3. Remove the battery pack (see “1010 Battery pack” on
page 58 ).
4. Remove the backup battery (see “Checking the battery
pack” on page 37).
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.
Checkout guide
38
ThinkPad A22m wireless models
Summary of Contents for ThinkPad A22m 2628
Page 26: ...Laser compliance statement 22 ThinkPad A22m wireless models...
Page 71: ...3 Removing and replacing a FRU ThinkPad A22m wireless models 67...
Page 74: ...2 2 3 4 5 continued Removing and replacing a FRU 70 ThinkPad A22m wireless models...
Page 101: ...3 3 4 3 3 Removing and replacing a FRU ThinkPad A22m wireless models 97...
Page 140: ...Part Number 24P2911 1P P N 24P2911...