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Juniper Networks G10 CMTS manual Front Fan Tray Replacement

Models: G10 CMTS

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Fan Trays

•Figure 45: Front Fan Tray Replacement

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•	Retainer		Fan Tray
•	Plunger		Fan Tray
•	Plunger		Rail
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•	Front Fan
•	Front Fan
•	Tray Retainer
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•	Front Fan	Fan Tray	Midplane
•	Front Fan	Rail	Power
•	Tray		Connector
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164 JUNOSg 3.0 G10 CMTS Hardware Guide

Image 180

Juniper Networks G10 CMTS manual Front Fan Tray Replacement

Contents

Release G10 Cmts Hardware Guide Table of Contents Chapter Initial Installation Part Appendixes Index Viii JUNOSg 3.0 G10 Cmts Hardware Guide List of Figures List of Figures Front Fan Tray Replacement 164 List of Figures List of Tables List of Tables List of Tables Objectives Audience Document OrganizationAudience Documentation Conventions Documentation Conventions Contact Juniper Networks Documentation FeedbackContact Juniper Networks Part JUNOSg 3.0 G10 Cmts Hardware Guide System Overview System Description System Description Typical Cmts Location Headend Architecture Field-Replaceable Units FRUs Field-Replaceable Units FRUs G10 Cmts Features and Functions G10 Cmts Features and FunctionsFunctional Overview Broadband Cable Processor Asic G10 Cmts Components G10 Cmts Components G10 Cmts G10 Cmts Management G10 Cmts Hardware OverviewG10 Cmts Management Front View of Fully Configured Chassis G10 Cmts Hardware Overview Front View of Partially Configured Chassis Rear View of Fully Configured Chassis Air Management Panel Rear JUNOSg 3.0 G10 Cmts Hardware Guide G10 Cmts Hardware Overview G10 Cmts Hardware Overview Hardware Component Overview Chassis Physical Characteristics Chassis Physical SpecificationsSpecification Value Chassis Chassis Environmental Specifications Card Cage and Midplane SpecificationsCard Cage and Midplane Signals carried by the connectors are described in Table Midplane P1 P5 Connectors Front View Distribution panels are also separated into domains a and B Chassis Versions Midplane Domains Power Supplies Power Supply LEDs Cmts Power Transition Modules Cooling and Fans Docsis Module Docsis Module Front Panel Functional Characteristics Data Packet Processing Higher Layer Functions MAC Layer Functions Modem Management Physical and Electrical Characteristics Docsis Module Physical DimensionsDocsis Module Operational Characteristics Docsis Module LEDs Chassis Control Module Chassis Control Module Through the Chassis Control Module Chassis Control Module Front Panel Configuration, State, and Alarm Data Chassis Control Module Physical Dimensions Chassis Control Module ConnectorsChassis Control Module Switches Chassis Control Module LEDs NIC Module NIC Module NIC Module Front Panel NIC Module Physical Dimensions NIC Module Connectors Single-Mode, Long-Range Gbic Specifications Single-Mode, Midrange Gbic SpecificationsParameter Value Multimode Gbic Specifications 1000BT Gbic Specifications NIC Module LEDs Color Function NIC Access Module NIC Access Module LEDsChassis Rear Modules Chassis Rear Modules NIC Access Module Front Panel HFC Connector Module HFC Connector Module Fast Ethernet LEDs HFC Connector Module Rear Panel G10 Cmts Data Flow Switched I/O Module SIM Fast Ethernet Port LEDs SIM Rear Panel Hard Disk Module Hard Disk Module Rear Panel System Architecture Overview JUNOSg Internet Software Overview Routing Engine Software Components JUNOSg Internet Software Overview Routing and Forwarding Tables Interface Process Tools for Accessing and Controlling the Software Software Installation and Upgrade ProceduresSoftware Monitoring Tools Data Path Processing Downstream Data PathData Path Processing Upstream Data Path G10 Cmts Data Flow Part JUNOSg 3.0 G10 Cmts Hardware Guide Prepare the Site Safety Precautions Safety Precautions Safety Precautions JUNOSg 3.0 G10 Cmts Hardware Guide Power AC PowerPower DC Power G10 Cmts Environmental SpecificationsEnvironment Environment Mounting Mounting Tools and Equipment Required for Installation Tools and Equipment Required for Installation Characterization of Installation Site Coaxial Cable RequirementsCoaxial Cable Requirements Coaxial Cable Requirements Characterization of Installation Site RF Plant/HFC Environment Characterization Existing Docsis Service Characterization Upstream Cmts Parameter Characterization Upstream Parameters Port Characterization of Installation Site Downstream Cmts Parameter Characterization Downstream Parameters Port Upstream Frequency Spectrum Utilization Frequency Description of Utilization Summary Checklist Summary Checklist Average Noise Spectrum Analyzer Settings Setting ValueNoise Measurement Methodology Average Upstream Noise Measurement Peak Noise Spectrum Analyzer Setup Average Upstream Noise Measurement Example Additional Characterization Tables Additional Characterization Tables Docsis Service Upstream Cmts Parameter Characterization Additional Characterization Tables Verification of Shipping Cartons Verification of Shipping Cartons G10 Cmts Installation Checklist G10 Cmts Installation Checklist Step Number Completion Status Connect to Power Sources Install the Cmts Ground the Chassis Ground the Chassis Rack Mounting Air Flow Through Chassis 17.3 in 439.4 mm 18.6 in 472.6 mm Front Lifting the Chassis Rack-Mounted Chassis 100 Rack Fully Populated with Three G10 Cmts Chassis Install Power Supplies Install Power Supplies101 Power Supply Installation 102 Install a Docsis Module Install a Docsis Module 104 Air Management Module Removal Install an HFC Connector Module or SIM Install an HFC Connector Module or SIM 106 HFC Connector Module Installation 107 Install a Chassis Control Module Install a Hard Disk ModuleInstall a NIC Access Module Install a Chassis Control Module Cable an HFC Connector Module or SIM Cable an HFC Connector Module or SIM 110 On page 54 for port labeling 111 112 Rear Coaxial Cable Connections 113 Cable a Chassis Control Module 114 Cable a NIC Module Cable a NIC Access Module Cable a NIC Access Module115 116 NIC Access Module Cable Connections 117 NIC Access Module Wiring Plan NIC Access Module in Slot118 Connect to Power Sources Attach a PC to the Chassis Control Module119 Attach a PC to the Chassis Control Module Connect to Power Sources AC Power Cord and Retainer Clip Terminal block. The guard will be reinstalled in step DC Power Transition Module Connect the Power and Perform Initial Configuration Power On the G10 Cmts123 Power On the G10 Cmts Power Fault 125 Docsis Module LED StatusStatus Meaning Chassis Control Module LED Status NIC Module LED Status Power On and Configure the PC Power On and Configure the PCNIC Access Module LED Status 127 Perform Initial Software Configuration Perform Initial Software Configuration 129 Root@host-name#commit Troubleshooting and Maintenance 131 JUNOSg 3.0 G10 Cmts Hardware Guide RF Measurements Downstream RF Measurement in Catv Mode Downstream RF Measurement in Catv Mode Downstream RF Measurement in Spectrum Analyzer Mode Downstream RF Measurement in Spectrum Analyzer ModeRf-power rf-power Cable-options downstream hierarchy level Press the Span key and enter 6 MHz Upstream RF Measurement Upstream RF MeasurementCable-options upstream Preamble Multiple Upstream Bursts Upstream RF Measurement Troubleshooting Features for Troubleshooting Features for Troubleshooting Cable modem flaps commandFlap List Flap List Association to Potential Issues Output Field Value Potential Issues To establish an operational baseline Local Event Log Local Event Log Headings DisplayedUser@host show log cable Output Field Object Meaning Operational Commands PBC-CMTS-MIB MIB ServiceGuard Management System Cmts Power and Booting Issues Cmts Is Not Powering UpCmts Power and Booting Issues Cmts Powers Down Ideal HFC Plant Configuration Issues Ideal HFC Plant Configuration IssuesCable Modem Cannot Successfully Range Cable Modem Cannot Establish IP Connectivity Cable Modem Cannot Successfully Register Cable Modem Throughput is Slow User@host show cable modemUser@host show cable qos-profile Ideal HFC Plant Configuration Issues User@host show cable modem summary total interface Ideal HFC Plant Configuration Issues HFC Plant Related Issues HFC Plant Related IssuesCable Modem is Dropped Cable Modem Cannot Successfully Range CMTS, which reduces the cable modem throughput Replacement Procedures Remove Power Supplies Power Supplies Power Supply Removal Fan Trays Replace a Fan TrayFan Trays Front Fan Trays Front Fan Tray Replacement Rear Fan Tray Replacement Module Removal Remove a Docsis ModuleModule Removal Docsis Module Removal Remove an HFC Connector Module or SIM Remove a Chassis Control Module User@host request system halt Remove a NIC Access Module Remove a Hard Disk ModuleRemove a NIC Module 170 171 JUNOSg 3.0 G10 Cmts Hardware Guide Safety Agency Certifications Immunity Agency Certifications Radio Frequency RF Specifications 175 Radio Frequency RF Specifications Downstream RF Channel Transmission Characteristics Upstream RF Channel Transmission Characteristics 177 Downstream RF Signal Output Characteristics Docsis Downstream Channel Rates and Spacing Symbol Rate Channel Width Bit-rate/sec Ksym/sec KHz1 179Docsis Maximum Upstream Channel Rates and Widths 16QAM Radio Frequency RF Specifications EIA Channel Plans EIA Channel PlanChannel EIA Channel Plans AAA EIA Channel Plans STD IRC HRC EIA Channel Plans 187 JUNOSg 3.0 G10 Cmts Hardware Guide Index Index Docsis LED 10, 16, 68, 89, 124, 149 Index Index