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4-38 Chapter 4: Hardware Service32 kB of CMOS memory is provided on the Active Tree Card for thetraditional retail functionality (totals, logs, tallies, etc.). The CMOSmemory is backed up by a non-rechargeable lithium battery that is userreplaceable. The battery has a minimum 6-year life expectancy.3 V LithiumCMOS BatteryBack Side of the Riser Board17927Note: The Active Tree Card for the 586-processor board only containsthree ISA expansion slots. The bottom-most slot position is used for theparallel port connector.
Chapter 4: Hardware Service 4-39Passive Tree Card (<strong>7453</strong>-4xxx)The Passive Tree Card for the 4xxx provides the following expansionslots:• 2 ISA slots• 1 PCI slot• 1 shared ISA/PCI slotISA SlotsPCI SlotsFront3 V LithiumCMOS BatteryBack17925
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NCR 7453 WorkstationRelease 3.2Hard
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iSafety WarningsPrefaceAudienceThis
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iiiGrounding InstructionsIn the eve
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vTable of ContentsChapter 1: Produc
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viiRemoving the Fan................
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ixRevision RecordIssue DateRemarksA
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xiVoluntary Control Council for Int
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11Chapter 1: Product OverviewIntrod
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2Chapter 2: POST DiagnosticsPower-O
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Chapter 2: POST Diagnostics 2-3Beep
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Chapter 2: POST Diagnostics 2-5Beep
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3Chapter 3: TroubleshootingIntroduc
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Page 116: Index-2PCI LCD boardSVGA, 4-71VGA,
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ncr/doc/Old Models/Technical Manuals/7453_... - Alsys Data

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