Canon Pro-1000 series Online Manual page 268

Important
• Do not touch the contact (A) or joint (B) of the ink tank.
8. Insert the new ink tank straight into the slot.
Make sure that the position of the ink tank matches the label.
9. Firmly push the mark (PUSH) in front of the ink tank until it clicks into place.
After installing the new ink tank, the corresponding ink lamp indication on the LCD comes on.
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