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HP printer stops canon printer and mustek scanner from working

Posted on 2006-11-28
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Last Modified: 2010-04-12
Hi,

I've already solved this problem but I want to understand what could have caused the issue.

Client was running Windows 2000 prof on a SFF Compaq P3 computer    

Client introduced an HP multi-function printer via USB to a HUB which was already connected to a Canon BJ printer and Mustek Scanner.  As soon as she did that both the Canon Prntr and Mustek Scanner stopped working.  

When a printjob was sent to the Canon only blank pages were printed.  And the scanner failed to scan.

When the Canon was disconnected the HP and Scanner worked fine.

There was enough ink in all the cartridges.  The printer was setup correctly as it had worked fine until the HP was added.

Dodododododododo ...

Any thoughts welcome.
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Question by:AndreasHagen
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Expert Comment

by:nobus
ID: 18035123
>>  via USB to a HUB    <<  what hub? you should use a powered usb hub in this case
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Author Comment

by:AndreasHagen
ID: 18035366
Hi nobus,

Is it documented somewhere that 2+ USB devices require a powered hub?

Andreas
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nobus earned 280 total points
ID: 18035394
an usb port can only provide 500 mA , so it is best to use a powered hub if you connect several devices.
google the net - many problems show with an non powered one !
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Author Comment

by:AndreasHagen
ID: 18037173
Thanks for you help ;-)
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