HP 28642A manual Device operation on the SCSIbus

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CAUTION	Only the two endsof a SCSIbusshould be terminated. Excessiveor
	improper termination mayoverload the termination power circuitry on
	the SCSI port. This may result in blowing the TERMPWR fuse on the
	SCSI/parallel adapter, or maydamagetransceivers on any attached
	device (including the adapter). Refer to device manualsfor proper
	device operation on the SCSIbus.

Terminator Resist0

Install External

Termlnator

Figure l-l 1. Install External Terminator on Last Device

Installing the Adapter 1-21

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Contents HP 28642A HP-PB Scsi HP 28655A HP-PB SCSI/ Parallel HP HP 5960-3126 El091Safety Considerations @Hewlett-Packard Company, 1991. AI1rights rcservcdPrint History Installation and S&vice HP 28642A and HP 28655A at a Glance Product Description This Book Table of Contents Page Installing HP 28642A/28655AAdapter Lnstalllng the HP 28642A/28655A Adapter Prepare to Install the Adapter Card Observe Antlstatic PrecautionsVerify Product Contents Gather Tools and Accessories Needed Record Adapter Card Identification InformationDependent requirements that are not noted here Peripheral to 92222ATable l-l. Scsi Cables LengthsDescription meters Remove Data corruption Installing the AdapterShut Down the System and SwZtch Off the Computer CreateCheck the Card’s Hardware Configuration Figure l-4. Default Switch Settings Installing the Adapter Set the Desired Parity-Checking CapabUityScsi Bus = closed = open Installing the Adapter l-9Set the Scsi Bus Address AddressVerify that Resistor Packs are Properly Installed Two resistor packsmust be installedInstall and Connect the Card Select an Appropriate SlotHP-Pa Standard Power Symbol Record the Slot Number Computer hardware limitations for l/O cards, if anySystemperformance implications, if any Prepare the Slot For Use Ignment Hole Page Card guides. If the problem persists,get help Insert the Card into the SlotSupplied with this product provides a thumbscrew connector Attach the Card CablesConnect Your Single-Ended Scsi Devices Installing the Adapter l-19Connect Your Peripheral Devices Properly on the SCSIbusTerminate the Scsi Bus Device operation on the SCSIbus 12. Scsi Bus Example Installing the Adapter Scsi Cable Length ExampleReassemble your computer TurnPowerOn to Peripherals, Then to the ComputerConnect Your Parallel Device, If Applicable Two metersSignal Name 24Installing the AdapterIn/Out Pin25 Turn Power On to Peripherals, Then to the Computer Data corruption or loss,or damageto hardwareSet Up the Operating System HP-UX SystemsMPE XL Systems Verify Operation ServiceInformation Service Information Field Replaceable Units Exchange AssemblyExchange adapter card assembly Flgure 2-1. Location of Board Component FRUsBoard Components Other FRUsTroubleshooting Tools Should be performed by authorized servicepersonnel onlySelf-lestFailure Boot failure occurs Self-Test Failure LEDOperation. Refer to your systemreference manuals Scsipba and Centpba Diagnostics Troubleshooting ChecklistDoes any device require a special SCSIterminator? Removal/Replacement Instructions Removal/Replacement of the Card For card removal, follow the procedures belowAlso be determined from the,scsipbadiagnostic Removal/Replacement of Card ComponentsMinimize touching the connector pins Service Information 2-lDamagewasextensive, you may need a new component Type and ratingDiagnostic Flgure 2-3. Replacing the Termpwr Fuse Service InformationCan continue to operate normally Reshipment Guidelines Technical Specifications General1green IElectrical +5 Vdc IPhysical IEnvironmentalConfiguration GlossaryAmerican National StandardsInstitute Backplane FRU Host adapter Seeadapter HP-PBComplies with the Scsi specification X3.131 Glossary Parallel portPrecision Bus See HP-PB SCSI-2 Termination Index Index tCable Card version...14FRUs...2-3 Identification information...l-4 installingPart number...2-3 Field replaceable units se-eFRUS HP Precision Bus SeeHP-PB HP-PBPhysical specifications...2-16 Index Loopback hood...2-4Resistor pack...&10 PowerProduct contents...13 Self-test failure LED...2-6 shut downTroubleshooting..2-8 Storing adapter cards...l-3 switchDuring installation/removal..J-6,1-19,2-10 Ylrlbo~5960-3126 El091