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4-30 Chapter 4: Hardware Service586 Processor BoardMemory (SIMMs)SIMM1SIMM2SIMM3SIMM4Tree Card ConnectorSW1RS232/1RS232/2LANKeyboardRS232/3LCDLithium BatterySW2ProcessorVGA15216SW1 BlockSwitches, not shunts, are used on the 586 main processor board. Thestrapping for the SW1 block on the board is as follows:ROM Base AddressSwitch positions 1, 2, and 3 are used to set the ROM Base Address forthe Memory Dump ROM.Base Address Switch Pos. 1 Switch Pos. 2 Switch Pos. 3C8000 On On OnCC000 On On Off (Default)D0000 On Off OnD4xxx On Off OffD8000 Off On OnDisable Off Off On
Chapter 4: Hardware Service 4-31Switch position 4 of SW1 enables the VGA when on, and disables theVGA when off.I/O Base Address (SW1)Switch positions 5 and 6 are used to set the I/O base address asfollows:I/O Base Switch Pos. 5 Switch Pos. 60100 On On (Default)0120 Off On0140 On Off0160 Off OffAdding MemoryThe following table shows the configurations of memory that theprocessor board supports.Memory SIMM ConfigurationTotal Size No. of SIMMS SIMM Size Socket(s)4 MB 1 1 MB x 36 (4 MB) SIMM18 MB 2 1 MB x 36 (4 MB) SIMM1, SIMM216 MB 2 2 MB x 36 (8 MB) SIMM1, SIMM232 MB 2 4 MB x 36 (16 MB) SIMM1, SIMM264 MB 4 4 MB x 36 (16 MB) All SIMM
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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
Page 17 and 18: 2Chapter 2: POST DiagnosticsPower-O
Page 19 and 20: Chapter 2: POST Diagnostics 2-3Beep
Page 21 and 22: Chapter 2: POST Diagnostics 2-5Beep
Page 23 and 24: 3Chapter 3: TroubleshootingIntroduc
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Page 27 and 28: Chapter 3: Troubleshooting 3-5Gener
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Page 116: Index-2PCI LCD boardSVGA, 4-71VGA,
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