Epson PictureMate PM290 - Manual (Page 45)

PictureMate PM 260 / PM 290 Replacing the PicturePack (Photo Cartridge) 45
Englis
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7. Set the lever to the Lock position by sliding it to
the right.
Note:
Once the photo cartridge is installed, DO NOT
release or adjust the photo cartridge lever. If you
move the lever accidentally, remove the cartridge
and reinstall it.
8. Close the cartridge compartment cover.
Note:
If you cannot close the cartridge compartment cover,
the photo cartridge is not installed correctly. Go back
to the step 3 and eject the photo cartridge. Then install
the photo cartridge again.