Question about Casio DR-250HD Calculator

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Changing the ribbon

I am having difficulty opening the cover so I can change the ribbon
I don't think it's ever been done and this machine is more than a few years old and understandably hard to read now.
I don't want to break the cover, but is there some trick or perhaps something is jamming it internally?

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I just had the same problem today except I needed open because of a paper jam. Anyways, I started by using a philips head screwdriver and pried by where the plug is and worked my way around. The cover is held on by the screws on the bottom and some tabs inside. You kind of have to pull if open as it is very stubborn. Good luck!

Posted on Jan 12, 2009

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Posted on Jan 02, 2017

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How do you change ink on a canon p20-dh calculator


For accounting offices and stores, calculators that produce a printed paper are indispensable. Canon's desktop or commercial printing calculators use ribbon tape, and you'll need to change the ribbon when it is used up. All Canon desktop and commercial printing calculators use the same method for changing the ribbon.
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Can't see the machine very well from here but I assume it's a typewriter. Poor eyesight, see?

First, turn the typewriter OFF, then slide the carrier to the center. Not because of magic, but it makes easier to work that way.
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Hello,
You can use the below link that will take you to the brother FAQ website. Follow the FAQ to change the ribbon.
http://welcome.solutions.brother.com/BSC/public/us/ca/en/faq/faq/000000/000500/000045/faq000545_001.html?reg=us&c=ca&lang=en&prod=fax575_us&Cat=7
Thanks,
Pat

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Try these instructions. If you are still unsure, you may need to take it to a service center for cartridge installation:

WARNING: Be careful not to cut yourself on the sharp edges of the metal part shown in the illustration.



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1 Push the OPEN button to open the top cover.
2 Remove the stopper from the printing cartridge.


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3 Turn the black spool on the right clockwise to tighten the ribbon.


4 Install the printing cartridge by inserting the recessed c5b8824.jpgfirst and placing the cartridge into its four holders.


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5 Press down on both sides of the cover to close it securely.

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