Black and white pictures

SOURCE: Minolta Maxxum 5000

I had the same problem with a maxxum 7000. Traced it to a bit of corrosion in the battery pack. It let just enough power through to run the computer, but upon releasing the shutter, it shut off.

You might check that. corrosion can be cleaned with vinegar.

-John

SOURCE: Minolta Maxxum 400si 35mm SLR Camera manual

Here you go:
http://www.nodevice.com/user_manual/konica_minolta/film_cameras/dynax_500si_maxxum_400si_rz_430si_450si_alpha_303si.html

SOURCE: Film loading problem Minolta Maxxum 430SI RZ

not solution, but a suggestion, something to look for/try.
i think it is trying to tighten it and take up the slack in the spool. there might be little red dots or something like that on the inside when you open it up. you are supposed to have the film go to a certain spot before you close it. normally, the film is sticking out the right length, but you might have to pull it out extra first. you might also have to tuck the end of the film behind a roller or in front of a roller before you close it. look for really tiny diagrams inside the camera, or maybe just tiny arrows indicating which way the film is supposed to wind. good luck with your class!

SOURCE: Film won't load on Minolta 400si Maxxum Camera

My daughter took the camera to her photography teacher he was able to load the film by wrapping more film around the roller. It's not as easy to load as my Canon. I thought we had put plenty of film around it already. Oh well, it's working anyway.

SOURCE: Blinking "0" -- Doesn't Shoot

Try new battery.

If still not working try opening back cover in dark environment see if camera film will reset.