A2000 Rev 4.4 schematics?

GoodCrossing · 12 September 2021, 23:32

Hi all,

In my adventures in repairing an A2000 rev 4.4, I haven't found any schematics for my revision. Using rev 6 has been fine, but I need to take a look at the board area and it's quite different. I thought these schematics weren't on the net, but then I saw them in this video: [ Show youtube player ] and it seems they're clearly out there somewhere... Does anyone have a link?

EDIT:

I used more creative googling and I found the schematics for 4.0, which is much closer to my board than rev 6. Link is http://www.retro-commodore.eu/downlo..._Main_Unit.pdf but it gave me a 404, so I used the torrent download available in the same page (http://www.retro-commodore.eu/amiga-...=506&width=700). If for some reason that doesn't work either, and you're stuck without schematics like me, send me a PM

jlin_au · 13 September 2021, 04:01

try the Amiga 2000 Service and User Manual available as a PDF from https://www.opweb.de/english/company...re/Amiga_A2000

It has schematics for both the A2000 and B2000 versions as part of its appendixes.

A similar manual is at: https://usermanual.wiki/Document/Com....981032141.pdf

For Revision 4.4 specific hires pictures also see https://bigbookofamigahardware.com/b...uct.aspx?id=17

The amiga hardware database has a summary of the changes introduced by each motherboard revision, see http://amiga.resource.cx/mod/a2000.html

The 1987 manual may be more relevant https://web.archive.org/web/20120613...anual_1987.pdf

GoodCrossing · 14 September 2021, 22:03

I had seen those schematics, unfortunately, none depicted the 32-chip RAM configuration found in the Amiga 2000 Rev 4.x. The manual I linked in my edit does include them, however, and so it's been really useful.

leon22 · 23 January 2023, 18:26

Based on the mentioned source from GoodCrossing I was able to find the pdf.
I have extracted the relevant pages: https://pdfhost.io/v/NqVKWqBpX_Commo...v4_Schematics_

Hope this will help.

TCD · 23 January 2023, 18:36

Thank you for the link

I've added the PDF to Turran's FTP in http://ftp2.grandis.nu/turran/FTP/Co...uals/Hardware/ as 'A2000CR_Rev4_Schematics.pdf' (pdfhost.io seems to be a bit slow)

12 September 2021, 23:32	#1
GoodCrossing Registered User Join Date: Jul 2020 Location: Gijón / Spain Posts: 15	A2000 Rev 4.4 schematics? Hi all, In my adventures in repairing an A2000 rev 4.4, I haven't found any schematics for my revision. Using rev 6 has been fine, but I need to take a look at the board area and it's quite different. I thought these schematics weren't on the net, but then I saw them in this video: [ Show youtube player ] and it seems they're clearly out there somewhere... Does anyone have a link? EDIT: I used more creative googling and I found the schematics for 4.0, which is much closer to my board than rev 6. Link is http://www.retro-commodore.eu/downlo..._Main_Unit.pdf but it gave me a 404, so I used the torrent download available in the same page (http://www.retro-commodore.eu/amiga-...=506&width=700). If for some reason that doesn't work either, and you're stuck without schematics like me, send me a PM Last edited by GoodCrossing; 13 September 2021 at 01:09. Reason: Found it!

13 September 2021, 04:01	#2
jlin_au Registered User Join Date: Nov 2016 Location: Fadden ACT Australia Posts: 128	try the Amiga 2000 Service and User Manual available as a PDF from https://www.opweb.de/english/company...re/Amiga_A2000 It has schematics for both the A2000 and B2000 versions as part of its appendixes. A similar manual is at: https://usermanual.wiki/Document/Com....981032141.pdf For Revision 4.4 specific hires pictures also see https://bigbookofamigahardware.com/b...uct.aspx?id=17 The amiga hardware database has a summary of the changes introduced by each motherboard revision, see http://amiga.resource.cx/mod/a2000.html The 1987 manual may be more relevant https://web.archive.org/web/20120613...anual_1987.pdf Last edited by jlin_au; 13 September 2021 at 04:46. Reason: add further detail

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14 September 2021, 22:03	#3
GoodCrossing Registered User Join Date: Jul 2020 Location: Gijón / Spain Posts: 15	I had seen those schematics, unfortunately, none depicted the 32-chip RAM configuration found in the Amiga 2000 Rev 4.x. The manual I linked in my edit does include them, however, and so it's been really useful.

23 January 2023, 18:26	#4
leon22 Registered User Join Date: Sep 2019 Location: Graz Posts: 5	Based on the mentioned source from GoodCrossing I was able to find the pdf. I have extracted the relevant pages: https://pdfhost.io/v/NqVKWqBpX_Commo...v4_Schematics_ Hope this will help.

23 January 2023, 18:36	#5
TCD HOL/FTP busy bee Join Date: Sep 2006 Location: Germany Age: 46 Posts: 31,522	Thank you for the link I've added the PDF to Turran's FTP in http://ftp2.grandis.nu/turran/FTP/Co...uals/Hardware/ as 'A2000CR_Rev4_Schematics.pdf' (pdfhost.io seems to be a bit slow)

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