Checking The Backup Battery - Lenovo ThinkPad Z61e Hardware Maintenance Manual
(mt 0660, 0672, 0673, 0674, 0675, 9450, 9451, 9452, and 9453)
Hide thumbs
Also See for ThinkPad Z61e:
- Service and troubleshooting manual (94 pages) ,
- Dizüstü bilgisayar tanıtma ve kullanma kılavuzu (88 pages) ,
- Manual de assistência e resolução de problemas (84 pages)
Table of Contents
Advertisement
Checkout guide
3. If the voltage is less than +11.0 V dc, the battery pack has been discharged.
4. If the voltage is more than +11.0 V dc, measure the resistance between battery
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 58).
4. Remove the backup battery (see "1140 Backup battery" on page 78).
5. Measure the voltage of the backup battery. See the following figure.
Red (+)
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
32
MT 0660, 0672, 0673, 0674, 0675, 9450, 9451, 9452, and 9453
1(-)
2(-)
3
4
5
7(+) 6(+)
Note: Recharging will take at least 3 hours, even if the indicator does not turn
on.
If the voltage is still less than +11.0 V dc after recharging, replace the battery.
terminals 3 and 2. The resistance must be 4 to 30 K .
If the resistance is not correct, replace the battery pack. If the resistance is
correct, replace the system board.
Black (-)
board.
Terminal
Voltage (V dc)
1, 2
Ground (−)
6, 7
+ 0 to + 12.6
Wire
Voltage (V dc)
Red
+2.5 to +3.2
Black
Ground
- Quick Links:
- Specifications
Hide quick links:
Advertisement
Table of Contents
