To remove the print head from the PIXMA TR150:
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With the printer powered on, open the print head cover so that the print head holder moves to the replacement position.
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Remove the ink tanks by pressing the tab (A) on the front of each ink tank and then lifting them.
Do not touch the print head lock lever tabs (B).
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After removing the ink tanks, gently press the tabs on the print head lock lever inward.
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After pressing the tabs inward, gently lift the lock lever.
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Gently lift the print head from the print head holder to remove it.
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To reseat the print head, place the print head back into the print head holder.
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Make sure that the arrow marks on the print head and the print head holder are aligned.
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Close the print head lock lever. Push tabs until they click to lock the lever into place.
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Reinsert the ink tanks. Insert the front end of the ink tank at a slant. Then press the push mark on the ink tank until the ink tank snaps into place.
Make sure that the ink lamp lights up.
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Close the print head cover.
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