Recent content by franklyn

The circuit diagram is correct. Is there a list of replacement SMD transistors (EU types) for the original types? They must, of course, have the same pinout. I destroyed the Q9 while trying to control it manually and replaced it with a BC557 for testing purposes.There's an internal switch in...

The Q9 transistor is ok. I must test more, I will see the Eject signal comes from Pin9 of the Floppy connector ...

Inside the bottom of the IIcx case, there is a chrome-like coating—and sure enough, when you test it, it conducts electricity for shielding purposes. I'm a bit nervous about placing the Q700 motherboard in there without a piece of cardboard in between ...?

The schematic isn't quite accurate, because on my floppy drive, it isn't transistor Q7 that controls the eject motor, but rather Q9...

Yes, I currently have a Q650 motherboard in my Q700 case. Reinstalling the original Q700 board makes sense, as the IIcx case features a third NuBus slot—which would provide a better fit in terms of slot configuration.

Thanks

The hardest part was not removing the inner metal shielding plate to work on it.

... thanks but I can not find it.

Looking for the schematics from a Sony 2MB Floppy from a Macintosh IIcx ... The Floppy works fine but the ejector motor isn't running. It's not the gearbox or its plastic gears in it.

The free spaces between the interface sockets could be filled/glued in with 3D printed parts, then filled with plastic filler and painted ...? If it turns out well, perhaps even a Quadra 650 motherboard could be installed because of the three Nubus slot slots?

Thanks ... I replace a RIFA cap and tested as good.

How can I test a IIcx power supply without a motherboard? I'm connecting the +5V output to a dummy resistor/load, but how do I turn it on?

I bought something... I disassembled the floppy drive and removed the rust from the metal parts. I didn't paint the parts to prevent them from rusting again, but just oiled them lightly. I cleaned all the remaining parts and re-greased and oiled the mechanism. The Quadra booted from the test...

There is no extra video ram so check all Simm sockets contacts ...

I have system 7.5.3 or 7.6.1 installed on a Quadra 700 motherboard, and I'm having a problem where the computer doesn't reset or shut down during a software reset or shutdown. The desktop remains frozen, and the mouse cursor still moves, but I can no longer select or use any menus. It works...