Xerox Alto

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Title: Xerox Alto
Post by: sdinet on June 13, 2010, 11:16:50 PM
My newly acquired Xerox Alto is shipping to me tomorrow, Can't wait to get it!!!  Will upload pics and video as soon as I get it, and maybe even be lucky enough to get it to fire up!
Title: Xerox Alto
Post by: kb7sqi on June 14, 2010, 09:51:10 AM
Wow, I can't wait to see pics.  :D   [/list]
Title: Xerox Alto
Post by: helf on June 15, 2010, 12:05:24 PM
How the *hell* did you find an alto? I've been wanting to get my hands on one of those for years. Please post lots of pics :D
Title: Xerox Alto
Post by: pentium on June 15, 2010, 02:15:28 PM
An ALTO?!

Holy crap. It's the machine of legends!
Title: Xerox Alto
Post by: sdinet on June 15, 2010, 05:02:09 PM
yeah I do feel VERY LUCKY to have found it, but trust me I paid dearly for it (plus $450 for freight, YIKES).

My goal is to get it working, I am hopeful but terrified at the same time, because if I encounter issues there is no documentation, peer assistance, forums or parts to help me repair it.

I plan on video taping the entire process, starting with the unveiling, will keep you all posted!
Title: Xerox Alto
Post by: itomato on June 15, 2010, 05:20:18 PM
There is some truly great Alto documentation at bitsavers.org (http://www.bitsavers.org/pdf/xerox/alto/).

* schematics (http://www.bitsavers.org/pdf/xerox/alto/AltoSchems/)

* disc system (http://www.bitsavers.org/pdf/xerox/alto/AltoDisc.pdf)

* hardware reference pt. 1 (http://www.bitsavers.org/pdf/xerox/alto/AltoHWRef.part1.pdf)

* hardware reference pt. 2 (http://www.bitsavers.org/pdf/xerox/alto/AltoHWRef.part2.pdf)

* software reference pt. 1 (http://www.bitsavers.org/pdf/xerox/alto/AltoSWRef.part1.pdf)

* software reference pt. 2 (http://www.bitsavers.org/pdf/xerox/alto/AltoSWRef.part2.pdf)
Title: Xerox Alto
Post by: NeXTsociety on June 15, 2010, 05:52:09 PM
Quote from: "sdinet"yeah I do feel VERY LUCKY to have found it, but trust me I paid dearly for it (plus $450 for freight, YIKES).

My goal is to get it working, I am hopeful but terrified at the same time, because if I encounter issues there is no documentation, peer assistance, forums or parts to help me repair it.

I plan on video taping the entire process, starting with the unveiling, will keep you all posted!

Know I know why you have been selling some Cubes.   :lol:

tj
Title: Xerox Alto
Post by: brams on June 16, 2010, 02:59:53 AM
How very cool, well done, surly a milestone and has got to be the centerpiece of the collection.
Title: Xerox Alto
Post by: pentium on June 16, 2010, 11:11:32 AM
I'm sure if you need any additional assistance, Bruce Damer of the digibarn has at least one Alto II in his collection as well as some software. It's possible he might also have some knowledge on the Alto as well.
Title: Xerox Alto
Post by: sdinet on July 02, 2010, 07:51:21 PM
alto arrived today!!!  I need some advice, any best practices on how to safely reform the power supply using a variac?  Some say slowly turn from 10% to 100% power in 10 seconds, others say increment 5% ever 30mins, others say 5% increments every 2 hours and allow 30mins for the power supply to cool off in between each increment....
Title: Xerox Alto
Post by: sdinet on July 03, 2010, 01:36:50 PM
ok, I got it fired up and reformed, the voltages appear to be stable!  But now I am completely stuck, just a warm humming sound and blank screen.  I think I need some professional assistance =(
Title: Xerox Alto
Post by: pentium on July 04, 2010, 12:29:32 PM
Blank as in what? No picture at all or picture with a cursor?

If I'm not mistaken, you need the OS disk pack to boot off of.
Title: ALTO User's Handbook
Post by: scarecrow on July 04, 2010, 03:34:03 PM
http://www.bitsavers.org/pdf/xerox/alto/AltoUsersHandbook.pdf
Title: Xerox Alto
Post by: sdinet on July 04, 2010, 04:34:20 PM
Yes you are correct, I need to boot via the Disk first.  And there lies my problem.  It appears the CRT and the Alto is in GOOD working order, however it appears there is something in need of repair with the Series 30 Disk Drive, I smell a burnt resistor somewhere, but cannot visually locate it.  My next step will be to find the bad component via a multimeter, will keep everyone posted!  Videos/Photos to come soon!

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