IBM R30 password crack

I have an IBM R30 which appears to have a (I guess) a third party bios password. Shortly after the computer starts a “padlock” appears on a black screen. You have three chances to enter a password then you must restart the computer. I have tried all the generic passwords and have even pulled the batter but to no avail. I cannot find the “jumper” for that matter I cannot find the bios chip either. Any assistance would be great. Thanks in advance
Larry