[sebhc] H89 docs

[UEOGUY-H.E.ROBT]

I'm gonna go out on a limb here and guess it has something to do with 
the auto feeder, they don't take kindly to folded paper?
Just Bob!

Dwight K. Elvey wrote:

>Hi
> Why does one need to cut the schematic. Why not just
>fold it?
>Dwight
>
>
>  
>
>>From: "Barry Watzman" <Watzman at neo.rr.com>
>>
>>Lee, it is the FCC class B that is the stricter standard.  And my
>>recollection is that there are only two versions, that the Heath and Zenith
>>"A" products are identical, and both meet class B.  The FCC made a ruling
>>that all PCs had to meet class B, the tighter standard, regardless of the
>>intended use or market.
>>
>>I would not suggest cutting the schematics apart.  The solution is a large
>>format scanner.  Kinko's has these, but they charge $25 just to scan one
>>page.  Richard Pestinger had University Library access to one of these and
>>scanned the Z-100 schematics, perhaps he can do the same for the Z89
>>schematics if he still has such access.
>>
>>Barry Watzman
>>
>>
>>-----Original Message-----
>>From: sebhc-bounces at sebhc.org [mailto:sebhc-bounces at sebhc.org] On Behalf Of
>>Lee Hart
>>Sent: Friday, May 20, 2005 1:46 AM
>>To: sebhc at sebhc.org
>>Subject: Re: [sebhc] H89 docs
>>
>>steve shumaker wrote:
>>    
>>
>>>What constitutes "late model" H89? (I recently acquired what I
>>>think is a complete set of H89 docs). Model is 89A and the docs
>>>are dated 1981.
>>>      
>>>
>>There are basically 3 versions: The original H89 (kit or assembled), the
>>H89A (kit version), and the Z90A (assembled unit). Within each version,
>>there were many variations, depending on what options were installed
>>(which disk controllers, memory size, I/O boards, etc.).
>>
>>The original H89 (and H19 terminal) are recognizable by having 10-pin
>>power connectors at the top left corner of the CPU and TLB boards (the
>>large 11" x 10" boards at the back of the case containing most of the
>>logic).
>>
>>The H89A (and H19A terminal) are functionally identical, but have added
>>shielding and filtering to pass FCC class A and B EMI standards. They
>>can be recognized by having 11-pin power connectors (10 pins with one
>>pin cut off) at the top left corner of the CPU and TLB boards.
>>
>>The Heathkit H89A and H19A versions have more shielding than the Zenith
>>Z19A and Z90A versions, to pass the stricter FCC class A standards. The
>>most obvious differences are large sheet metal plates bolted to the
>>backs of the TLB and CPU boards in the Heath versions.
>>
>>If anyone need them, I have schematic and manuals for all of these. I
>>would hesitate to have them cut apart for scanning, though they could
>>probably be copied intact, as they lay flat when opened.
>>--
>>If you would not be forgotten
>>When your body's dead and rotten
>>Then write of great deeds worth the reading
>>Or do the great deeds worth repeating
>>	-- Ben Franklin, Poor Richard's Almanac
>>--
>>Lee A. Hart, 814 8th Ave N, Sartell MN 56377, leeahart_at_earthlink.net
>>
>>
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>>    
>>
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