Power supply diagram from Scorpion ZS 256 Turbo — ZXNet «hardware.zx»

From Konstantin Sviridov To All 3 March 2006

Hello Deniz According to the datasheet, the ZS 256 Turbo consumes 1A at +5V (no board required +12). Don’t forget about the disk drive (5`25), which consumes 0.5-1A at +5V and 0.3-0.7 at +12V In total, at a minimum (with one drive) you need 2A at +5V and 1A at +12V. Any block Power supply from a PC satisfies these requirements.

From Aleksey Naboka To All 9 March 2006

Hello Deniz Den> Unable to withstand interruptions in garage electricity (emitting acrid smoke) Den> The Scorpion ZS 256 Turbo computer has left untimely. The repairmen said, Den> that 3 resistors on the power supply burned out, and they do not know their value. Den> I found only a schematic diagram of the system board on the net. Gentlemen, Den> among you there are probably experienced users with schematics, or Den> anyone who knows what resistors are there and where they are installed, please help Den> restore this unit because got used to it terribly, despite the fact that Den> there seem to be quite a few other toys! Send information to my e-mail Den> (lds78@mail.ru) or through the forum. The best thing to do would be to buy a custom power supply, even ATX I have one myself, and by the way, it’s on the ZS Scorpion 256 Turbo+

From Alexey Korotkov To All 9 March 2006

Hello Zerios Please help me identify something. Scorpion board - identified SMUC - identified.. but what else are these two pieces of iron?? one small one says Robert... looks like a modem.. File: 03.jpg http://zx.pk.ru/attachment.php?attachmentid=2796 File: 01.jpg http://zx.pk.ru/attachment.php?attachmentid=2794 File: 02.jpg http://zx.pk.ru/attachment.php?attachmentid=2795

From Alexey Korotkov To All 9 March 2006

Hello, hardy Just don't hit me with your feet... even where the food comes from... someone picked something like that...

From Ewgeny Ivanoff To All 23 June 2006

Hello Deniz Congratulations! I would like to add some recommendations as a hardware engineer. In the event of a power failure or going through power connection options, one day it may happen that Scorpio "will die". In my practice, most often the 555TM2, which is located next to the quartz, “flies out”. B at one time, when I was struggling with the power supply, I soldered in this microchip instead socket, and in it I already changed this MS. Now I have a power supply from the PC, no problems. It’s a little difficult to “kill” Scorpio, but this little thing in the clock generator dies immediately in case of power failure.

From Victor Ronin To All 23 June 2006

Hello, ewgeny7 ewg> 555TM2, which stands next to quartz. At one time, when I was suffering ewg> with a power supply, instead of this microchip I soldered a socket, and in it already ewg> changed this MS. Now I have a power supply from the PC, no problems. Scorpio ewg> “killing” is a bit difficult, but this little thing in the clock generator will die ewg> instantly in case of power failure install something faster and more powerful, better bourgeois - 74F for example, or different there 74AC, 74AHC

From Grand To All 25 June 2006

Hello demon_zx Con> According to the datasheet, the ZS 256 Turbo consumes 1A at +5V (not on the board Con> requires +12). This is true for the Turbo+ board (“green”), for the “yellow” one it’s still +12V required: to power the VG93 (which in Turbo+ is powered by a converter voltage). Zer> ... can you provide a diagram for connecting the PC power supply to the board ... otherwise I can’t Zer> understand even where the food comes from... There is a thread on the Forum about the Scorpion ZS 256 Turbo+ board layout: http://www.zx.pk.ru/showthread.php?t=940