old Laserdisk players
marvin at west.net
Sun Nov 11 10:33:47 CST 2007
I still have 30 or 40 LD-V1000s (basically NOS) so I didn't feel too bad about
tearing one of them (that didn't work the first time) apart. What I found
interesting is that they use a Z80 as the processor. Also, most of the ones I
have gave significant picture jitter when I first checked them out. Turned out
that there is a pot inside that has a connection to where the laser is on the
disk. That pot somehow got "noisy" over the past 15 - 20 years they have been
sitting and a combination of contact cleaners made the machine operate as new
again. And the service manual is available on-line at the Dragon's-Lair-Project
website. As an aside, that website also has the diagrams to make up a centronics
plug to be able to start the laserdisk playing. *REALLY* nice for checking out a
unit! A friend of mine also has all of the alignment jigs in case I wanted to go
that far into repairing these things.
> From: Jeff Jonas <jeffj at panix.com>
> I pulled apart an old InfoTrac library system that used a
> Pioneer LD-V1000 since CD-ROM drives were not yet available.
> Top loader, CAV disks only. Real He-Ne laser on the sled.
> The Centronix connector was a proprietory parallel port
> controlling video playback, getting frame #
> and it allowed reading digital data if it was recorded in that format
> (video playback was still NTSC, no digital at all, not even a frame buffer).
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