overall 1 2 3 4 5 6 7 8 9 10 19 20 18 17 16 15 14 13 12 11 110 ThinkPad X100e Hardware Maintenance Manual ...
Страница 130: ...LCD FRUs 1 4 3 2 5 7 6 122 ThinkPad X100e Hardware Maintenance Manual ...
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Страница 146: ...Part Number 63Y0640_01 1P P N 63Y0640_01 ...