RE: Re: OT USB Scanner stops working after a few scans

["Dr John Tankard" <john@xxxxxxx>]

I rang Epson and they say it's the VIA chip that has a problem and MS
does not support the chipset, although I understand VIA have a driver
that can sort the problem

John

> -----Original Message-----
> From: Phil Harris [mailto:phillip.harris1@xxxxxxx]
> Sent: 21 September 2001 21:22
> To: ukha_d@xxxxxxx
> Subject: RE: [ukha_d] Re: OT USB Scanner stops working after
> a few scans
>
>
>
> Yeah but this seems to be implying that the PSU will work in
> a wall socket but not in an extension stripblock...
>
> Phil
>
> > -----Original Message-----
> > From: Keith Doxey [mailto:ukha@xxxxxxx]
> > Sent: 21 September 2001 20:44
> > To: ukha_d@xxxxxxx
> > Subject: RE: [ukha_d] Re: OT USB Scanner stops working after a
few
> > scans
> >
> >
> > USB has current limiting to prevent damage to the host PC.
> >
> > If you are just plugging one device in it will be fine but
multiple
> > devices could overload the supply. A reboot clears it because the
> > overload clears for long enough to reset the trip.
> >
> > Best to use its own PSU if possible
> >
> > Keith
> >
> > > -----Original Message-----
> > > From: paul.murgatroyd@xxxxxxx
> > > [mailto:paul.murgatroyd@xxxxxxx]
> > > Sent: 21 September 2001 13:39
> > > To: ukha_d@xxxxxxx
> > > Subject: [ukha_d] Re: OT USB Scanner stops working after
> a few scans
> > >
> > >
> > > No Phil,
> > >
> > > I kid you not..
> > >
> > > >From http://www.umax.co.uk/support/faqs/usb.htm
> > >
> > > USB - Problems Caused by Low Power
> > > Problems of "scanner not found" or quit/crash
during scans can be
> > > caused by an excessive power load on the USB ports - make
> sure that
> > > all USB devices with external power supplies are switched ON
(to
> > > prevent them drawing power from the bus). If some devices
> are self-
> > > powered (ie no external power supply) you may need a
"powered USB
> > > hub". In some cases the problems are caused by a tiny
power drain
> > > which can be fixed by plugging the scanner's external
> power supply
> > > directly in to a wall socket.
> > >
> > >
> > >
> > > --- In ukha_d@y..., "Phil Harris"
<phillip.harris1@v...> wrote:
> > > >
> > > > > 1. Make sure that the scanner is plugged in to its
own power
> > > source,
> > > > > if possible try directly plugging it into the
mains, according
> > > the
> > > > > UMAX website, the power loss between the plug and
the
> four gang
> > > block
> > > > > can be enough to do it.
> > > >
> > > > This *HAS* to be a wind up by UMAX?
> > > >
> > > > Phil
> > >
> > >
> > >
> > > For more information: http://www.automatedhome.co.uk
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> > >
> >
> >
> >
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