Safety Warnings

Safety with Electricity, page 79

Removing the Cover from a Cisco 3825 Router, page 80

Removing the Power Supply Assembly from a Cisco 3825 Router, page 81

Removing the Plug-In Motherboard from a Cisco 3845 Router, page 82

Component Locations on the Motherboard, page 83

SDRAM DIMM Removal and Installation, page 85

AIM Installation and Removal, page 88

PVDM Installation and Removal, page 96

Installing a Power Supply in a Cisco 3825 Router, page 98

Reinstalling the Cover on a Cisco 3825 Router, page 105

Installing or Replacing the Plug-In Motherboard in a Cisco 3845 Router, page 105

Removing and Installing the Fan Tray and Power Supplies in a Cisco 3845 Router, page 106

Before you perform any of these procedures, disconnect the power and remove the cover as described in the “Safety with Electricity” section on page 79.

Safety Warnings

Warning During this procedure, wear grounding wrist straps to avoid ESD damage to the card. Do not directly touch the backplane with your hand or any metal tool, or you could shock yourself. Statement 93

Warning Only trained and qualified personnel should be allowed to install, replace, or service this equipment. Statement 1030

Warning This equipment must be installed and maintained by service personnel as defined by AS/NZS 3260. Incorrectly connecting this equipment to a general-purpose outlet could be hazardous. The telecommunications lines must be disconnected 1) before unplugging the main power connector or 2) while the housing is open, or both. Statement 1043

Warning This unit is intended for installation in restricted access areas. A restricted access area can be accessed only through the use of a special tool, lock and key, or other means of security. Statement 1017

Warning Before working on a system that has an on/off switch, turn OFF the power and unplug the power cord. Statement 1

Warning Do not work on the system or connect or disconnect cables during periods of lightning activity. Statement 1001

Installing and Upgrading Internal Components in Cisco 3800 Series Routers

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Cisco Systems OL-5965-01 warranty OL-5975-04

OL-5965-01 specifications

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