Support code 1300 is a paper jam in a Canon PIXMA — paper is stuck in the output or feed path. Remove it slowly and check for scraps.
Work through these in order; most people are fixed by the first two or three.
Switch off, then remove the paper steadily from the output side; if it won't budge, check the rear door/feed.
Inspect the rear unit and feed path for small scraps and remove them.
Fan the stack, don't overfill, and set the guides snug. Use flat, dry paper.
Turn off and on to clear the message once the path is clear.
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