Macintosh Classic: Difference between M0420 and M1420

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Hello
What is the difference between the models M0420 and M1420 of Macintosh
Classic?
Mactracker does not show a difference between these two models.
Thank you, crockodile

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grannysmith's picture
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Re: Macintosh Classic: Difference between M0420 and M1420

For (Mac) oldies, the most useful (to my present knowledge) page for translation of Mnnnn model-numbers is this one:

http://myoldmac.net/FAQ/mac-AppleModelPartNumbers.htm

although it will bring you no joy in connection with M0420. Both of my Classics (Cork CK and Singapore SG) resolutely declare themselves to be M1420.

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Re: Macintosh Classic: Difference between M0420 and M1420

Made in Singapore

Assembled in Ireland

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Re: Macintosh Classic: Difference between M0420 and M1420

Fine pics, but you need not have thought that I doubted the OP's post. There is even less likelihood of that now that I have exhumed and examined mine. In entering my Classics into my database I appear to heve assumed that the model number of both was the same (how silly of me…), and therefore entered M1420 (made in Singapore, SG2…) in both cases. However, although one of mine is styled M0420 (assembled in Ireland, CK1…), mine are thus the complete converse of yours in their model numbers.

It could be speculated that the dispersion of plants for manufacture/assembly is reflected in the languages (at a guess, Finnish, Danish and German) used on my Classics for the ritual warning about HT associated with the CRT. Compare that with the Spanish and English on your Classics. Perhaps the variety, if not confusion, was all a result of production near the intended markets. There are other differences arising. Both of mine have paper labels, respectively part-numbered 825-2665-A (SG) and 825-2639-A (CK). The SG has a blanking-plate over a hole in the bucket, immediately to the left of the ADB port (looking from behind). The FCC IDs are the same: BCGM0420 in both cases.

The European practice of using a comma rather than the Arabic point (or stop) in decimal fractions apparently puzzled the factory in SG, since their label quoted the HT inside as 12, 6 kV rather than 12,6kV.

None of the foregoing has answered the OP's question, very probably, but you have at least an idea of some of the hurdles in forensic Macology.

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Re: Macintosh Classic: Difference between M0420 and M1420

I think the newer is the one with the hole for the sound in, fo the upgrade to Classic II, basically C and CII shared the same plastic and the C had a cap in the hole. Older Classics had no hole.

Ben

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Re: Macintosh Classic: Difference between M0420 and M1420

bengi wrote:

C and CII shared the same plastic and the C had a cap in the hole. Older Classics had no hole.

It may be a case of rediscovering the wheel, but it seems as if you have fingered the answer to the OP's question. A Classic, wherever made or assembled but with no provision in the bucket for audio-in, is a M0420. That is quite in keeping with the 'older' impilcation in having a model-number with a leading zero. If the bucket can accommodate an MLB with audio-in—some infinitesimal distance towards the 'modernity' of a Mac with a full 68030—that advance was celebrated as M1420. The 'full' Classic II, native-born as opposed to an upgraded Classic, was then an M4150 as both of my Classic IIs are: Jan and Aug 1992.

My 1992 Classic (SG2… in the serial-number) and 1991 Classic (CK1…) are quite congruent with the notion of a first release followed later by an upgrade. lefevere didn't quote serial-numbers, but it would be of interest to know whether there were upgrades already in the wind in 1991.

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Re: Macintosh Classic: Difference between M0420 and M1420

classic with audio in

M0420

CK2060DBD11

Manufactured in: CK => Cork, Ireland
Year of production: 1992
Week of production: 6
Production number: 0DB => 487
Modell ID: D11 => Macintosh Classic

Your Macintosh Classic was the 487th Mac manufactured during the 6th week of 1992 in Cork, Ireland.

serial decoder

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Re: Macintosh Classic: Difference between M0420 and M1420

Thank you very much for your answers.
I decoded the serial numbers with myoldmac.net.
Here the 3 Mac Classics, that I know:
M1420: no audio in. Made in Ireland, week 45 1991
M1420: no audio in. Made in Singapore, week 26 1991
M0420: no audio in. Made in Singapore, week 2 1991

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Re: Macintosh Classic: Difference between M0420 and M1420

Indeed:

these are mine: both M0420, so the dilemma is still on!

Could it be the voltage, are all these Ireland and Singapore 220 Volts or also 120?

By the way, these are my two Classics:

1) Now upgraded to Classic II, still missing the hole (dremel, probably or an eBay case)

Manufactured in: CK => Cork, Ireland
Year of production: 1991
Week of production: 13
Production number: 1K5 => 1807
Modell ID: D11 => Macintosh Classic
Your Macintosh Classic was the 1807th Mac manufactured during the 13th week of 1991 in Cork, Ireland.

2) Upgraded to 68030 40 MHz http://www.webalice.it/beniamino.cenci.goga/68k

Manufactured in: CK => Cork, Ireland
Year of production: 1991
Week of production: 50
Production number: 4Q8 => 5448
Modell ID: D11 => Macintosh Classic
Your Macintosh Classic was the 5448th Mac manufactured during the 50th week of 1991 in Cork, Ireland.

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