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Home Forums 68kMLA Powering a Power CD? — #11
Post #11 by Trash80toHP_Mini
Source Forum68kMLA
CategoryPeripherals
Post DateMon, 9 Nov 2009 - 20:05
Original URLhttps://68kmla.org/bb/threads/powering-a-power-cd.18963/
Post
Rummaging Complete: [:)] ]'>

Take-apart complete: [;)] ]'>

DATA: equivocal: :scrambled:

As you can see, there's a whole lotta stuff inside the PowerCD's Base Unit. Including a Power Supply in the top section and a CD controller/SCSI Interrface PCB in the bottom of this simple lil' unit!

8-o



I checked the pinouts for Apple's 25 pin bastardization of the SCSI spec and the pins w/ lines running from them should be the ground lines on the diagram. Anything color coded in orange is a strong link to ground. Anything color coded in pencil is a tenuous link to ground. This led me to believe there was a PCB inside the Power Unit. Lo and behold, there's one whole heck of a lot goin' on in there as stated above. Someone will need to use a M <-> F DB-25 adapter as shown above, or a hacked ribbon cable, to figure out what voltages are being fed to the CD "spinner" section over which lines. It'd probly be necessary to noodle out which lines are data and control lines for this low level CD spinner to the MLB interface. It sure ain't SCSI! I'm not convinced that the "spinner" section will even work as a CD player w/o the circuitry present in the base unit's MLB.



Sorry about the "bad" news, comrade, it might work out, but I wouldn't put any money on that proposition.

mp.ls