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IBM-AUSTRIA - PC-HW-Support 30 Aug 1999 |
Checking the Backup Battery (TP 600/600E - 2645)
Checking the Backup Battery
- Power off the computer and unplug the AC Adapter from the computer.
- Turn the computer upside down.
- Remove the DIMM cover and backup battery (see 'Backup Battery').
- Measure the voltage of the backup battery. See the following figure:
NOTE: Be careful not to measure the wrong side of the
backup battery.
| Wire |
Voltage (Vdc) |
| 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 backup battery.
- If the backup battery discharges quickly after replacement, replace the system board.
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