Sun Microsystems Sun Ultra 80 Guía Inicial página 30

3. Locate an empty bank of four DIMM slots (two on the motherboard and two on
the memory riser assembly).
Note – Fill additional DIMM banks in this order: bank 1, bank 2, bank 3.
Bank 0 is the default DIMM position for DIMMs installed at the factory.
Caution – When you loosen the memory riser assembly in the next step, loosen
both of the assembly's thumbscrews simultaneously to avoid damaging the
connector.
4. Using the short leg of the torque-indicator driver (part number 340-6091), loosen
the thumbscrews, then use your hands to turn the thumbscrews simultaneously
until the assembly is loose.
Note – The torque-indicator driver included with your system is shipped in the
green holder that is stored in the center of the hard drive cage.
5. Lift the memory riser assembly from the chassis and lay it on an antistatic mat
with the DIMM slots facing upwards.
Caution – Hold DIMMs only by their edges. Place DIMMs and the memory riser
assembly on an antistatic mat whenever you set them down.
6. Install two DIMMs to the memory riser assembly and two DIMMs to the
motherboard as follows:
a. Position the DIMM into the slot connector such that the DIMM's double-
notched edge is on the end of the connector that has an ejection lever.
b. Press firmly on both DIMM top corners until the DIMM is fully seated.
Caution – Verify that the DIMMs are fully and evenly seated. Full DIMM seating is
verified by a clicking sound. Failure to properly seat the DIMM can cause electrical
shorts that can damage the DIMM and/or the system.
c. Continue installing DIMMs on the motherboard and memory riser assembly
until you have filled the DIMM bank with four identical DIMMs.
7. Repeat step 6 for any additional DIMM banks you are filling.
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