Epson MR Series Technical Reference Manual page 280

CAUTION:
Remove the clip very carefully to avoid damaging any main circuit board
components.
6. After you have unhooked one side of the CPU cooler, you can easily remove the CPU cooler
by tilting it toward the other side and lifting it off.
7. Lift the CPU release lever in the direction of the arrow in the illustration until it is upright,
and then pull the CPU straight up.
lever
CAUTION:
To avoid any damage from contamination or static electricity, do not touch the pin
terminals of the CPU with your fingers.
To install, reverse the removal procedure.
Note:
When you install a CPU, be sure that the cut corner is in the position indicated in the illustration above.
9-64 Disassembly and Assembly
cut corner
Rev. I