How do I fix error codes 601 & 301 on my ThinkPad 600E?

What do the error codes 601 & 301 mean? I know 601 is the diskette drive. Does it mean that the diskette drive is bad or does it mean a motherboard problem? I know that 301 refers to the keyboard. Could it be that the little red cover is missing or is that also a motherboard problem? Thanks for any bright ideas!