Canon imagePROGRAF TM-300 36" Large-Format Inkjet Printer with L36ei Scanner Kit - Manual (Page 832)

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Cause
The ink in the ink tank has run out.
What to Do
Open the ink tank cover, and then replace the ink tank before the ink in the sub-ink tank of this printer
becomes insufficient.
Replacing Ink Tanks
Note
• You can replace the ink tank even while printing.
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