Gigabit QAM Modulator Model D9479 Hardware Installation and ...

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Chapter 4 Operating the ModulatorDiagnose the FanIf a fan fails or is failing, either the MAJOR LED or the MINOR LED on the frontpanel will light and you will see either a fan failure alarm message or an excessivetemperature alarm message on the front panel LCD screen, or perhaps both.WARNING:Avoid electric shock and damage to this product! Replace the fan only with agenuine replacement fan from Cisco. Contact your Customer ServiceRepresentative to order replacement fans.Diagnosing the FanThe following illustrations are examples of the alarm displays you will see on thefront panel LCD screen.Fan Failure AlarmNotes: The fan failure alarm is a Major alarm. The fan failure alarm can display for fan number 1 through fan number 6.Excessive Temperature AlarmNotes: The excessive temperature alarm is a Minor alarm. The excessive temperature alarm can display for RF module 1 through RFmodule 4.88 78-745431-01 Rev E
Diagnose the FanReplacing the FanGo to Replace the Fan (on page 90) for detailed procedures on replacing a fan unit.Important: If a fan fails or is failing, contact your Customer Service Representative toobtain a replacement fan.Notes: The part number for the replacement fan unit is 4003088. The part number for the kit that includes the replacement fan and instructionsheet is 4007620-40.78-745431-01 Rev E 89
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78-745431-01 Rev EGigabit QAM Modul
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ContentsAdjust the RF Output Level
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Safety PrecautionsServicingWARNING:
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Safety PrecautionsGrounding Termina
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About This GuideAbout This GuideInt
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1 Chapter 1IntroductionThe GQAM rep
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System OverviewSystem OverviewDiagr
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Chapter 1 IntroductionInput/Output
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Chapter 1 IntroductionItem Componen
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Chapter 1 IntroductionItem Componen
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2 Chapter 2Installing the Dual SFP
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Installation Process SummaryStage P
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Record the MAC AddressRecord the MA
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Considerations When Using Side by S
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Stacking GuidelinesOption 2 - Using
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Install the Modulator Into a RackEn
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Connect Power SourcesConnect Power
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Connect the DVB ASI Input PortsConn
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Connect the 10/100BASE-T Ethernet P
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Connect the Gigabit Ethernet PortsC
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Connect the Gigabit Ethernet PortsN
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Connect the RF OUT PortsConnecting
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