Chinon FZ-357

Olecranon · 16 February 2006, 07:02

I know this topic has been brought up before (I did search first!), but maybe I need some specific information. I jumpered a drive correctly and installed it in my A2000. If I boot off a floppy, it works fine. If I boot off the hard drive I get a DF0:???? on the screen when there is no disk in the drive.

I pop a disk in, and use the diskchange df0: command and I can read the floppy fine. This leads me to believe that the J2 connection on the board needs to be connected with a bit of solder.

The thing is. I opened the drive and did a continuity test on what I thought was J2 and it was already connected. The only thing I can think of is that I was on the wrong j2 (I think I was looking at the circuit board where the floppy connector was). Can anyone give me a better description of where J2 is? In fact a digital camera pick would be great

Thanks for the assistance!

a_petri · 16 February 2006, 11:20

Dear Olecranon,

did you check this page?

http://www.inf.mit.bme.hu/private/fz357/

It is about modifying certain models for an Amiga HD drive, but it may be of some help to you as well.

Olecranon · 17 February 2006, 02:58

I have looked at that site. Although that information is specific to creating a HD drive (I'm just trying to make a DD drive), there was one diagram that showed J2.

The location of J2 on that diagram (near pins 33/34 of the data connector) do not match the circuit board in my FZ-357.

Here is a pic of my drive and the location of J2. This pad is already connected.

a_petri · 17 February 2006, 10:33

Quote:

Originally Posted by Olecranon

I have looked at that site. Although that information is specific to creating a HD drive (I'm just trying to make a DD drive), there was one diagram that showed J2.

The location of J2 on that diagram (near pins 33/34 of the data connector) do not match the circuit board in my FZ-357.

Here is a pic of my drive and the location of J2. This pad is already connected.

Well, it is quite different from the FZ-357 PCB I am familiar with. Must be that FZ-357 version that *cannot* be converted to a HD drive (I have seen that variant whole but never disassembled it). I'm afraid that I can't help in this case.

If you have a multimeter handy, you can check the disk-presence-sensing microswitch. It is the rear one of the two on the left side. Once the original HD drive in my Amiga 4000 started to act flakily (often did not sense the inserted floppies at the first attempt, even more often it stopped sensing them in the middle of a disk operation :-), and I found out that this microswitch was the cause of the problem.

Charlie · 17 February 2006, 22:27

@Olecranon:

Wellcome to EAB.

Bursitis?

Make sure you have a comfy armchair for protection.

Olecranon · 17 February 2006, 22:48

Quote:

Originally Posted by Charlie

@Olecranon:

Wellcome to EAB.

Bursitis?

Make sure you have a comfy armchair for protection.

Thanks for the welcome.

No bursitis, I'm a radiographer

Charlie · 19 February 2006, 18:20

Ah...I see.

Overdoc · 28 February 2006, 20:42

Unfortunately I don't have no good digital camera, but if I don't forget I will open up a converted FZ-357 and have a look again.
I did this loooong ago so I don't remember exactly where J2 was.

Overdoc · 28 February 2006, 20:45

Also, did you read the mistake I posted in the instructions ?
I made a mistake regarding MM and MD - please have a look!!

16 February 2006, 07:02	#1
Olecranon Registered User Join Date: Feb 2006 Location: Wisconsin - USA Age: 56 Posts: 86	Chinon FZ-357 I know this topic has been brought up before (I did search first!), but maybe I need some specific information. I jumpered a drive correctly and installed it in my A2000. If I boot off a floppy, it works fine. If I boot off the hard drive I get a DF0:???? on the screen when there is no disk in the drive. I pop a disk in, and use the diskchange df0: command and I can read the floppy fine. This leads me to believe that the J2 connection on the board needs to be connected with a bit of solder. The thing is. I opened the drive and did a continuity test on what I thought was J2 and it was already connected. The only thing I can think of is that I was on the wrong j2 (I think I was looking at the circuit board where the floppy connector was). Can anyone give me a better description of where J2 is? In fact a digital camera pick would be great Thanks for the assistance!

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16 February 2006, 11:20	#2
a_petri Registered User Join Date: Jul 2003 Location: Budapest / Hungary Posts: 73	Dear Olecranon, did you check this page? http://www.inf.mit.bme.hu/private/fz357/ It is about modifying certain models for an Amiga HD drive, but it may be of some help to you as well.

17 February 2006, 02:58	#3
Olecranon Registered User Join Date: Feb 2006 Location: Wisconsin - USA Age: 56 Posts: 86	I have looked at that site. Although that information is specific to creating a HD drive (I'm just trying to make a DD drive), there was one diagram that showed J2. The location of J2 on that diagram (near pins 33/34 of the data connector) do not match the circuit board in my FZ-357. Here is a pic of my drive and the location of J2. This pad is already connected.

17 February 2006, 22:27	#5
Charlie . . Mouse . . Join Date: Jun 2005 Location: Nowhere Age: 55 Posts: 1,792	@Olecranon: Wellcome to EAB. Bursitis? Make sure you have a comfy armchair for protection.

19 February 2006, 18:20	#7
Charlie . . Mouse . . Join Date: Jun 2005 Location: Nowhere Age: 55 Posts: 1,792	Ah...I see.

28 February 2006, 20:42	#8
Overdoc Commodore Collector Join Date: Aug 2001 Location: Austria Age: 53 Posts: 944	Unfortunately I don't have no good digital camera, but if I don't forget I will open up a converted FZ-357 and have a look again. I did this loooong ago so I don't remember exactly where J2 was.

28 February 2006, 20:45	#9
Overdoc Commodore Collector Join Date: Aug 2001 Location: Austria Age: 53 Posts: 944	Also, did you read the mistake I posted in the instructions ? I made a mistake regarding MM and MD - please have a look!!

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