Caution Each DIMM bank must contain at least four DIMMs of equal density (for example: four 32-Mbyte DIMMs) to function properly. Do not mix DIMM densities in any bank.

Note The system unit must have at least four identical DIMMs installed in any DIMM bank. TABLE 10-1identifies DIMM installation locations.

TABLE 10-1DIMM Bank and Bank Quad

Bank Bank Quad

0U0701, U0702, U0703, and U0704

1U0801, U0802, U0803, and U0804

2U0901, U0902, U0903, and U0904

3U1001, U1002, U1003, and U1004

10.5.1Removing a DIMM

Caution Handle DIMMs only by the edges. Do not touch the DIMM components or metal parts. Always wear a grounding strap when handling a DIMM.

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 the wrist strap.

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

Chapter 10 Motherboard and Component Replacement 10-13

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Sun Microsystems 60 service manual Removing a Dimm, 1DIMM Bank and Bank Quad