Hello,
You should de-solder the keyswitch from the keyboard and open it up to give it a good clean. I was doing this to my new IIe recently and I was surprised how much dust was inside some of the keyswitches that worked intermittently or were sticky.
Also, keyswitches can be tested with a...
If I can't use a command to boot from a CD drive I use a SSW 7.5.5 Network Access Disk that has been gutted of all of its non important files and has had the Apple CD extension added.
Essentially this enables you to start up your Macintosh from a floppy disk and a CD should appear on the desktop.
To make an 800k System 6.0.8 boot you need to use one of the four disk images from the Apple website. I think it is called Disk Tools, which can be used boot System 6 Macs.
You only need all four disks if you want to install System 6 onto a hard drive.
I recently serviced a later model ImageWriter II and it was a hell of a job to do. The Apple service manual is not very clear in my opinion. Every electric motor has a service point for oil.
I'll get a ribbon for it but I don't think I'll use it much.
I can't wait for the final result.
The oldest I use would be my Power Macintosh G3 minitower with Classilla running Mac OS 8.6.
One day I'll try surfing the internet with my IIfx and IIci when I get the equipment sorted.
I only installed mine a few times because I felt that it did not fit into the SE case properly. You had to force it in and when it was in did looked warped.