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Replacing the ECPU Board Removing the ECPU Board <br />ECPU Board Installation <br />guide slots (one at top and <br />bottom). <br />Pry the board <br />off of its retention pin 3 retention <br />11 pins. <br />3 Disconnect each of the <br />three cables attached <br />to the ECPU board. <br />Pull the board straight out until you <br />disconnect it from the motherboard <br />connector and it clears the top and <br />bottom guides. Rotate it towards <br />you to clear the door. Hold the ECPU <br />board by its edges and avoid touching <br />components and connector pins. <br />Remove the grounding wrist <br />strap from its package and <br />wrap one end around your <br />wrist. Ahere the other and <br />to the side of the comm board <br />Turn OFF ac power to the . <br />0 1 console. Push SW1 down to tum <br />battery backup OFF. <br />Figure 1. • Removing the ECPU Board <br />co; Ies\e_-puout.eps <br />