Cisco 1905 User Manual

Americas Headquarters:
Cisco Systems, Inc., 170 West Tasman Drive, San Jose, CA 95134-1706 USA
Installing and Upgrading Internal Modules and
FRUs in Cisco 1900 Series ISRs
First Published: May, 14, 2010
OL-22230-01
This document describes how to install or upgrade modules that are located internally within your Cisco
1900 series integrated services router, such as internal modules, memory, internal service modules
(ISMs), power supplies, and blowers. You need to remove the cover from the router to install or remove
any of these items. The document contains the following sections:
Note The Cisco 1905 ISR and Cisco 1921 ISR have no user- removable or user-installable components. Do
not remove the chassis cover.
• Safety Warnings, page 2
• Modules Internal to the Cisco 1905 and 1921 Routers, page 4
• Modules Internal to the Cisco 1905 and 1921 Routers, page 4
• Obtaining Documentation and Submitting a Service Request, page 24
Note To see translations of the warnings that appear in this publication, refer to the Regulatory Compliance
and Safety Information for Cisco 1900 Series Integrated Services Routers document that accompanies
your router.

Cisco 1905 Specifications

General

Product Type	Router
Form Factor	Desktop
Connectivity Technology	Wired
Data Link Protocol	Ethernet, Fast Ethernet, Gigabit Ethernet
RAM	256 MB
Flash Memory	256 MB
Weight	2.2 lbs
Firewall	Yes
Wireless	No
Power Supply	External power adapter
USB Ports	1 x USB
Network / Transport Protocol	L2TP, PPPoE, IPSec
Remote Management Protocol	HTTP, HTTPS, SNMP, SSH, Telnet
Features	VPN support, VLAN support, DHCP server, firewall protection, NAT support, Quality of Service (QoS)
Compliant Standards	IEEE 802.1Q

Summary

Safety Warnings

Important Safety Instructions

Provides critical safety guidance and warnings for operating and maintaining Cisco equipment.

Electrical Safety Measures

Covers precautions for power, voltage, grounding, and lightning activity.

Handling and Environmental Precautions

Details safe handling, water proximity, wet locations, and gas leak scenarios.

Component and Disposal Safety

Addresses safety related to specific components like ring generators and proper product disposal.

Modules Internal to Cisco 1905 and 1921 Routers

No User-Serviceable Parts

States that 1905 and 1921 model routers have no user-serviceable or field-replaceable parts.

Service and Support Information

Directs users to 'Obtaining Documentation and Submitting a Service Request' for support issues.

Modules Internal to Cisco 1941 Router

Opening and Closing the Chassis

Provides step-by-step instructions for opening and closing the router chassis.

Locating Internal Modules

Illustrates the locations of key internal modules like ISM, UDIMM, power supply, and blower.

Installing and Removing DRAM UDIMMs

Details the procedure for installing and removing DRAM UDIMM modules, including ESD precautions.

Installing and Removing ISMs

Explains the process for installing and removing Internal Service Modules (ISMs), including software requirements.

Installing and Removing a Power Supply

Guides on how to replace the power supply unit in the router, including PoE installation.

Installing a Blower

Provides instructions for installing or replacing the router's blower unit.

Installing and Replacing CompactFlash Memory Cards

Describes the procedure for installing and replacing CompactFlash memory cards, including ESD damage prevention.

Obtaining Documentation and Submitting a Service Request

Accessing Cisco Documentation and Support

Provides information on obtaining documentation, submitting service requests, and subscribing to updates.