Epson 1500 - Manual (Page 155)

Sector IC number
A (for ActionLaser 1000 only) 31,32,33,34
B 10,11,12,13
C 14,15,16,17
1. Make sure that all the pins on the chip are straight. The pins
should point inward at slightly less than a 90° angle as
shown below. If any of the pins are bent, straighten them by
gently pushing them back into alignment with the other
pins.
2. Align the pins with the holes in the socket. Be sure that the
small notch on the end of the chip is facing to your left as
shown below.
notch
CAUTION:
Be sure to insert the chip so that the small notch on the
end of the chip is aligned with the notch on the chip socket.
Inserting the chips incorrectly will damage the printer.
Options 5-41