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0E137a00.book Page 1 Thursday, May 3, 2001 1:36 PM
Dell Precision™ WorkStation 620
System Memory Upgrade
www.dell.com | support.dell.com
0E137a00.book Page 2 Thursday, May 3, 2001 1:36 PM
0E137a00.book Page 1 Thursday, May 3, 2001 1:36 PM Dell Precision™ WorkStation 620 System Memory Upgrade www.dell.com | support.dell.com
0E137a00.book Page 2 Thursday, May 3, 2001 1:36 PM Notes, Notices, and Cautions Throughout this guide, blocks of text may be accompanied by an icon and printed in bold type or in italic type. These blocks are notes, notices, and cautions, and they are used as follows: NOTE: A NOTE indicates important information that helps you make better use of your computer system. NOTICE: A NOTICE indicates either potential damage to hardware or loss of data and tells you how to avoid the problem. CAUT
0E137a00.book Page 1 Thursday, May 3, 2001 1:36 PM Dell Precision™ WorkStation 620 System Memory Upgrade This document provides instructions for upgrading the Rambus inline memory mod- ules (RIMMs) on the Dell Precision WorkStation 620. Dell Precision 620 systems support dual, direct, Rambus dynamic random-access memory (RDRAM) modules. These RIMMs feature error checking and correction (ECC). NOTES: Dell recommends that only a technically knowledgeable person perform this procedure. Dell r
0E137a00.book Page 2 Thursday, May 3, 2001 1:36 PM d. Select the appropriate operating system (OS) and language for the computer to be updated. e. Select FlashBIOS Updates for the download category. f. Click Go and follow the instructions on screen to create a diskette containing the BIOS update files. 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 th
0E137a00.book Page 3 Thursday, May 3, 2001 1:36 PM to go out (see the internal system board label that is attached to the cover of your computer). 3. Ground yourself by touching an unpainted metal surface on the chassis, such as the metal around the card-slot openings at the back of the computer, before touching anything inside your computer. Dell recommends that you use a wrist grounding strap in this operation. While you work, periodically touch an unpainted metal surface on the compute
0E137a00.book Page 4 Thursday, May 3, 2001 1:36 PM MEC cover RIMM1_A channel A RIMM2_A riser board RIMM3_B channel B RIMM4_B Figure 1. RIMM Socket Designations 4 System Memory Upgrade
0E137a00.book Page 5 Thursday, May 3, 2001 1:36 PM RIMM Installation Guidelines You must install RIMMs in pairs. This means that the RIMM in each socket on one MEC must be the same memory capacity, density, and speed as the corresponding RIMM in the same socket on the other MEC. Also, for either channel A or B of each MEC, if one socket contains a RIMM, then the other socket must contain either another RIMM or a continuity RIMM (CRIMM). As an example, if you install only one pair of RIMMs
0E137a00.book Page 6 Thursday, May 3, 2001 1:36 PM Table 1. Sample Factory-Installed RIMM Configurations (per MEC) (continued) Populate both MECs as follows: For Total RIMM4_B Desired RIMM1_A (top) RIMM2_A RIMM3_B (bottom) Memory: 2048 MB Empty CRIMM 512 MB 512 MB 2560 MB CRIMM 256 MB 512 MB 512 MB 3072 MB 256 MB 256 MB 512 MB 512 MB 3072 MB CRIMM 512 MB 512 MB 512 MB To upgrade memory, perform the following steps. NOTICE: See “Protecting Against Electrostatic Discharge” in your System In
0E137a00.book Page 7 Thursday, May 3, 2001 1:36 PM 11. Reconnect the computer and peripherals to their power sources, and turn them on. As the system boots, it detects the presence of the new RIMMs and automati- cally changes the system configuration information in system setup. NOTES: Adding or removing RIMMs causes the following message to be dis- played at the next system start-up: The amount of system memory has changed. After you replace the cover, if the chassis intrusion option is se
0E137a00.book Page 8 Thursday, May 3, 2001 1:36 PM 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” on page 1 for instructions. If a RIMM is already installed in the socket you want to use, you must remove it. For instructions, see “
0E137a00.book Page 9 Thursday, May 3, 2001 1:36 PM Removing a RIMM NOTICE: To avoid damage to the memory module, press the securing clips with equal force applied at each end of the socket. 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 9
0E137a00.book Page 10 Thursday, May 3, 2001 1:36 PM 10 System Memory Upgrade
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0E137a00.book Page 2 Thursday, May 3, 2001 1:36 PM Printed in the U.S.A. 00E137 A00 P/N 0E137 Rev. A00 www.dell.com | support.dell.com