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NOTES: Dell recommends that only a technically knowledgeable person perform this procedure. Dell recommends that you read the entire procedure before you begin. You must also be familiar with removing the system cover and locating the RIMMs. Dell recommends that you print the contents of the system User’s Guide for referencing important information that may not be available during critical procedures.
NOTE: For some Dell systems, you are given a choice to create a diskette con- taining the BIOS update files or to download a file you can use from the hard drive. Select the choice to use the file that creates an installation diskette.
RIMM1_A and RIMM2_A comprise channel A, and sockets RIMM3_B and RIMM4_B comprise channel B. Dell Precision 620 systems support a maximum of eight RIMMs (four RIMMs per MEC) for up to 3 gigabytes (GB) of total memory. NOTE: Although you can insert 512-megabyte (MB) RIMMs in each socket, the BIOS revision only supports a maximum of 3 GB.
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MEC cover RIMM1_A channel A RIMM2_A riser board RIMM3_B channel B RIMM4_B Figure 1. RIMM Socket Designations System Memory Upgrade...
RIMMs and reinstall the new 512-MB RIMMs, beginning with socket RIMM4_B and working up on each riser board in mirror fashion. Dell does not recommend or support the mixing of old and new 512-MB RIMMs in sockets RIMM1_A and RIMM2_A.
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Table 1. Sample Factory-Installed RIMM Configurations (per MEC) (continued) For Total Desired Memory: 2048 MB 2560 MB 3072 MB 3072 MB To upgrade memory, perform the following steps. NOTICE: See “Protecting Against Electrostatic Discharge” in your System Information Guide. CAUTION: Before you remove your computer cover, see “Safety First—For You and Your Computer”...
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MECs and modules to ensure that they are seated properly in their sockets. Then repeat steps 10 through 13. If the memory total is still incorrect, contact Dell for technical support. See “Get- ting Help” in the User’s Guide. support.dell.com Press the down-arrow key to move to the System Security option.
15. Run the Dell Diagnostics to verify that the memory modules are operating properly. NOTE: For information on troubleshooting and running the Dell Diagnostics, see “Troubleshooting” in the User’s Guide. Installing a RIMM NOTICE: Before you upgrade RIMMs, you must upgrade the BIOS. See “Upgrading the BIOS”...
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To remove a RIMM, press the securing clips outward simultaneously until the RIMM disengages from the socket (see Figure 3). It should pop out slightly. securing clips (2) Figure 3. Removing a RIMM support.dell.com System Memory Upgrade...