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Seagate ST43402ND Terminator Resistor-Paks part number 70906701 Terminator Power, Source Jumper

Models: ST43402ND ST43401N/ND

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Terminator

36	ST43401N/ND, ST43402ND User’s Manual, Rev. B

Figure 18 shows how the terminator resistor-paks are attached on ST43401ND drives (differential I/O). These terminator resistor-paks, which are dual inline packages, mount in sockets in the control board. These terminators are also marked with a dot above pin 1.

If the drive is located at either end of the daisy chain, ensure that it has resistor-pak(s) installed. Refer to information earlier in this section re- garding the terminator power source jumper.

Terminator

Resistor-Paks

(part number

70906701)

Terminator

Power

Source Jumper

Terminator Resistor-Pak (note orientation)

Terminator

Socket

Pin 1

Figure 18. ST43401ND terminator attachment—differential I/O

Image 46

Seagate ST43402ND, ST43401N/ND user manual Terminator Resistor-Paks part number 70906701 Terminator Power, Source Jumper

Contents

Elite Disc Drive ST43401N/ND ST43402ND User’s ManualMaintenance ContentsInstallation PrefacePreface Electrostatic discharge protectionImportant safety information and precautions ST43401N/ND and ST43402ND User’s Manual, Rev. B Wichtige Sicherheitshinweise ST43401N/ND, ST43402ND User’s Manual, Rev. B viii ST43401N/ND, ST43402ND User’s Manual, Rev. BSeaFONE 408 Technical support servicesSeaFAX USA 408 438-2620 England SeaTDD 408Location Telephonenumber Section 1. General description Figure 1. ST43401N/ND disc drivesST43401N/ND, ST43402ND User’s Manual, Rev. B Figure 2. The ST43402ND disc driveSpecifications Table 1. Drive specificationsCharacteristics Conditionsmsec WriteRead CharacteristicsPage SCSI Figure 3. Drive functional block diagramUnit ControllerVoraussetzungen am Aufstellungsort Section 2. Installation/Abschnitt 2. InstallationSite requirements Environmental requirementsTable 2. Environmental requirements SpecificationsST43401N/ND, ST43402ND User’s Manual, Rev. B ConditionsBedingungen ST43401N/ND, ST43402ND User’s Manual, Rev. BTabelle 2. Umgebungsbedingungen des Laufwerkes Technische DatenAir-flow requirements Note. Air flows in the direction shown or Above unit Under unitAbove unit in reverse direction side to sideSpace requirements Räumliche AnforderungenFigure 5. Mounting orientations Montageorientierungen Up Up Up203.20 mm Figure 6. Dimensions of the drive Laufwerkabmessungen82.55 mm 3.25 in 149.35 mmCurrent without Internal Power requirementsTable 3. Single drive voltage and current requirements Current with InternalST43401N/ND, ST43402ND User’s Manual, Rev. B Interface requirements Grounding requirementsFigure 7. SCSI bus configuration ST43401N/ND, ST43402ND User’s Manual, Rev. B Table 4. Unshielded single-ended I/O cabling P cable Signal nameSignal name Even pinTable 5. Unshielded differential I/O cabling P cable Signal nameSignal name Even pinST43401N/ND, ST43402ND User’s Manual, Rev. B Signal nameSignal name Even pinInspection Unpacking, inspection, and repackingUnpacking RepackingInstallation procedures Setting the control board jumpers= Non-applicable jumper not relevant to the option discussed Sync PinsFigure 8. ST43401N/ND control board jumpers SpindleFigure 9. ST43402ND control board jumpers = Jumper connected = Jumper not connectedFigure 10. ST43402ND I/O board J09 jumpers Used only if the PSS pin jumper is not connected Ground this pin to manually reset the SCSI boardFigure 11. ST43402ND I/O board J10 jumpers SCSI ID = AA & B Terminator Power J01A is forInternal terminator power to I/O Figure 12. ST43402ND I/O board J01 and J03 jumpersSetting the voltage range Installing a power supplyMounting the power supply Attaching an optional bezel Figure 13. Attaching a bezel ST43401N/ND shownMounting the drive Figure 14. Mounting the drive ST43401N/ND shown ST43401N/ND drives Connecting the system I/O cablingFigure 15. ST43401N/ND I/O cable attachment ST43402ND drives Figure 16. ST43402ND I/O cable attachmentResistor-Paks note orientation part number 96752447 Pin Mounting Holes in Control Board Terminator Power Source JumperTerminator TerminatorResistor-Pak Figure 17. ST43401N terminator attachment-single-ended I/OTerminator Resistor-Pak note orientation Terminator Socket Pin Terminator Resistor-Paks part number 70906701 Terminator PowerSource Jumper Figure 18. ST43401ND terminator attachment-differential I/OSynchronizing the spindle Grounding the systemFigure 19. System diagram for spindle sync Figure 20. Making ST43401N/ND spindle sync connections Slave Select Cable from Preceding Unit A B Cable to Next Unit Control BoardFigure 21. Making ST43402ND spindle sync connections ST43401N/ND, ST43402ND User’s Manual, Rev. B Verification Page LED indicators Section 3. OperationST43401N/ND, ST43402ND User’s Manual, Rev. B Figure 22. LEDs on ST43401N/ND drivesFunction LED indicatorTable 6. LED functions for ST43401N/ND drives Socket for Active LED red Heartbeat LED green Ready LED green Control Board Port A Enabled LED green Port B Active LED redPort B Enabled LED green Figure 23. LEDs on ST43402ND drivesFunction LED indicatorTable 7. LED functions for ST43402ND drives This LED is on when port B is actively executing a LED or indicatorOperating instructions This LED is off when port B does not have a SCSISection 4. Parts data Table 8. Options and accessories Part number Description Section 5. Maintenance Observing maintenance precautionsRemoving and replacing a drive Arranging for depot repairPacking a drive for shipment Page 920 Disc Drive, Scotts Valley, CA 95066-4544, USA Seagate Technology, IncPublication Number 83327720, Rev. B, Printed in USA