Chapter 10 Motherboard and Component Replacement 10-13
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. TABLE10-1 identifies DIMM installation locations.
10.5.1 Removing 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 Section6.2, “Powering Off the System Unit” on page6-3.
2. Remove the side access cover.
See Section7.1, “Removing the Side Access Cover” on page7-2.
Caution – Useproper 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 Section7.2, “Attaching the WristStrap” on page 7-3.
TABLE10-1 DIMM Bank and Bank Quad
Bank BankQuad
0 U0701, U0702, U0703, and U0704
1 U0801, U0802, U0803, and U0804
2 U0901, U0902, U0903, and U0904
3 U1001, U1002, U1003, and U1004