Canon imagePROGRAF PRO-300 13" Photographic Inkjet Printer - Manual (Page 638)

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Cause
Protective materials for shipping may still be attached.
What to Do
Open the top cover and make sure that the protective materials for securing the print head holder have
been removed.
If the protective materials are still there, remove them and close the top cover.
In the case of the first printer setup, click here, select your printer name on the page, and follow the
instructions.
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