Cisco Systems 3800 Series instruction

Power Connections

Note When source A and source B are wired with common negative terminals, as in Figure 17, discharging does not occur and there is no requirement that source A and source B voltages be equal.

Figure 18 Connecting Source A and Source B with Common Positive Terminals

	Va voltage = Vb voltage (greater than 0.25 V)
Va voltage = Vb voltage (within 0.25 V)
A-	A-
Va	Va
+	+
A+	A+

B+	B+
+	+
Vb	Vb
B-	B-	127040
		127040

In Figure 19, source A and source B are wired with opposite polarity grounds. Do not use this configuration.

Caution Do not use the DC input configuration shown in Figure 19.

Connecting Cables to Cisco 3800 Series Routers

26	OL-5970-02

Image 56

Cisco Systems 3800 Series warranty Va voltage = Vb voltage greater than 0.25

Contents

Objectives and Organization Convention Description AudienceConventions Safety Warnings Bewaar Deze Instructies Aviso Instruções Importantes DE Segurança Warnung Wichtige SicherheitshinweiseAvvertenza Importanti Istruzioni Sulla Sicurezza Guarde Estas Instrucciones GEM Disse Anvisninger Page Safety Warnings Introduction to Hardware Documentation Related Documentation Cisco Product Document Replacement, Repair, or Refund Policy for Hardware Cisco 90-Day Limited Hardware Warranty TermsDuration of Hardware Warranty To Receive a Return Materials Authorization RMA Number Obtaining DocumentationCisco.com Ordering Documentation Submitting a Service Request Documentation FeedbackObtaining Technical Assistance Cisco Technical Support Website Definitions of Service Request Severity Obtaining Additional Publications and Information Copyright 2004 Cisco Systems, Inc. All rights reserved Overview of Cisco 3800 Series Routers Router Descriptions Front View of Cisco 3825 Router Rear Panel of Cisco 3825 Router Front Panel of Cisco 3845 Router Product Identification Product Identification Built-In Ports Cisco Product Identification Tool Module and Interface Card Capacity Network Modules Interface Cards Port Numbering Aims and PVDMsBuilt-In Ports Network Module Ports Interface Card Ports Asynchronous Interface Numbering Memory PowerRouter Power Option Input IP Phone Power Output LED Indicators Real-Time Clock and BatteryTechnical Specifications Specification Value Information, see the Cisco 2800 Series and Cisco Information, see the Cisco 2800 Series and Cisco Regulatory Compliance Regulatory Compliance Overview of Cisco 3800 Series Routers Safety Recommendations Statement Safety with Electricity Preventing Electrostatic Discharge Damage Power Supply ConsiderationsGeneral Site Requirements Site Environment Site Configuration Equipment Racks Installation Checklist Task Verified by Date Creating a Site Log Inspecting the Router OL-5967-01 Installing Cisco 3800 Series Routers in an Equipment Rack Rack-Mounting the Router Bracket pair for 19-inch rack Attaching Brackets to the Router for Rack Mounting Rack-Mounting Brackets for Cisco 3845 Routers Bracket Installation for Front Mounting Installing the Router in a Rack Right bracket For 19-inch rack Use six screws on each side Grounding the Router Attaching the Optional Cable Management Bracket Ground lug attachment Ring Terminal Ground Connection on Cisco 3825 Router Ring Terminal Ground Connection on Cisco 3845 Router OL-5969-01 Power Connections Connecting Cables to Cisco 3800 Series Routers Connecting Routers to AC Power Connecting Routers to DC Power120 VAC, 45 a 240 VAC, 30 A. Statement 120 VAC, 30 a 240 VAC, 20 A. Statement DC Input1 Safety Ground Overcurrent Wire Size Wire Terminal Lug Protection60 VDC, 20 A. Statement 60 VDC, 30 A. Statement DC Input Wiring Procedure + + B Dual DC Power Supply Configuration in Cisco 3825 Routers Connecting to One Source Only-Source a or Source B Va voltage = Vb voltage greater than 0.25 Connecting Routers to Backup Power Source a and Source B Wired with Opposite-Polarity Grounds Connecting WAN, LAN, and Voice Cables RPS Connector on Cisco 3825 Router Connecting a Console or Modem Connecting a Console to the Console Port Connecting a Computer to the Cisco 3825 Router Console Port Connecting a Modem to the Auxiliary Port Connecting a Computer to the Cisco 3845 Router Console Port Modem Powering Up Cisco 3800 Series Routers Prerequisites Power-Up Procedure Verifying LED Indications Color and State Meaning SYS Verifying the Hardware Configuration Setting the Date and Time Troubleshooting Cisco 3800 Series Routers Solving Problems Troubleshooting the Power and Cooling Systems Environmental Reporting Features Troubleshooting Modules, Cables, and Connections LEDs Cisco 3825 Front-Panel LEDs Cisco 3825 Rear-Panel LEDs LED 3825 3845 AIM0 Show environment Command PS1 Error Messages Cisco 3800 Series Routers Cisco 3845 Router Error Messages Jumper Settings More Troubleshooting Help Recovering a Lost Password OL-5972-01 Installing Network Modules Cisco 3800 Series Routers Installing Network Modules Installing Network Modules Modifying the Width of Network Module Slots Slot divider Slot adapters Installing and Removing Slot Dividers Slot Adapters for Double-Wide Network Modules Generic Router Installing Slot Dividers Slot Divider for Network Module Slot 121385 Removing Slot Dividers Installing and Removing Slot Adapters Installing Slot Adapters Installing Blank Faceplates Removing Slot Adapters Installing Interface Cards in Cisco 3800 Series Routers Installing Interface Cards Installing Slot Dividers in Hwic Slots Slot Divider for Cisco 3825 Hwic Slot Slot Divider for Cisco 3845 Hwic Slot Inserting Slot Divider into Hwic Slot Cisco 3825 Router Slot divider Screw tab Screw hole Track Removing Slot Dividers from Hwic Slots Pull the slot divider straight out of the Hwic slot Installing Blank Faceplates over Empty Hwic Slots Show a blank faceplate for an interface card slot Installing Blank Faceplates over Empty Hwic Slots Cisco Part Number SFP Transceiver Micrometer Mode Distance Maximum Installing SFP Modules Laser Safety Guidelines Disconnecting SFP Latch Mechanisms Removing SFP Modules OL-5968-01 Preventing Electrostatic Discharge Damage Removing CompactFlash Memory Cards Compact Installing CompactFlash Memory Cards CompactFlash Slot Location in Cisco 3845 Router Using the Compact Flash Guard Copyright 2004-2005 Cisco Systems, Inc. All rights reserved OL-5975-04 Safety with Electricity Removing the Cover from a Cisco 3825 Router Removing the Power Supply Assembly from a Cisco 3825 Router Removing the Plug-In Motherboard from a Cisco 3845 Router Component Locations on the Motherboard Removing the Motherboard from a Cisco 3845 Router PVDM3 Memory PVDM2 PVDM1 Sdram Dimm Removal and Installation Component Locations on a Cisco 3845 Motherboard Dimm Location and Orientation Removing an Sdram Dimm Installing an Sdram Dimm Cisco 3845 Router procedure on AIM Installation and Removal Accessory KitsInstalling an AIM Overview Connecting the AIM to the Motherboard Removing Screws from a Motherboard for AIM Installation Metal Standoffs Attaching an AIM to a Motherboard AIM Installed on a Motherboard Verifying AIM Installation Applying the AIM Label Removing an AIM Removing Screws from an AIM Installing a CompactFlash Memory Card on the AIM CompactFlash Memory Card Location on the AIM Pvdm Installation and Removal Pvdm Location and Orientation Installing a Pvdm Tilt Pvdm up to vertical Clips snap into place Installing a Power Supply in a Cisco 3825 Router Removing a Pvdm Removing the Existing Power Supply Installing an AC Power Supply 100 Installing a DC Power Supply 101 102 Installing an IP Phone Power Supply 103 104 Reinstalling the Cover on a Cisco 3825 Router 105 106 107 108