Hello Friends!

I just "repared" a B-Drive sold by "iGTH&H inkoopbureau" in 1996, Model: SONY
MP-F17W-12. This drive didn�t work with a Sony HB-D700, but had been "tested=OK
/ MSX only".

But what I saw when I opened the case declared everything to me:

Pin 34 of the connector normaly has DiscChange signal in this Drive. So a Diode
to DriveSelect had been mounted to simulate ReadySignal (It�s OK). BUT THE
DISKCHANGE SIGNAL WAS NOT REMOVED!!!! So the two signals disturbed each other.
Terrible mistake! And those drives were sold in Tilburg e.g.!

My "Repair":

I removed that Diode. And near Pin 34 there are some soldered jumpers (SL2). I
recognized that the jumper places A and B are connected to Pin 34 and only
jumper B was in place. This jumper connected Pin 34 to DiscChange. I removed it
and sold it to place A. Now a true ReadySignal is connected to Pin 34 and the
drive works well with the Sony.

Is it possible that there are more drives that doesn�t work????

Bye

Martin




****
MSX Mailinglist. To unsubscribe, send an email to [EMAIL PROTECTED] and put
in the body (not subject) "unsubscribe msx [EMAIL PROTECTED]" (without the
quotes :-) Problems? contact [EMAIL PROTECTED] (www.stack.nl/~wiebe/mailinglist/)
****

Reply via email to