Epson EL 486UC, User Manual

Page: 72 / 132

Replacing the Oscillator
If you are installing a 486SX/33, a 486DX/33, or a 486DX2/66
processor, you must replace the existing oscillator with an
Ecliptek 33 MHz oscillator (EC1100). Follow these steps to
remove the existing oscillator and replace it with the new
oscillator:
1.
2.
3.
4.
5.
Use the illustration on page 3-5 to locate the oscillator on the
system board.
Use scissors or a small knife to cut the tie wrap securing the
oscillator to the system board, then discard the tie wrap.
Using your fingers, pull the oscillator straight up and set it
aside.
Remove the new oscillator from its package, being careful
not to touch the pins.
Position the oscillator over the socket. Make sure pin 1
(identified with a dot) aligns with pin 1 on the socket. A
triangle traced on the system board identifies the side of the
socket containing pin 1.
dot (pin 1)
triangle
Installing and Removing Options 3-29