Seagate ST43402ND, ST43401N/ND user manual ST43401ND terminator attachment-differential I/O

Page 46

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

Contents Elite Disc Drive ST43401N/ND ST43402ND Contents Preface Electrostatic discharge protectionImportant safety information and precautions Page Wichtige Sicherheitshinweise Page Page SeaFONE 408 Technical support servicesSeaFAX USA 408 438-2620 England SeaTDD 408Telephone Location NumberGeneral description ST43402ND disc drive ST43401N/ND, ST43402ND User’s Manual, Rev. B Characteristics Conditions Specifications Write Read MsecPage Drive functional block diagram Environmental requirements Site requirementsUmgebungsbedingungen Environmental requirements Conditions Specifications ST43401N/ND, ST43402ND User’s Manual, Rev. B Air-flow requirements Suggested air flow/Empfohlener Luftstromverlauf Space requirements Räumliche AnforderungenMounting orientations Montageorientierungen Dimensions of the drive Laufwerkabmessungen Power requirements ST43401N/ND, ST43402ND User’s Manual, Rev. B Grounding requirements Interface requirementsST43401N/ND, ST43402ND User’s Manual, Rev. B Ground Ground Diffsens Termpwr Reserved ATN BSY ACK RST MSG SEL REQ Even pin Odd pin Signal name Numbers Inspection Unpacking, inspection, and repackingUnpacking RepackingInstallation procedures Setting the control board jumpersJ4B J4A ST43402ND I/O board J09 jumpers ST43402ND I/O board J10 jumpers ST43402ND I/O board J01 and J03 jumpers Setting the voltage range Installing a power supplyMounting the power supply Attaching an optional bezel Attaching a bezel ST43401N/ND shownMounting the drive Mounting the drive ST43401N/ND shown Connecting the system I/O cabling ST43401N/ND drivesST43402ND drives ST43402ND I/O cable attachmentST43401N terminator attachment-single-ended I/O ST43401ND terminator attachment-differential I/O Grounding the system Synchronizing the spindleJ4A J4A ST43401N/ND, ST43402ND User’s Manual, Rev. B Verification Page LED indicators OperationLEDs on ST43401N/ND drives LED indicator Function LEDs on ST43402ND drives When it is off, the drive does not have a Scsi LED or indicator Function Operating instructionsParts data Options and accessories Part Number Description Maintenance Observing maintenance precautionsRemoving and replacing a drive Arranging for depot repairPacking a drive for shipment