primax: Thread: Colorado D600 is working !

Hi !

I have a primax colorado d600 scanner. I just tried your software and it works 
without source modification. An image have been correctly scanned, and the color 
settings seems to be good.

But I have one problem : the lamp doesn't come back to its initial position, and 
stays where it is. So the second scan isn't working, because the lamp start from 
the middle of the page and blocks when is at the end of the page. I tried to 
initialize this under windows, but the problem is the same : No return to the 
reference point, and the moter is blocking in the bottom of the page. I spent 2 
or 3 hours to try to solve this problem. I acheive once, unplugging the power 
and the parrallel port (but I think I was Lucky at this time). Now the scanner 
doesn't work since yesterday night, even under windows.

Some friends of mine told me that the problems appears sometimes on their 
scanners (they have the same model), and that they can't do anything, except 
wait for 2 weeks. And suddently, the scanner is working after a long period.
Strange !!! Thinking about bad capacitance discharge effect. I tried to 
discharge "by hand" the capacitors on the scanner board, but it didn't solve my 
problem.

PLEASE HELP !!!
Can anyone should indicate me if a such problem already appears ?? I'm open for 
all comments, remarqs, or just advices.

When I will solve this problem, I'm interested in helping the project, trying to 
write a specific front-end for this tool. If someone have the same idea, or have 
already started to work on a such front-end, I'm interested by working with him, 
or help him on the code.

I'm waiting for your replies !!

Thank you for your help.

And also thank you for the great tool that allow me to forget M$ ZindoZ$ to use 
my hardware.


	Romain ODDOART

Romain Oddoart wrote:
> But I have one problem : the lamp doesn't come back to its initial position, and
> stays where it is. So the second scan isn't working, because the lamp start from
> the middle of the page and blocks when is at the end of the page. I tried to
> initialize this under windows, but the problem is the same : No return to the
> reference point, and the moter is blocking in the bottom of the page. I spent 2
> or 3 hours to try to solve this problem. I acheive once, unplugging the power
> and the parrallel port (but I think I was Lucky at this time). Now the scanner
> doesn't work since yesterday night, even under windows.

I have not seen such a behavior up to now. Sounds quite strange. At
least it
should work under Windows.
You could try to write a carrige-move-back-only program. Have 
a look at the code.

Just some remarks about the "bad capacitance discharge effect". You 
should unplug even the parallel port cable. I have seen the scanner 
working with no real power supply as long as you don't turn on or move 
the lamp. It gets the power from the computer over the paralell port.

Marco
--
Marco Foglia | Paul Scherrer Institut  | phone     +41 56 310 36 39 
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Hi marco !

Thank you for your support.

I already tried to disconnect the parallel port cable, and the power cable, but 
it doesn't work. I really think this is an electrical problem, but not due to 
your software, because it doesn't work at all under windows now. If someone has 
already seen a such behavior, i will be happy to listen the advices.

I'll try to write a carrige-move-back-only program, trying to understand your 
code. Can you give me some advices to look at the code and start in a good 
direction ??

I will inform every one if I achieve to solve this problem, and I'm still 
waiting for someone who can help me.

Thank you.

	Romain

Hi Marco !

I wrote a carrige-return-only program based on your "carrige_backward" function, 
and IT WORKS !! The scan can return to the initial position. Last night, it was 
just a try, but I'll modify the code this week-end to achieve a clean carrige 
initialisation on each scan (perhaps a specific -return option, or something 
like that).

However, the scanner doesn't work anymore under windows (but no matter because 
it works totally under Linux ;)))

I will now start to work on a specific front-end for primax_scan software. I'll 
write it in tcl/tk (that is the graphical language I best know). My first wish 
is to achieve a "preview scan" (scan the entire A4 page with low resolution) and 
display it. After that, the user will chose the zone to scan directly on the 
preview image ; that will create the good -p and -d option to scan a specific 
zone.

I will see later for the other options, once this job will be finished !!

If someone want to help me, he is welcome !!

I'll send you the first example as soon as it works.


Thank you again for this great software.

Regards.

	Romain.

On 15-Oct-99 Romain Oddoart wrote:
> Hi Marco !
> 
> I wrote a carrige-return-only program based on your "carrige_backward" function, 
> and IT WORKS !! The scan can return to the initial position. Last night, it was 
> just a try, but I'll modify the code this week-end to achieve a clean carrige 
> initialisation on each scan (perhaps a specific -return option, or something 
> like that).
> 
> However, the scanner doesn't work anymore under windows (but no matter because 
> it works totally under Linux ;)))
> 
> I will now start to work on a specific front-end for primax_scan software. I'll 
> write it in tcl/tk (that is the graphical language I best know). My first wish 
> is to achieve a "preview scan" (scan the entire A4 page with low resolution) and 
> display it. After that, the user will chose the zone to scan directly on the 
> preview image ; that will create the good -p and -d option to scan a specific 
> zone.
> 
> I will see later for the other options, once this job will be finished !!
> 
> If someone want to help me, he is welcome !!
> 
> I'll send you the first example as soon as it works.
> 
Sounds good, but we recognized problems with low resolution scans. The original driver uses
a different method to achieve the preview, but there's no real work done towards this in our current driver.

Maybe the low-resolution stuff works with your model, would be nice if you could report this to us.


---
Christian Ordig             | Homepage: http://thor.prohosting.com/~chrordig/ 
Germany                     |    eMail: Christian Ordig ####@####.####
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