• Hello MLAers! We've re-enabled auto-approval for accounts. If you are still waiting on account approval, please check this thread for more information.

Yamaha CD drives

CelGen

68000
The internal drive in my 9600 finally gave up on me so I'm replacing it with CRW14416S 16x CD-RW drive. I have a pile of Yamahas and I'll use those over anything because the rest of my pile is caddy loading or super sloe. The problem I'm getting is that if you leave a CD in the drive while booting the system crashes with bus errors. If you try to boot from the 9.0 disc it starts to read and then hangs everything. It will boot my system 8 cd but stops reading eventually and hangs everything. I've tried different power cables. I've tried different SCSI cables. I've tried both internal bus headers. The drive refuses to behave, with and without other devices on the bus running flawlessly.

Now, if I take the drive, throw it in an enclosure and hang it off the machine on the external port it runs flawlessly. :?:

I tried my other 16x Yamaha. Same problem. Now lets turn the weird up to 11.

I take my 6x speed Yamaha CD-RW drive and it works! What on earth is this voodoo?

Edited: Dammit!!

Actually it seems the 6x drive just goes a little further into the boot before locking the system up. For kicks I pulled a Toshiba from another system and it got to the same point before sounding like it was retrying over and over, finally bombing with error 102. On restart it was yet another bus error.

I can understand the problems if everything on the bus was doing this but why just CD drives and why the hell is it when they are on the internal bus exclusively??

 
I don't understand....

Pulled a bunch of ram, left it alone and it booted. Moved the mouse, bam, SCSI lost its mind again.

Okay, it's not the drives, it's the mac itself. I'll make a new thread in the proper subforum.

 
I found my CPU in mine was faulty as I had a spare card. Did a recap and the original card was back to operation. I'm just saying its possible.

 
The Sonnet Crescendo G4 400/1M doesn't use lytics of any variety. It's pure tantalum and solid state.

Regardless, I can swap in my old CPU module and the problem persists. I can strip the machine completely bare and it still persists.

 
There's surface mount caps all over the logic board (photo). Have we really reached that point for the 9600's?
Yes, we have. I've even had some issues that seem to be cap related on my original G4 DA board. The backup board that's in the computer right now seems fine.

-J

 
Back
Top