Chinon 5.25 floppy (fz-506) jumpers

  • Thread starter Thread starter Gil Lembree
  • Start date Start date
G

Gil Lembree

I have a Chinon 5.25 floppy fz-506 drive, and I am trying to get it to
work with an IBM clone pc. Someone gave the drive to me. I forget who,
and I don't know what computer it came from.

It has a set of 13 jumpers which I believe need to be adjusted to get
this drive to work. The reason I believe this is because I have another
5.25 drive that works just fine when I physically install it exactly as I
am trying to install this one. They are both 1.2MB drives.

The labels of the 13 jumpers are:
13 DKC
12 RDY
11 MS (with a bar over the MS --> Not MS?)
10 MS
9 (a LH square bracket is beside the 8 and 9
8 jumper labels, and there is no other marking)
7 HL
6 IU
5 DS 3
4 DS 2
3 DS 1
2 DS 0
1 TERM

Does anyone know how to set the jumpers on this drive?
Or, can anyone tell me what the labels mean?
 
Chinon no longer supports this drive. However, I
would try the DS(usually drive select) lines first.
Floppies typically were strapped as "B" and the
cable twist then made the end drive into an "A".
So try DS 1.
TERM is termination, so I'd try that on if
you're in the end connector or off if in the middle one.
RDY normally is Ready.
As far as the others I'm not familiar with them.
Good luck.
 
Chinon no longer supports this drive. However, I
would try the DS(usually drive select) lines first.
Floppies typically were strapped as "B" and the
cable twist then made the end drive into an "A".
So try DS 1.
Click to expand...

Yes, thanks. I got it to work with DS 1 set and the others not set.
TERM is termination, so I'd try that on if
you're in the end connector or off if in the middle one.
Click to expand...

Right. TERM not set worked -- I have a floppy 3.5 drive as A.
RDY normally is Ready.
As far as the others I'm not familiar with them.
Good luck.
Click to expand...

Thanks for the help!!!
 
DS 1 worked.
TERM off worked, I have a 3.5 floppy as A.

Thanks for the help !!!!!
 
In comp.sys.ibm.pc.hardware.misc Folkert Rienstra said:
Just like you should have known from the other thread.
Click to expand...
And the other thread (mine) was about that exactly same Chinon FZ-506!
I know about the 13-jumper row.
Now that Chinon 5.25" is A: working perfectly, with B: as 1.44M. And....
the 8" drive problem is now solved, too!
I unmounted it from the cabinet, and noticed there are 2 empty sockets for
resistor packs to be installed.
Fortunately, its twin brother (which was supposed to be the end unit on
this original dual-drive subsystem) has both resistor packs installed. It
was jumpered DS0, but I jumpered DS1 and it works perfectly! So the 8"
drive has to have its resistor packs installed to work with the special
controller.

This said, does anyone know where these 16-pin "blue chip" resistor could
be found? Are they generic, or specific to the drive manufacturer?

Thanks.
Louis-Luc
 
The resistor packs are generic, They just have 8
resistors inside. Available through most parts
stores. Value usually printed on the top.
 
Gil Lembree said:
The labels of the 13 jumpers are:
13 DKC
12 RDY
11 MS (with a bar over the MS --> Not MS?)
10 MS
9 (a LH square bracket is beside the 8 and 9
8 jumper labels, and there is no other marking)
7 HL
6 IU
5 DS 3
4 DS 2
3 DS 1
2 DS 0
1 TERM

Does anyone know how to set the jumpers on this drive?
Or, can anyone tell me what the labels mean?
Click to expand...

It's been a long time, but here are some suggestions from memory:

13 DKC Disk Change
12 RDY Ready

This determines whether pin 34 of the floppy ribbon cable is used to
indicate Drive Ready (RDY) or Disk Changed (DKC.) IIRC, the PC standard
is to use RDY, so if DKC is open (=no jumper) and RDY is closed
(jumpered) leave this as it is.

11 -MS Motor Select
10 MS

Selects whether the drive motor is turned on by the Drive Select or
Motor On signal from the floppy controller. Leave this as it is.

9
8

No idea about those.

7 HL Head Load

This is for drives which have an electromagnet to raise and lower the
head onto the disk surface. If yours has one, jumper this link,
otherwise leave open. If in doubt, leave it as it is.

6 IU In Use

Specifies what combination of signals cause the In Use LED (on the front
of the drive) to illuminate. Suggest you leave this as it is.

5 DS3 Drive Select
4 DS2 "
3 DS1 "
2 DS0 "

These are the Drive Select jumpers. Only one pair should be jumpered.
All PC floppy drives should be jumpered as DS1, and make sure your
floppy cable has a twist in it between the end connector (drive A:) and
the next connector along (drive B:).

1 TERM Termination

If your drive is on the end of the cable, put a jumper on this set of
pins, otherwise leave it open.
 
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