Advice for tape drive repair / maintenance
ard at p850ug1.demon.co.uk
Mon Dec 25 14:07:25 CST 2006
> What people want and expect out of equipment has changed. If it hadn't,
> we'd all still be driving around in Morris Minors. That's actually a
I wish I was!
> good example - it's impossible to achieve modern emissions figures from
> a car engine fitted with a carburettor, and there is a lot to go wrong
> in one. Fuel injection systems keep better track of mixture giving
You know, it all my years of car repair (although I don't drive, I've
repaired my father's cars for 30 years or so), I've only ever had to do
2 carburetter repairs. A needle valve that stuck closed, and a torn
diaphragm in a Znetih CDS.
> cleaner emissions and better economy, and there's less to go wrong. If
> anything does go wrong, it will tell you what's upset it.
And now he has this Skoda with an electronic controller for the
igntiion/injhection and another one for the transmission. Sure I can read
out the fault codes and follow the procedures in the workshop manual if
it goes wrong. But if it fails '7 miles from nowherr and beyond' I think
I would have a much better chance of fixing a carburetter than this
system. (as indeed I once did to a friend's Land Rover. Seriously, the
police called me to say this chap had broken down and he felt I was the
one person who could get it going again. I did. A bit of insulating tape
to patch up the torn diaphragm in the carbutetter got him going again and
got him home. Next day he fitted a new diaphragm.
> Look at household appliances, too - how much do you think it costs to
> make that big cam switch inside a washing machine? It's much cheaper to
> replace all that with a PIC microcontroller (most common MCU I've seen
> in washing machines) and a few triacs, maybe a relay or two.
> Furthermore, if it turns out that there's a problem (Hey, the half-hour
> wash cycle doesn't rinse properly!) it's easy to fix.
Eh? I've rebuilt those cam-timer programmers. And I could do it again.
Much more quickly than having to reapir something based on a PIC with no
source code or even object code available.
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