c.Lower the CPU module along the vertical plastic guides until the module touches the motherboard slot socket. Lock the CPU module in place as follows:

i.With both hands, simultaneously turn and press the levers down to the fully horizontal position.

ii.Firmly press the module down into the socket until it is fully seated and the levers are fully locked.

2.Connect the AC power cord.

3.Detach the wrist strap.

4.Replace the side access cover.

See Section 7.3, “Replacing the Side Access Cover” on page 7-4.

5.Power on the system unit.

See Section 6.1, “Powering On the System Unit” on page 6-2.

10.2NVRAM/TOD

To remove and replace the NVRAM/TOD, proceed as follows.

10.2.1Removing the NVRAM/TOD

1.Power off the system unit.

See Section 6.2, “Powering Off the System Unit” on page 6-3.

2.Remove the side access cover.

See Section 7.1, “Removing the Side Access Cover” on page 7-2.

Caution Use proper ESD grounding techniques when handling components. Wear an antistatic wrist strap and use an ESD-protected mat. Store ESD-sensitive components in antistatic bags before placing them on any surface.

3.Attach a wrist strap.

See Section 7.2, “Attaching the Wrist Strap” on page 7-3.

4.Remove the power supply.

See Section 8.1.1, “Removing the Power Supply” on page 8-2.

Chapter 10 Motherboard and Component Replacement 10-5

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Sun Microsystems 60 service manual Nvram/Tod, Removing the NVRAM/TOD