Thinkpa R30 CMOS Problem

[jleach48]

Hi, I bought an Thinkpad R30 from someone who said all it needed was the CMOS battery replaced, which I think is also referred to as a backup battery. Well I replaced the watch type battery and I am still getting the following errors:

0250 System Battery is dead
0251 System CMOS Ckecksum is bad
0270 Real Time Clock error

I went into the Bios and went to the date and time, it has 1/31/81 for date but there is no time. Any thoughts? Thanks Joe

[virge]

After you check to make sure you CMOS is good, make sure the solder holding the battery holder down is good. I had those exact same symptoms on my R30 which was fixed by removing the battery holder and soldering leads directly to the board. See:

http://forum.thinkpads.com/viewtopic.php?t=50132