Thinkpads Forum

Hi all i have a old thinkpad 310e which runs very well the problem i have is the cmos battery shows up as bad when the computer boots up the cmos info its tells me to press f2 or f1 to continue i got hold of the service manuel its says there is a cmos battery on board and a replacement is available but i cant seem to locate it i took it to a local computer shop and they tried does anyone know where it is hideing on the motherboard any help would be apprciated
thanking you
Billy Grantham lincolnshire uk

MODERATOR EDIT: Removed the unnecessary bolding

Hi Billy,

You can find the location of the backup battery in the Hardware Maintenance Manual, page 62 (82nd page of the PDF file). It would appear some disassembly is required to access the location (keyboard, upper base & some miscellaneous parts).
ftp://ftp.software.ibm.com/pc/pccbbs/mobiles/310hmm.pdf

Thane

I just replaced the CMOS battery on our 310ED, described at http://forum.thinkpads.com/viewtopic.php?t=38902

It was not a trivial task. I recommend you get the hardware manual to do it (link in preceding post), unless you know a whole lot more about laptops than I do.

Happy tinkering.
Howard

I will eventuall need to replace the battery but I wondered if I could ontinue to operate the computer without the battery, it seems like everything still works I can start windows 98 just fine and I have notebook manager installed.

The on thing I can't change or keep changed is having the PCMCIA slot be 32 bit cardbus enabled thus I can't get my PCMICA cards which need that to work.

Is there a work around or a way to enable the 32 bit cardbus from the command line.

Did you reinstall the IBM drivers when you installed Win 98? If not, you may need to install the PC card driver, available at http://greyghost.dyndns.org/pccbbs/mobiles/pccardup.exe It says it is for Win 95, but I used it after putting Win 98SE on our TP 310ED, and the PCMCIA card slots work properly with modem, network, and USB adapter cards.