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HD20

>No one has cracked the lid and 
>looked at one?
I am sitting in my shop with an open HD20 in fromt of me.  Inside we find a 
Power Supply a fan, a disk, and a board.  The disk is a Rodime Model 552. 
Connector seems to be a 26 pin affair similar to a Apple II SCSI card connector 
A DB25 (DE? ;)  SCSI  ribbon will fit here.which leads to a matching connector 
on the baord.  again a 26 pin connector.  the rest of the board is...:
Silk Screened Apple Computer c 1985 with no Rev number
socketed chips:  1st seems to be a Apple one  marked 620 VM 
B414...2365-1239....342-0343-B... c 85 Apple   Korea  it is a 28 pin one and it 
is twined by another 28 pin that is marked: 625v  
c244....VP4060-0001....344-0041-B...c Apple 1982 1983, a longer 40 pin one (not 
socketed)  marked SR0103...341-0339-a...APple 85- 8622  the next chip is a 
HM6116-3 and at the bottom (front of case) a socketed large square chip marked 
LIaII85...3440600-1
Apple 85.... TAE 8624 
Also there is a 7.5MHz occilator and a LS132 and a LS109.
Assortied capacitors, resistors, the conector for the male and female 19 pin 
floppy ports, a light bulb (not an LED, a bulb), and a power transistor seem to 
be the whole of the board.  Now, can anyone make sense of that?

-Bart