PROPHET 3000 revision confusion

PROPHET 3000 revision confusion


there are different prophet 3000 models out there, often referred to as either 'revision 1, 2, A and/or B models'.

this is the content of a mail sent to the prophet mailing list by Brett Duggan, clearing up the existing confusion about the different revisions and PROPHET 3000s around:

Date: Tue, 2 Dec 1997 15:51:29 -0800 (PST)
From: Brett Duggan 
Subject: Re: Version Numbers
cc: SCI Sampler Mailing List 

Hello fellow Prophet 3000 owners.

There appears to be confusion among the group regarding the Revisions A 
and B of the P3000 samplers.  Please allow me to clarify.

The P3000 service manual indicates that serial numbers 11-59 of the P3000 
were all delivered to Europe.  This particular batch of machines is 
referred to as "Revision 1".  To operate properly with the P3000 
operating system software currently available, there are several 
modifications that need to be done to the guts of the machine (which the 
service manual describes).

The manufactured P3000's with serial numbers 60 and up are referred to as 
the "Revision 2" machines.  These machines were manufactured with the 
above fixes implemented at the shop.

Now, that being said...the serial number of my P3000 is in the 120's, yet 
my motherboard has a Rev. A stamp on it.  How can this be?!?!  

Simple...because we are talking about revisions of two different things.  It 
appears that the Rev. A and B stamps located on the motherboard 
are referring to the revision of the I-627 voice output IC chip used in 
your particular P3000.  According to Wine Country, only the very latest 
P3000's manufactured are Revision B P3000's.

If any of you guys out there have a P3000 with a serial number later than 
the 120's and aren't afraid to open yours up, please let me know.  I 
would like to find out if any of you actually have a P3000 that has "Rev. 
B" stamped (or taped) on the motherboard.  If you do, please locate the 
I-627 chip (located on the left edge of the motherboard) and let me know 
all the markings that appear on the chip itself.

More info to follow.

Brett D