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info on TEAC replacement drives - my story

2004-06-18 by bcomnes

Here's some notes on my short saga to replace the drive in my Prophet 
2002

I went to eBAY and searched for any of the drives listed elsewhere in 
this forum.  The only one I could find in current and past auctions 
was the TEAC FD-235HF drive. So for $3US and $7 S&H I used buy-it-now 
to acquire the drive.  Well it turns out that the FD-235HF is 
a "family" of TEAC drives and there are many models on the market. 

Next step was to try and get drive documentation.  TEAC's web site 
has quite a few PDFs available for different flavors, that's the good 
news, but the bad news is that they didn't have my 4XXX series posted 
and each drive's settings for Drive Select 0 is different.  I 
downloaded a few to see if I could extrapolate the answer but most of 
the PDFs show where DS1 is selected but provide no info on how to 
strap jumpers for DS0

so the next step was to write to TEAC tech support, BTW I chose the 
European TEAC center to send my question to.  They were prompt. I 
sent the request at 4PM PDT and by the next morning I had a PDF with 
the precise answer....the 4XXX series has a small jumper block set 
near the power connector, it is two rows of pins  A1 to E1 and A2 to 
E2.  If A1 is jumpered B1 that selects DS1, by opening that jumper 
pair and shifting it over to close A2 with B2, you reconfig the drive 
to DS0 which is required for the 2002......The other jumper is the 
floppy density detection setting which ties C2 to D2 and I left that 
stock which is Auto Detect density....it was that simple, so in went 
the drive, on went the cables and voila! my 2002 is back in 
business.  I also did not experience any of the drive light issues 
mentioned elsewhere

I will say that if you have a different FD235 series that has A to G 
pins, do not follow these directions, 

I also considered the ribbon cable wire swap method where you slice 
the wire and flip wires 10 and 12 , but I tried several sample runs 
with old cables and believe me that is hard to do....unless you are a 
competent cable builder with no drive documentation, I do not 
recommend that , although it will work if you do the cable right.

As for removing surface mount resistors and resoldering them? well 
you need a really fine soldering iron and it's like trying to solder 
an object the size of dandruff flake.....not for the faint of heart, 
hey these drives sell from between $3 and $10 each , one guy had a 
lot of 5 for $10....I say keep looking for a TEAC that has jumpers.

your other option is to drop about $80 with winecountry for a drop in 
guaranteed drive. you also eliminate any anxiety about frying some 
other component trying to rescue your system.....I almost bought the 
$80 drive 'cause hey I want those folks to be around, but when my $10 
fix did the trick, I figure that I'll just spend the $70 bucks on 
samples instead

BTW I still owe a report on whether my Roland GI-20 guitar MIDI 
interface improves by thinning out the MIDI messages...will do that 
report next week.

Brian 
PS now that I can load it, that Prophet 5 sample disk for the 2002 
rocks!

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