Mitsumi D359M3D mod help please - Page 2

lesta_smsc · 16 March 2015, 00:44

Bump...

Zippy Zapp · 16 March 2015, 04:01

Your board is different for sure. I wonder why those instructions say to solder bridge Den2 while my revision has a jumper wire from Pin 2 to wire on pin 34? What does Den2 do, I wonder? Looks like it goes to the same pin on both boards, of the IC. That would sure be easier then the pain getting the jumper wire to stick to the trace.

I manage to finish mine and it did indeed work but it was a pain. I ended up lifting the trace on pin 34, lol but it stayed connected to the rest of the trace I managed to solder the wire to it and I will get some hot glue to make sure it doesnt move. uggh.

I powered up and it started the old click click. Put in Xcopy and it booted to the Workbench. have not tried a trackloader or formatting yet but it seems to read all the disks i put in it.

lesta_smsc · 16 March 2015, 14:28

Quote:

Originally Posted by Zippy Zapp

Your board is different for sure. I wonder why those instructions say to solder bridge Den2 while my revision has a jumper wire from Pin 2 to wire on pin 34? What does Den2 do, I wonder? Looks like it goes to the same pin on both boards, of the IC. That would sure be easier then the pain getting the jumper wire to stick to the trace.

I manage to finish mine and it did indeed work but it was a pain. I ended up lifting the trace on pin 34, lol but it stayed connected to the rest of the trace I managed to solder the wire to it and I will get some hot glue to make sure it doesnt move. uggh.

I powered up and it started the old click click. Put in Xcopy and it booted to the Workbench. have not tried a trackloader or formatting yet but it seems to read all the disks i put in it.

My does the clicking... It just won't recognise the disks once inserted! Tried cleaning the head in case that was the issue... no idea why mine won't work yet unfortunately lol

Zippy Zapp · 16 March 2015, 15:10

Quote:

Originally Posted by lesta_smsc

My does the clicking... It just won't recognise the disks once inserted! Tried cleaning the head in case that was the issue... no idea why mine won't work yet unfortunately lol

Sorry if this is a dumb question but was it working fine as a PC drive and how long ago?

I have an epson external that I picked up with an A500 and it would click but not read disks. I took it apart and cleaned it with no joy. I was going to put this converted drive in the case it came in but the stupid power connector is part of the PCB and obviously made only to fit that models unusual power plug location. Anyway I tried moving the heads on the rail manually and putting some lubricant on it and I plugged it in and it started reading disks again! lol. hasn't worked in years.

Could it be the drive itself?

lesta_smsc · 16 March 2015, 15:13

Quote:

Originally Posted by Zippy Zapp

Sorry if this is a dumb question but was it working fine as a PC drive and how long ago?

I have an epson external that I picked up with an A500 and it would click but not read disks. I took it apart and cleaned it with no joy. I was going to put this converted drive in the case it came in but the stupid power connector is part of the PCB and obviously made only to fit that models unusual power plug location. Anyway I tried moving the heads on the rail manually and putting some lubricant on it and I plugged it in and it started reading disks again! lol. hasn't worked in years.

Could it be the drive itself?

Good question. It worked when I last removed it from the PC. It was virtually brand new... I'll try lubricant and see... how did you move as it is stuck to the motor!

Zippy Zapp · 16 March 2015, 16:12

Quote:

Originally Posted by lesta_smsc

Good question. It worked when I last removed it from the PC. It was virtually brand new... I'll try lubricant and see... how did you move as it is stuck to the motor!

I Just physically slid the head on the rail. Maybe on some drives you cannot do that but this one moved easily. For lubricant I used vaseline, as mentioned in another thread.

lesta_smsc · 16 March 2015, 16:34

Quote:

Originally Posted by Zippy Zapp

For lubricant I used vaseline, as mentioned in another thread.

Are we still talking about the floppy lol... sorry couldn't resist!

Zippy Zapp · 16 March 2015, 16:36

Lol.

Jope · 17 March 2015, 07:10

Quote:

Originally Posted by lesta_smsc

My does the clicking... It just won't recognise the disks once inserted! Tried cleaning the head in case that was the issue... no idea why mine won't work yet unfortunately lol

The head's capability to read has nothing to do with disk detection. There's a switch near the write protect switch that does this. There is also a pin reserved for it on the data connector.

It could be the switch itself, it could be the drive, it could be your cable and it could also be the CIA chip that handles disk changes.

lesta_smsc · 17 March 2015, 08:49

Quote:

Originally Posted by Jope

The head's capability to read has nothing to do with disk detection. There's a switch near the write protect switch that does this. There is also a pin reserved for it on the data connector.

It could be the switch itself, it could be the drive, it could be your cable and it could also be the CIA chip that handles disk changes.

The original A500 floppy disk drive appears to work okay with the same cables...

I suspect it is the wiring... but the Pin 2 is what is bothering me as it is not connected to anything and pin 12 of IC does not have a cut trace which is what the guide mentioned but not shown on the picture of the MSX mod.

Zippy Zapp · 19 March 2015, 00:42

When you put the solder jumper on Den2 then arent you re-routing the pin to a different pin on the IC? That would seem to take the place of putting a jumper from pin 2 to wherever it needs to go on other drives.

lesta_smsc · 19 March 2015, 02:26

I'm not sure ... wondering whether to try the other mod as it is for the same model but different motherboard.

Zippy Zapp · 19 March 2015, 02:36

That mod was for a different PCB though so I don't think it would work as components are not in the same place and not even in the same orientation. I suppose if you new which pin on the IC needed to go to pin 34 then that might work.

I just pulled another drive out of a recycle PC and found another Mitsumi D359M3D drive. This one looks different from the one I modded and I can't easily get to the PCB without disassembling the whole stupid drive. The front bezel was connected to the top cover. Weird my other drive was a simple two screws and the cover slid off to reveal the PCB. Same model, many variations. That seems to be the norm with floppy drives.

lesta_smsc · 19 March 2015, 22:20

Quote:

Originally Posted by Zippy Zapp

That mod was for a different PCB though so I don't think it would work as components are not in the same place and not even in the same orientation. I suppose if you new which pin on the IC needed to go to pin 34 then that might work.

I just pulled another drive out of a recycle PC and found another Mitsumi D359M3D drive. This one looks different from the one I modded and I can't easily get to the PCB without disassembling the whole stupid drive. The front bezel was connected to the top cover. Weird my other drive was a simple two screws and the cover slid off to reveal the PCB. Same model, many variations. That seems to be the norm with floppy drives.

This is like the one I have most certainly! You have to take it apart completely just to get to motherboard. Can you do me a favour and take a picture of where the eject spring goes?!

Zippy Zapp · 23 March 2015, 17:33

Hi Sorry for late reply, have been battling the blasted flu. Did you figure this out or do i need to take a picture?

lesta_smsc · 24 March 2015, 01:36

Quote:

Originally Posted by Zippy Zapp

Hi Sorry for late reply, have been battling the blasted flu. Did you figure this out or do i need to take a picture?

Please take picture.

Still cannot get drive to read!

lesta_smsc · 02 April 2015, 14:35

Quote:

Originally Posted by Zippy Zapp

Hi Sorry for late reply, have been battling the blasted flu. Did you figure this out or do i need to take a picture?

Bump...

lesta_smsc · 19 April 2015, 12:30

Quote:

Originally Posted by Zippy Zapp

Hi Sorry for late reply, have been battling the blasted flu. Did you figure this out or do i need to take a picture?

You still there? Lol

Zippy Zapp · 19 April 2015, 19:15

Oh, Man. Sorry! After being sick for what seems like forever, I lost track of this thread. I'll slide the face off today and post a pic of the inside.

Zippy Zapp · 19 April 2015, 22:24

Here is what I could get pics of. I had one screw that I couldn't remove. It was covered in Loctite or thread lock. Weird head too, i didnt have a match. This drive is funky and it looks like if it is not put back together just right it might throw the alignment off. Weird drive.

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16 March 2015, 00:44	#21
lesta_smsc Registered User Join Date: Feb 2012 Location: United Kingdom Posts: 3,184	Bump...

16 March 2015, 04:01	#22
Zippy Zapp Registered User Join Date: Sep 2013 Location: CA/USA Posts: 346	Your board is different for sure. I wonder why those instructions say to solder bridge Den2 while my revision has a jumper wire from Pin 2 to wire on pin 34? What does Den2 do, I wonder? Looks like it goes to the same pin on both boards, of the IC. That would sure be easier then the pain getting the jumper wire to stick to the trace. I manage to finish mine and it did indeed work but it was a pain. I ended up lifting the trace on pin 34, lol but it stayed connected to the rest of the trace I managed to solder the wire to it and I will get some hot glue to make sure it doesnt move. uggh. I powered up and it started the old click click. Put in Xcopy and it booted to the Workbench. have not tried a trackloader or formatting yet but it seems to read all the disks i put in it.

16 March 2015, 16:36	#28
Zippy Zapp Registered User Join Date: Sep 2013 Location: CA/USA Posts: 346	Lol.

19 March 2015, 00:42	#31
Zippy Zapp Registered User Join Date: Sep 2013 Location: CA/USA Posts: 346	When you put the solder jumper on Den2 then arent you re-routing the pin to a different pin on the IC? That would seem to take the place of putting a jumper from pin 2 to wherever it needs to go on other drives.

19 March 2015, 02:26	#32
lesta_smsc Registered User Join Date: Feb 2012 Location: United Kingdom Posts: 3,184	I'm not sure ... wondering whether to try the other mod as it is for the same model but different motherboard.

19 March 2015, 02:36	#33
Zippy Zapp Registered User Join Date: Sep 2013 Location: CA/USA Posts: 346	That mod was for a different PCB though so I don't think it would work as components are not in the same place and not even in the same orientation. I suppose if you new which pin on the IC needed to go to pin 34 then that might work. I just pulled another drive out of a recycle PC and found another Mitsumi D359M3D drive. This one looks different from the one I modded and I can't easily get to the PCB without disassembling the whole stupid drive. The front bezel was connected to the top cover. Weird my other drive was a simple two screws and the cover slid off to reveal the PCB. Same model, many variations. That seems to be the norm with floppy drives.

23 March 2015, 17:33	#35
Zippy Zapp Registered User Join Date: Sep 2013 Location: CA/USA Posts: 346	Hi Sorry for late reply, have been battling the blasted flu. Did you figure this out or do i need to take a picture?

19 April 2015, 19:15	#39
Zippy Zapp Registered User Join Date: Sep 2013 Location: CA/USA Posts: 346	Oh, Man. Sorry! After being sick for what seems like forever, I lost track of this thread. I'll slide the face off today and post a pic of the inside.

19 April 2015, 22:24	#40
Zippy Zapp Registered User Join Date: Sep 2013 Location: CA/USA Posts: 346	Here is what I could get pics of. I had one screw that I couldn't remove. It was covered in Loctite or thread lock. Weird head too, i didnt have a match. This drive is funky and it looks like if it is not put back together just right it might throw the alignment off. Weird drive.

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