Epson Stylus 1500 Reference Manual page 63

8. Lower the ink cartridge into its holder with the label facing
up and the arrow pointing to the back of the printer. Do not
push down on the ink cartridge.
9. Press the ink cartridge clamp down until it locks in place.
You will feel some resistance.
Caution:
c
Once you install the ink cartridge, do not open the clamp
or remove the ink cartridge except to replace it with a new
one. Otherwise, the print head and cartridge may become
unusable.
Once you remove a cartridge, do not reuse it. Reusing a
cartridge that has been removed may damage the print
head.
10. Press the Alt button again. The Pause light flashes as the
printer charges the ink delivery system and moves the
carriage to its home (far right) position.
Even if you don't press Alt, the printer moves the carriage
back to its home position about 30 seconds after you install
the cartridge.
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