Re: Apple IIc

[Stephen Shaw <xstephenx@apple2.org.za>]

Not a problem I have lots of scrap IIc boards. I notice the Classic Mac has the
same number chip on its main board - are these the same?
  
On Tue, 10 Jul 2001 21:19:38 GMT, JM Carmack wrote:

> 'Fraid your IWM is toast bubba.  The headhunting is a dead giveaway for
> that.
>
>
>
> stephen@apple2.org.za (Stephen Shaw) wrote in
> <9h522n$3da$1@venus.itns.co.za>:
>
>>With regard to my previous post to Ralph. Yes I did check the speed
>>while it was connected to the Disk II controller. Everything checks out
>>OK, I used Copy II Plus, the Apple Dealer Diagnostics and the Verbatim
>>check disks. I think the drive is Ok I have a feeling that one of the
>>chips on the motherboard is faulty. The drive does spin up and the head
>>"hunts", but it doesn't read. I hope it isn't the IWM chip. I have some
>>but am reluctant to start uninformed "surgery".
>>
>>On Sun, 10 Jun 2001 21:27:48 +1000, Mark Cummings wrote:
>>
>>> And if after cleaning the heads, I would recommend try to boot a known
>>> good disk, while at the same time adjusting the drive speed pot
>>> underneath the IIc, until the disk boots.  If you look under the IIc
>>> there is a small hole about 1/8" dia, you need a small metal (for
>>> strength) jewellers screwdriver to adjust the speed. It's a little
>>> tricky getting it in the right spot. Then run a speed check/adjusting
>>> program such as the one in Copy II Plus. I have used this method to
>>> boot a dead clone before, where I did not have another compatable disk
>>> drive to try on it. Another method you may try is to plug in an
>>> external 5.25 drive, power up, hit ctrl-Reset and type PR#7 to boot a
>>> disk in the external drive. I think this only applies to early ROMs
>>> AFAIK. For late ROMs ONLY you could use a 3.5" Unidisk drive (NOT
>>> Apple 3.5) if you have one. It will boot automatically after it checks
>>> the internal drive. Then run the drive spped adjustment program off
>>> the 3.5 to set the internal 5.25.
>>>
>>> Mark
>>>
>>>
>>> Ralph Glatt <mairsil@my-deja.com> wrote in message
>>> 3be3af45.0106091651.3d811230@posting.google.com">news:3be3af45.0106091651.3d811230@posting.google.com...
>>>> Stephen Shaw <stephen@apple2.org.za> wrote in message
>>> news:<9ft4l2$n44$1@venus.itns.co.za>...
>>>> > On Sun, 27 May 2001 06:22:37 GMT, ralmin wrote:
>>>> >
>>>> > >> Does anyone know what the problem is when your Apple IIc at
>>>> > >> startup
>>> says
>>>> >  "Check
>>>> > >> drive". I have taken the drive out and put it on a Disk II
>>>> > >> interface
>>> where
>>>> >  it
>>>> > >> boots just fine. As I now have a Pace desoldering station I can
>>>> > >> now
>>>> >  unsolder
>>>> > >> chips without any fears. Anyone with the old SAMS computerfact
>>>> > >> for
>>> the IIc
>>>> > >> would be able to advise me what to check.
>>>> > >> If anyone has the SAMS Computerfacts for the II range please
>>>> > >> contact
>>> me
>>>> >  I'd
>>>> > >> like to buy them if the price is right
>>>> > >
>>>> > > "Check drive" just means there is no bootable disk in the drive.
>>>> > >
>>>> > > I hate to ask it but did you try it with a few disks first?
>>>> >
>>>> > YEP!
>>>>
>>>> Okay, then, have you tried cleaning the heads?
>>

-- 
It takes 42 muscles to frown but only 4 to reach out and slap someone