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10Upgrading System Memory in Cisco 3600 Series Routers78-3636-05Safety RecommendationsWarningMeansdanger. You are in a situation that could cause bodi
11Upgrading System Memory in Cisco 3600 Series Routers78-3636-05Safety RecommendationsWarningRead the installation instructions before you connect the
12Upgrading System Memory in Cisco 3600 Series Routers78-3636-05Safety RecommendationsWarningBefore performing any of the followingprocedures,ensure t
13Upgrading System Memory in Cisco 3600 Series Routers78-3636-05Safety RecommendationsWarningHazardous network voltages are present in WAN ports regar
14Upgrading System Memory in Cisco 3600 Series Routers78-3636-05Tools and Equipment NeededCaution For safety, periodically check the resistance value
15Upgrading System Memory in Cisco 3600 Series Routers78-3636-05Opening the RouterRemoving the Router Cover (Cisco 3620, Cisco 3631, Cisco 3640)Follow
16Upgrading System Memory in Cisco 3600 Series Routers78-3636-05Opening the RouterFigure 2 Removing the Cisco 3631 Router CoverFigure 3 Removing the C
17Upgrading System Memory in Cisco 3600 Series Routers78-3636-05Opening the RouterStep 3 Turn OFF the power and unplug the power cord.WarningBefore op
18Upgrading System Memory in Cisco 3600 Series Routers78-3636-05Replacing DRAM and SDRAMFigure 4 Removing the Cisco 3660 Mainboard TrayCaution The mai
19Upgrading System Memory in Cisco 3600 Series Routers78-3636-05Replacing DRAM and SDRAMFigure 5 DRAM SIMM Locations in the Cisco 3620 RouterFigure 6
2Upgrading System Memory in Cisco 3600 Series Routers78-3636-05Memory Capacities• Memory Configurations, page 3• Safety Recommendations, page 9• Tools
20Upgrading System Memory in Cisco 3600 Series Routers78-3636-05Replacing DRAM and SDRAMSIMMs are manufactured with a polarization notch to ensure pro
21Upgrading System Memory in Cisco 3600 Series Routers78-3636-05Replacing DRAM and SDRAMFigure 8 Removing DRAM SIMMsStep 4 Hold the SIMM by the edges
22Upgrading System Memory in Cisco 3600 Series Routers78-3636-05Replacing DRAM and SDRAMFigure 9 Installing DRAM SIMMsStep 5 Ensure that each SIMM is
23Upgrading System Memory in Cisco 3600 Series Routers78-3636-05Replacing DRAM and SDRAMFigure 10 SDRAM DIMM Locations in the Cisco 3631 RouterFigure
24Upgrading System Memory in Cisco 3600 Series Routers78-3636-05Replacing DRAM and SDRAMDIMMs are manufactured with polarization notches to ensure pro
25Upgrading System Memory in Cisco 3600 Series Routers78-3636-05Replacing DRAM and SDRAMStep 1 Attach an ESD-preventive wrist strap and ensure that it
26Upgrading System Memory in Cisco 3600 Series Routers78-3636-05Replacing Cisco Flash Memory SIMMsInstalling SDRAM DIMMsFollow these steps to install
27Upgrading System Memory in Cisco 3600 Series Routers78-3636-05Replacing Cisco Flash Memory SIMMsFigure 15 Cisco Flash Memory SIMM Locations on the C
28Upgrading System Memory in Cisco 3600 Series Routers78-3636-05Replacing Cisco Flash Memory SIMMsFigure 17 Cisco Flash Memory SIMM Locations on the C
29Upgrading System Memory in Cisco 3600 Series Routers78-3636-05Replacing Cisco Flash Memory SIMMsStep 4 Remove the SIMM from its socket by pulling th
3Upgrading System Memory in Cisco 3600 Series Routers78-3636-05Memory ConfigurationsMemory ConfigurationsFor information on configuring dynamic (DRAM
30Upgrading System Memory in Cisco 3600 Series Routers78-3636-05Replacing ROMStep 4 Beginning with bank 0, insert the Cisco Flash memory SIMM at an an
31Upgrading System Memory in Cisco 3600 Series Routers78-3636-05Replacing ROMStep 1 Attach an ESD-preventive wrist strap and ensure that it makes good
32Upgrading System Memory in Cisco 3600 Series Routers78-3636-05Replacing ROMFigure 21 ROM Location on the Cisco 3640 MainboardFigure 22 ROM Location
33Upgrading System Memory in Cisco 3600 Series Routers78-3636-05Replacing ROMFigure 23 Removing the ROM from the Cisco 3660 MainboardStep 5 Orient and
34Upgrading System Memory in Cisco 3600 Series Routers78-3636-05Closing the RouterClosing the RouterBefore closing the router, make sure that all cabl
35Upgrading System Memory in Cisco 3600 Series Routers78-3636-05Closing the RouterFigure 26 Replacing the Cisco 3631 Router CoverFigure 27 Replacing t
36Upgrading System Memory in Cisco 3600 Series Routers78-3636-05Closing the RouterStep 5 Lower the front of the cover onto the chassis, making sure th
37Upgrading System Memory in Cisco 3600 Series Routers78-3636-05Replacing Connections to the RouterFigure 28 Replacing the Cisco 3660 Mainboard TraySt
38Upgrading System Memory in Cisco 3600 Series Routers78-3636-05Testing ROM InstallationWarningRead the installation instructions before you connect t
39Upgrading System Memory in Cisco 3600 Series Routers78-3636-05Obtaining DocumentationUsing the xmodem CommandIf the system image is erased from Cisc
4Upgrading System Memory in Cisco 3600 Series Routers78-3636-05Memory Configurations–Have the same access time (in nanoseconds).• SIMMs in banks 2 and
40Upgrading System Memory in Cisco 3600 Series Routers78-3636-05Obtaining Technical AssistanceDocumentation FeedbackIf you are reading Cisco product d
41Upgrading System Memory in Cisco 3600 Series Routers78-3636-05Obtaining Technical Assistance• Priority level 4 (P4)—You need information or assistan
42Upgrading System Memory in Cisco 3600 Series Routers78-3636-05Obtaining Technical Assistance
43Upgrading System Memory in Cisco 3600 Series Routers78-3636-05Obtaining Technical AssistanceThis document is to be used in conjunction with Cisco 36
44Upgrading System Memory in Cisco 3600 Series Routers78-3636-05Obtaining Technical Assistance
5Upgrading System Memory in Cisco 3600 Series Routers78-3636-05Memory ConfigurationsTable 3 32-Bit DRAM Configuration for Cisco 3640 RoutersBank 0 (SIM
6Upgrading System Memory in Cisco 3600 Series Routers78-3636-05Memory ConfigurationsSDRAM DIMMs (Cisco 3631 and Cisco 3660 Routers)Cisco 3631 and Cisc
7Upgrading System Memory in Cisco 3600 Series Routers78-3636-05Memory ConfigurationsCisco Flash MemoryCisco IOS software on Cisco 3600 routers is stor
8Upgrading System Memory in Cisco 3600 Series Routers78-3636-05Memory ConfigurationsStep 1 To see how much Cisco Flash memory is currently installed i
9Upgrading System Memory in Cisco 3600 Series Routers78-3636-05Safety RecommendationsSafety RecommendationsFollow these guidelines to ensure general s
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