On Wed, 23 Feb 2000 06:51:40 -0600, "[EMAIL PROTECTED]" <[EMAIL PROTECTED]> wrote:
> The inkjet uses 14V DC, tip negative, the backpack needs 18V DC, but
> doesn't say whether tip is negative or positive. I don't know where my
> multitester has gone either.
> The device did initialize there for a bit earlier tonight, while on the
> inkjet cord, but the drive wouldn't open or read. Now the drive opens, but
> the device won't initialize.
> Does anyone know how I can figure out if it's DOA or what? Damn, these
> things are expensive too. I don't think I can replace it.
The five worst power-supply related things you can to to a device, in
order, are:
1) Supply a voltage that is much too high.
2) Supply a voltage that is a little too low.
3) Supply AC where DC is required.
4) Supply DC in the wrong polarity.
5) Supply a voltage that is a little too high.
If you supplied the wrong polarity it wouldn't work at all, so we're
looking at #2. Not time to panic yet, but don't use the inkjet supply
anymore-- you'll lose the backpack's regulator.
If it sort of works with the inkjet cord, but not with its' own- sorry,
but you DID blow the regulator. Still not time to panic. I can walk you
through this off-list; that way you won't even have to pay shipping. If
it's using what I think it is, the part costs about three USD.
boB
-- Arachne V1.60;b1, NON-COMMERCIAL copy, http://arachne.cz/
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