25 Sep
2005
25 Sep
'05
1:19 a.m.
On 9/25/2005 at 7:35 AM Nico de Jong wrote:
Yeah, this "feature" has given me quite some
headaches.
I use the TEAC FD-235 as the standard in my conversions systems. From new,
there
were no problems reading PC and AS/400 disks on the same drive, but
suddenly it
could stop reading PC or AS/400 disks.
At last, we found out that the error always occurred on drives assembled or
Malaysia or whereever, while the Japanese drives never had that error. A
closer
inspection showed that the malayan motor was to blame, as it couldnt keep
up
with the speed changes
I just keep a couple of 235HF's around--one is jumpered to always do 360 rpm and the
other isn't. :) I used to think that the HG's were magic, but pretty much the
same motor control circuitry is present in both types. So, to get 360 rpm, just remove
the 0-ohm resistor at W4 and ground the side that isn't connected to +5.
Cheers,
Chuck