The first step, after wiping-off the accumulated grime and surface corrosion, was to assess what I have.
![](https://cdn.hackaday.io/images/3839431709293936292.jpg)
Within the very large - and very heavy! - case were four cards - an MZB-3 CPU card, a VDU-2K (composite video only) 'graphics' card, an FDC-1 Floppy Disk controller (no disks though, sadly) and a QS-1 Quad Serial card. The Dynamic RAM card has either been removed, or this system never had one and just used the spare RAM on the VDU-2K board.
![](https://cdn.hackaday.io/images/8006871709294159465.jpg)
The rear panel has a number of serial connectors, originally for the swipe-card readers to connect to.
![](https://cdn.hackaday.io/images/2138581709294371912.jpg)
Behind that is the power supply, very professionally installed and using the proper Interak power-distribution board.
![](https://cdn.hackaday.io/images/6198361709294513764.jpg)
Once wiped of dirt, the inside looked relatively clean too, though sadly the backplane is not fully populated with edge connectors.
![](https://cdn.hackaday.io/images/8392611709294784801.jpg)
So, does it work? Erm, no! An initial check with no cards installed showed the power supplies to be fine, but installing a minimum set of cards displayed just a screen of random characters. It appears the system doesn't boot. Unsurprising really!
![](https://cdn.hackaday.io/images/9187471709295624920.jpg)
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