Mitsumi D359M3D mod help please

lesta_smsc · 11 March 2015, 22:07

Hello all...

Can anyone post better images and instructions for modding this drive for use on Amiga? I've seen a german version with a poor quality picture but cannot make sense of the tracks to cut or re-solder etc. Looks like a simple enough mod and I want to give this a go. My A500 drive is getting a little poor with reading despite and already cleaned heads...

Thank you in advance

Lesta_SMSC

cpiac64 · 11 March 2015, 22:19

http://www.pitsch.de/stuff/amiga/tep...umid359m3d.jpg

lesta_smsc · 11 March 2015, 22:27

Can you translate instructions? Excuse my ignorance but I can't tell what is actually happening in the diagram.

cpiac64 · 11 March 2015, 23:32

cut wire to pin 12 and connect to pin 10

cut wire 34 and connect to pin 2

connect pin 34 to pin 17 of ic

lesta_smsc · 12 March 2015, 00:47

Thank you

... finally got the damn thing open. You literally have to disassemble the entire floppy drive! Hope I can get this working

Just some pics of it open. Hopefully be able to provide higher resolution pics once I've done this mod!

Can't seem to add via phone

Hmmm found this for converting drives for compatibility with MSX. Same drive though different soldering and in the comments it says it will be compatible with Amiga?
https://www.msxinfo.net/2014/03/03/m...sx-compatible/

Only issue is... I can't find the "brown wire" it speaks of!

Zippy Zapp · 12 March 2015, 07:35

i've got the same drive laying around, well a couple of them. let us know how it turns out. i have started the process and cut both traces. now i just need to find some really small jumper wire as the hookup wire I have is way too big. hopefully my iron tip is small enough.
Thanks for the translation, it was helpful. I assume this is for DF0:?

kipper2k · 12 March 2015, 23:29

he says ...

"On my drive I used a quick & dirty fix, to put a solderjumper on pin 10-12"

so no brown wire needed

lesta_smsc · 12 March 2015, 23:32

Yes but ... both mods appear different! One goes directly to chip and the other does not?...

Also:
1) pin 2 is not connected to anything in the MSX mod?
2) DEN2 not bridged in 1st mod.

Want to try and succeed first time as this was a pain to open! Lol

kipper2k · 13 March 2015, 00:17

Quote:

Originally Posted by lesta_smsc

Yes but ... both mods appear different! One goes directly to chip and the other does not?...

Also:
1) pin 2 is not connected to anything in the MSX mod?
2) DEN2 not bridged in 1st mod.

Want to try and succeed first time as this was a pain to open! Lol

i think the best solution is to hook up wires, not connect them, and leave them dangling so when you reassemble you can try the various options, i know those mitsumis are nasty pieces of work

lesta_smsc · 13 March 2015, 00:19

Quote:

Originally Posted by kipper2k

i think the best solution is to hook up wires, not connect them, and leave them dangling so when you reassemble you can try the various options, i know those mitsumis are nasty pieces of work

If I follow guide 2 which is exactly the same board as mine. I'll be ok? Pin 2 is not connected to anything on this one unlike the 1st mod?

Zippy Zapp · 13 March 2015, 00:20

Quote:

Originally Posted by lesta_smsc

Yes but ... both mods appear different! One goes directly to chip and the other does not?...

Also:
1) pin 2 is not connected to anything in the MSX mod?
2) DEN2 not bridged in 1st mod.

Want to try and succeed first time as this was a pain to open! Lol

Look at the two pictures of the drives boards. The MSX mod is a different board. Even though they are the same drive they are really different boards and different layouts. I would go with whatever looks like your board. For me it was the one posted in this thread in german(?).

lesta_smsc · 13 March 2015, 00:21

Quote:

Originally Posted by Zippy Zapp

Look at the two pictures of the drives boards. The MSX mod is a different board. Even though they are the same drive they are really different boards and different layouts. I would go with whatever looks like your board. For me it was the one posted in this thread in german(?).

Yes. I think so... except I want to be sure I can use this on xcopy for example. I prefer this for formatting disks

Zippy Zapp · 13 March 2015, 00:26

Quote:

Originally Posted by lesta_smsc

Yes. I think so... except I want to be sure I can use this on xcopy for example. I prefer this for formatting disks

I have three of these drives laying around so I wasn't too concerned about borking it. They all came out of crappy Dell Pentium 4 towers which were junk that I recycle for customers. Can't hardly give this stuff away.

But, yeah if I could mod it successfully and it will work with Sanity Arte demo, then it should be good to go for most anything else, from what I understand about that demo needing Ready signal.

What gauge jumper wires are you using?

lesta_smsc · 13 March 2015, 00:27

Quote:

Originally Posted by Zippy Zapp

I have three of these drives laying around so I wasn't too concerned about borking it. They all came out of crappy Dell Pentium 4 towers which were junk that I recycle for customers. Can't hardly give this stuff away.

But, yeah if I could mod it successfully and it will work with Sanity Arte demo, then it should be good to go for most anything else, from what I understand about that demo needing Ready signal.

What gauge jumper wires are you using?

I'm going to use Kynar wire which I used for xbox 360 mod.

Zippy Zapp · 13 March 2015, 00:30

Quote:

Originally Posted by lesta_smsc

I'm going to use Kynar wire which I used for xbox 360 mod.

Ill check that out, not heard of it.

lesta_smsc · 13 March 2015, 00:34

Quote:

Originally Posted by Zippy Zapp

Ill check that out, not heard of it.

It's AWG30 I believe this is good. The great thing about it is the flexibility of the cable!

hope it's enough for the current this drive requires!

Zippy Zapp · 13 March 2015, 00:36

Quote:

Originally Posted by lesta_smsc

It's AWG30 I believe this is good. The great thing about it is the flexibility of the cable!

hope it's enough for the current this drive requires!

Ok Cool. Yeah I hope so, as the normal hookup wires are too heavy to solder to the smd chip leg...

lesta_smsc · 14 March 2015, 00:22

Ok... wired up like the MSX. It will boot, spins the disk and then stop. Just as though no valid disk in drive... any ideas?

Zippy Zapp · 14 March 2015, 02:56

Does your drives board look like the one in the MSX tutorial linked above or does it look like the one in the image that cpiac64 posted?

I am going to attempt to solder my jumpers this weekend. I didn't have small enough wire and dang radio shack had nil.

lesta_smsc · 14 March 2015, 08:42

My drive looks exactly the same as MSX post I put a link to. I think there's a simple error. might need to cut trace on pin 12 but cannot see this on the MSX picture as being done and instead he just solder-jumpered pins 10&12 together? Also pin 2 is not connected to anything other than DEN2 which is also solder-jumpered.
Here's a picture. BTW the yellow wire is the Kynar wire.

11 March 2015, 22:07	#1
lesta_smsc Registered User Join Date: Feb 2012 Location: United Kingdom Posts: 3,173	Mitsumi D359M3D mod help please Hello all... Can anyone post better images and instructions for modding this drive for use on Amiga? I've seen a german version with a poor quality picture but cannot make sense of the tracks to cut or re-solder etc. Looks like a simple enough mod and I want to give this a go. My A500 drive is getting a little poor with reading despite and already cleaned heads... Thank you in advance Lesta_SMSC Last edited by lesta_smsc; 11 March 2015 at 22:12.

12 March 2015, 00:47	#5
lesta_smsc Registered User Join Date: Feb 2012 Location: United Kingdom Posts: 3,173	Thank you ... finally got the damn thing open. You literally have to disassemble the entire floppy drive! Hope I can get this working Just some pics of it open. Hopefully be able to provide higher resolution pics once I've done this mod! Can't seem to add via phone Hmmm found this for converting drives for compatibility with MSX. Same drive though different soldering and in the comments it says it will be compatible with Amiga? https://www.msxinfo.net/2014/03/03/m...sx-compatible/ Only issue is... I can't find the "brown wire" it speaks of! Last edited by lesta_smsc; 12 March 2015 at 01:57.

12 March 2015, 23:32	#8
lesta_smsc Registered User Join Date: Feb 2012 Location: United Kingdom Posts: 3,173	Yes but ... both mods appear different! One goes directly to chip and the other does not?... Also: 1) pin 2 is not connected to anything in the MSX mod? 2) DEN2 not bridged in 1st mod. Want to try and succeed first time as this was a pain to open! Lol Last edited by lesta_smsc; 13 March 2015 at 00:03.

14 March 2015, 08:42	#20
lesta_smsc Registered User Join Date: Feb 2012 Location: United Kingdom Posts: 3,173	My drive looks exactly the same as MSX post I put a link to. I think there's a simple error. might need to cut trace on pin 12 but cannot see this on the MSX picture as being done and instead he just solder-jumpered pins 10&12 together? Also pin 2 is not connected to anything other than DEN2 which is also solder-jumpered. Here's a picture. BTW the yellow wire is the Kynar wire. Last edited by lesta_smsc; 14 March 2015 at 11:40.

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11 March 2015, 22:19	#2
cpiac64 Registered User Join Date: Apr 2010 Location: Italy Posts: 1,136	http://www.pitsch.de/stuff/amiga/tep...umid359m3d.jpg

11 March 2015, 22:27	#3
lesta_smsc Registered User Join Date: Feb 2012 Location: United Kingdom Posts: 3,173	Can you translate instructions? Excuse my ignorance but I can't tell what is actually happening in the diagram.

11 March 2015, 23:32	#4
cpiac64 Registered User Join Date: Apr 2010 Location: Italy Posts: 1,136	cut wire to pin 12 and connect to pin 10 cut wire 34 and connect to pin 2 connect pin 34 to pin 17 of ic

12 March 2015, 07:35	#6
Zippy Zapp Registered User Join Date: Sep 2013 Location: CA/USA Posts: 346	i've got the same drive laying around, well a couple of them. let us know how it turns out. i have started the process and cut both traces. now i just need to find some really small jumper wire as the hookup wire I have is way too big. hopefully my iron tip is small enough. Thanks for the translation, it was helpful. I assume this is for DF0:?

12 March 2015, 23:29	#7
kipper2k Registered User Join Date: Sep 2006 Location: Thunder Bay, Canada Posts: 4,323	he says ... "On my drive I used a quick & dirty fix, to put a solderjumper on pin 10-12" so no brown wire needed

14 March 2015, 00:22	#18
lesta_smsc Registered User Join Date: Feb 2012 Location: United Kingdom Posts: 3,173	Ok... wired up like the MSX. It will boot, spins the disk and then stop. Just as though no valid disk in drive... any ideas?

14 March 2015, 02:56	#19
Zippy Zapp Registered User Join Date: Sep 2013 Location: CA/USA Posts: 346	Does your drives board look like the one in the MSX tutorial linked above or does it look like the one in the image that cpiac64 posted? I am going to attempt to solder my jumpers this weekend. I didn't have small enough wire and dang radio shack had nil.

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