When I plug in my TPU according to instructions, the light in the
upper box doesn't come on. Instead the ordinary flatbed scanner light
remains on.

I think the system for the Perfection 1660 is the same.

Any suggestions? Or have I bought a dud one?

From within the scanner software, have you changed the scanning object type
to transparency or slide (i.e. not reflective type)?

Doug
--
Doug's "MF Film Holder" for batch scanning "strips" of 120/220 medium format
film:
http://home.earthlink.net/~dougfishe...lderintro.html

Yes, the Epson Twain window lets me select "Document Source" as "TPU:
Pos. Film." The problem is that the TPU light does not take over from
the flatbed scanner light. Nor is the Scan button active in TPU mode.

On Sun, 01 Feb 2004 02:22:12 GMT, "-" <(E-Mail Removed)> wrote:

>From within the scanner software, have you changed the scanning object type
>to transparency or slide (i.e. not reflective type)?
>
>Doug

"Richard Wright" <(E-Mail Removed)> wrote in message
news:(E-Mail Removed)...
> Yes, the Epson Twain window lets me select "Document Source" as "TPU:
> Pos. Film." The problem is that the TPU light does not take over from
> the flatbed scanner light. Nor is the Scan button active in TPU mode.
>
> On Sun, 01 Feb 2004 02:22:12 GMT, "-" <(E-Mail Removed)> wrote:
>
> >From within the scanner software, have you changed the scanning object
type
> >to transparency or slide (i.e. not reflective type)?

Plugged in the TPU at the rear? It's a separate cable.