Nortel Networks 241-5101-200 manual Replacing the fan module, Passport 8250 board guidelines

Page 49

Appendix A Replacing hardware 49

Passport 8250 board guidelines

Use caution when handling, storing, and transporting circuit boards. Follow these guidelines:

•Do not stack or store boards without ﬁrst replacing them in their antistatic material and shipping material.

•Do not to damage any parts when inserting the boards into packages.

•Do not store boards in areas where the relative humidity can exceed 85 percent or temperature can exceed 70 C.

•Handle boards by the faceplate. Do not touch electrical connections, pins, and soldered surfaces.

•Do not handle boards unless you are using appropriate antistatic protections such as an antistatic wrist strap. It is recommended that you use conductive carpet, conductive shoes, or heel grounders.

Replacing the fan module

If the fan module malfunctions, contact your Nortel Networks representative to order a new fan module.

WARNING

Rotating fan

Do not touch the fans immediately after removing the fan tray. The fans may continue to rotate several seconds after being removed.

1For each power supply module, turn the power supply breaker to off.

Breaker is off

2Loosen the two securing screws on the fan module.

3Slide the fan tray out of the fan module slot.

Passport 8250 Installation Guide R2.2

Image 49

Contents Installation Page Guide InstallationPage October Publication historyPublication history 241-5101-200 R2.2 Contents Chapter Installing the Passport 8250 device Chapter Preparing for the hardware installationChapter Configuring the Passport 8250 for operations Appendix a Replacing hardware ContentsAppendix B LEDs Appendix C Standards IndexContents 241-5101-200 R2.2 Who should read this guide About this documentWhat you need to know How this guide is organizedDocumentation conventions ConventionsRelated documents Symbol conventionsPassport documents NMS documents Nortel support servicesPassport 8250 functions Chapter PassportPassport 8250 device Passport 8250 hardwarePassport 8250 front panel Board modulesCommunication ports Dual power supply modulesFan module Software compatibility Passport 8250 softwarePassport 241-5101-200 R2.2 Selecting an installation site Chapter Preparing for the hardware installationTaking inventory of the Passport 8250 shipment Unpacking the Passport 8250 shipmentRisk damage to the equipment Inventory checklist Options available Code # Getting the tools to mount the chassis in a rack Safety precautions Chapter Installing the Passport 8250 deviceMounting the chassis in a rack Ventilation space Mounting the Passport 8250 device on a 19 rackAttaching mounting brackets to chassis Installing the chassis on a 19 rackMounting the Passport 8250 device on a Nebs or Etsi rack Installing the chassis on a Etsi or NEBs rackConnecting the DS-1/E1 ports Connecting cables to the portsDS-1 / E1 port connections DS-1/E1 pin assignment Description Signal Pin Connecting the ethernet port Connecting the serial port Connecting the ATM uplink port Connecting the dual power supplyAntistatic protection Dual power supplySecuring the cables to the rack Cables left of chassis Cables underneath chassis Logging into the CLI Chapter Conﬁguring the Passport 8250 for operationsStarting the Passport 8250 device and logging into the CLI Breaker is off. Turn to on Conﬁguring the Passport 8250 device for remote accessSetting the boot parameters Viewing the boot parametersBoot command parameters Boot parameter Description Conﬁguring the clocking scheme Clockconﬁg command parameters Parameter Values Definition Example Setting the clocking scheme to External PrimaryE1-1clockconfig set Setting the clocking scheme to ExternalSecondarySetting the reference clock to internal Field-replaceable modules Appendix a Replacing hardware Removing a power supply module Replacing a power supply moduleReplacing a board module Board slots Passport 8250 board guidelines Replacing the fan moduleRotating fan Conﬁrm that the fan LED is off 241-5101-200 R2.2 Appendix B LEDs Passport 8250 Leds Service boards Network board Fan module Power supplyLEDs description Color Description Appendix B LEDs 241-5101-200 R2.2 Appendix C Standards Product safety standardsElectromagnetic compatibility standards Telecom standards Thermal, mechanical, and power standardsRegulatory information standards Industry Canada Notice Equipment attachment limitation Federal Communications Commission FCCAppendix C Standards Index Index 241-5101-200 R2.2 Page Installation