Sony FDD

[gamma ray]

Does anyone has the pin layout of an internal floppy disk drive of Sony,
model MPF920. Where is the location of pin1 at the 34-pin connector.
Is it close to the power plug or is it at the other side?

I have a brandnew FDD over here, but I can't get it to work. I tried
another brand FDD (Compaq) on the same motherboard which was
working fine.

Thx.

 

[Pen]

Floppies normally away from the power
connector. What is always correct is that
if the keying slot is on the top of the
drive connector, then the pin 1 is to the left
of it(this is the norm). If on the bottom,
then it would be on the right(unusual).

 

[gamma ray]

I checked this with my Compaq FDD. There is a keying slot at the bottom,
but the pin1 is still at the left!

 

[Pen]

Then look on the pc board. pin 1 is
usually marked. Actually I checked my Teac and
it's bottom left, so go with that. If it's
incorrect all that happens is the drive light
comes on steadily at boot and it won't work.

 

[Andy]

Pin 3 is the missing pin.
<http://www.newegg.com/Product/Showi...ernal+Floppy+Drive+Windows+98SE/+ME/+2000/+XP>

 

[gamma ray]

I have another model of sony fdd: MPF920-E of the year 2004
instead of: MPF920-Z of the year 2002. The PCB board layout
is completely different. With this newer model the motor is
mounted between the power plug and the 34-pin plug, and this
pin is not missing at the connector.


Floppy Disk Controller IDC-34 Male
pin assignment pin assignment
1 GND 2 Density Select
3 GND 4 nc (reserved)
5 GND 6 nc (reserved)
7 GND 8 Index
9 GND 10 Motor Enable A
11 GND 12 Drive Sel B
13 GND 14 Drive Sel A
15 GND 16 Motor Enable B
17 GND 18 Direction
19 GND 20 Step
21 GND 22 Write Data
23 GND 24 Floppy Write Enable
25 GND 26 Track 0
27 GND 28 Write Protect
29 GND 30 Read Data
31 GND 32 Head Select
33 GND 34 Disk Change