I have powered up the LA36 with the Selenar Graphics board in it, and
>from the information kindly obtained by list members (Byte Magazine
article about the Selenar Graphics II), I have been able to verify that
the unit indeed works. The graphics mode works, and all of the other
features documented in the Byte article seem to function properly.
The issue that I've found is that only 5 of the 7 print pins are
working. Numbered with the top pin as number 1, it is the 3rd and 6th
pins that are either not firing at all, or are jammed such that they
can't come forward enough to make an impression.
I can't find a service manual for this unit online anywhere, so I'm
wondering what the best approach to diagnosis would be. I do have
schematics, but since the unit has a Selenar Graphics II logic board,
I'm not sure how well the schematics will help. Since the Selenar board
replaces the stock logic board, I can safely assume that it retains the
pinouts for the connectors that go from it to the power board that has
the drivers for the solenoids in the printhead. So, I can probably
scope out the drivers to see if they are firing on pin 3 and 6 when
printing characters that require those dots, which I will do when I have
time, but I'm wondering the next step would be if I find that there are
firing pulses coming out of the pin drivers for pin 3 and pin 6.
Obviously, if I find that the pulses aren't being generated, then I have
to dig into the solenoid drivers for these pins and figure out what has
failed and fix it.
If I find that the solenoid drivers are OK, then what should be done
next?
Would it be to remove the printhead and do what Tony suggested, which
would be to use a bench power supply (I have a good Tektronix bench
supply does truly does deliver 0.00V) to try to fire the solenoids to
see if they are gummed up? If so, how do I go about removing the
printhead to do this? Just from looking at things, it looks like I would
have to do a lot of disassembly to get the printhead out of there. Does
the printhead come off separately from the carriage that it rides on, or
do I have to remove the whole carriage assembly?
Any guidance would be most appreciated.
Thanks,
Rick Bensene
Folks,
Anyone have a manual for one of these? The 512 is online, but I can't
seem to find one for the '1000. Presumably this thing speaks 4010, but
I'd like to know more about all the assorted connectors and such.
Cheers,
De
> All,
>
> The subject says it all. I have a ton of data on an old Apple 2 I'd
> like to get off of it. I tried ADTPro using the audio/tape ports on an
> Apple ][e but I could never get it dialed-in correctly.
I would briefly mention that if you haven't tried audio ADTPro lately,
the 1.2.6 release and above has a fix that makes audio transfers
reliable. Not a lot faster, but at least it doesn't quit halfway through.
> Does anyone have one laying around that could be put to good use?
Tony Diaz's shop has them for sale:
http://16sector.com/shop/a2cards/
Some posting on another list gave me a hankering for wanting to try to
get the old AIX for x86/PS2 systems running in a VM.
I have two old Floppy disks (3.5") labelled AIX BOOT and AIX INSTALL
... the BOOT disk boots but doesn't give an option for installing from
the install disk.
The install disk doesn't really seem to boot.
I assume there are more than just these two disks to get the OS
running. Anyone out there have a source?
--
-Jon
Jonathan Katz, Indianapolis, IN.
At 04:23 PM 29/09/2013, you wrote:
>http://i253.photobucket.com/albums/hh58/arrow_runner/20130303_152453_zps397…
>
>I had this from when I was a kid (yes that's me). I have a 5170 now and
>would like to see if I can get an identical monitor to that one.
>
>Thanks!
>
>--
>Sent from my time machine
I have quite a few small amber monitors, don't know if any
are Goldstar. Where are you located?
Charlie Fox
Charles E. Fox Video Productions
793 Argyle Rd.
Windsor Ontario N8Y3J8
519-254-4991
www.chasfoxvideo.com
I'm looking for around 200 DE9 to 10-pin pigtails for my P112 project.
What I'm finding on Ebay and Alibaba are either small quantities with high
prices or low prices with 10,000 unit minimums. Does anyone here have or
know where I can get a good deal on 200 or so of these beasties?
--
David Griffith
dgriffi at cs.csubak.edu
Clearing my storage unit and have a few bits and pieces of Sun stuff if
anyone is interested. All items are not tested, so for parts only, and they
are free but collection only. I have some pictures.
Sun 3/60 - seems complete with colour frame buffer and memory
Sun 3/80 - case, motherboard, floppy drive and PSU only (no memory or HD)
Sun 3/80 - case only
Sun 2 monitor on swivel pedestal. This looks to be mono ECL but serial number is hard to
read so not sure. Hard to find these days.
A large CPU board - I think from a SPARCserver of some kind (501-2055), it is fully populated
with memory, has an SBUS card (frame buffer possibly), and two CPU modules fitted.
A boxed Sun keyboard (probably Sun sparcstation era).
Collection from South bay area (near San Jose, CA). All items free. Prefer someone to take
everything in one go.
Email me if interested.
Hi! The S-100 Parallel IO PCBs are almost all gone. This message is a
courtesy "heads up" that if you want one or more PCBs please contact me
right away.
The S-100 Parallel IO board which provides four input parallel ports, four
output parallel ports, and a PC compatible Centronics port.
It has debugging LEDs and other features to help get your S-100 system
working in top shape.
The board is designed to be reliable and easy to assemble. The schematic
and PCB layout files are on the N8VEM wiki here
http://n8vem-sbc.pbworks.com/w/browse/#view=ViewFolder¶m=S-100%20Paralle
lIO
There is an article on S100computers.com here which describes the prototype
board.
http://www.s100computers.com/My%20System%20Pages/Parallel%20Ports%20IO%20Boa
rd/Parallel%20Ports%20IO%20Board.htm
The PCBs will be $20 each as per the usual arrangement. Shipping in the US
is $3 for a single PCB and $2 for each additional PCB. Shipping
internationally is $10 for a single PCB and $3 for each additional PCB.
This is for the bare basics USPS first class postage with no tracking or
insurance. The builder assumes all risk of delivery as per usual
arrangement.
Please send a PayPal to LYNCHAJ at YAHOO.COM with "S-100 Parallel IO board" to
receive your board. Thanks and have a nice day!
Andrew Lynch
PS, alternatively you can order your S-100 Parallel IO PCB from eBay.
Please see my auctions here
http://shop.ebay.com/lynchkl/m.html
