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Installing and Upgrading Internal Components in Cisco 3800 Series Routers
OL-5975-04
SDRAM DIMM Removal and Installation
Figure 52
Component Locations on a Cisco 3845 Motherboard
SDRAM DIMM Removal and Installation
Cisco 3800 series routers ship with 256 MB of ECC DDR SDRAM. The two DIMM slots can be
upgraded with 128-MB, 256-MB, or 512-MB DIMMs to a maximum of 1024 MB. If only one SDRAM
DIMM is used, it can be installed in either DIMM connector.
Caution
When you remove or install DIMMs, always wear an ESD-preventive wrist strap, and ensure that it
makes good contact with your skin. Connect the equipment end of the wrist strap to the metal part of the
router.
Caution
Handle DIMMs by the edges only. DIMMs are ESD-sensitive components and can be damaged
by mishandling.
1
PVDM3
6
AIM1
2
PVDM2
7
MEM0
3
PVDM1
8
MEM1
4
PVDM0
9
Jumper headers
5
AIM0
10
Power connector for fan tray assembly
4
2
1
3
8
5
6
7
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9
10
Summary of Contents for 3800 Series
Page 7: ...Safety Warnings 7 Introduction to Hardware Documentation OL 5965 01 ...
Page 8: ...Safety Warnings 8 Introduction to Hardware Documentation OL 5965 01 ...
Page 30: ...Regulatory Compliance 16 Overview of Cisco 3800 Series Routers OL 5966 01 ...
Page 48: ...Grounding the Router 18 Installing Cisco 3800 Series Routers in an Equipment Rack OL 5969 01 ...
Page 80: ...More Troubleshooting Help 50 Troubleshooting Cisco 3800 Series Routers OL 5972 01 ...
Page 102: ...Removing SFP Modules 72 Installing SFP Modules in Cisco 3800 Series Routers OL 5968 01 ...