Seagate ST43402ND, ST43401N/ND user manual J4A

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

To enable the feature, it is necessary to run an additional daisy-chain cable from drive to drive and to make a master/slave selection for each drive. Connector J7 is used by ST43401N/ND drives. Connector J5 on the control board handles the cable connections on ST43402ND drives. Master/slave selection is made by a jumper on connector J4A. Figure 20 shows the two connectors for ST43401N/ND drives, and Figure 21 shows the two connec- tors for ST43402ND drives.

For a drive at the end of the daisy chain, the cable connects to one of the two rows of pins (row A or row B), and a terminator connects to the other row of pins. Both ends of the cable must be terminated.

Pin 1

J7

Cable from

Preceding Unit

A

B

Cable to

Next Unit

Select Plug

Control

Board

J4A

Slave Select

(removed = master)

Figure 20. Making ST43401N/ND spindle sync connections

Image 48

Contents Elite Disc Drive ST43401N/ND ST43402ND Contents Preface Electrostatic discharge protectionImportant safety information and precautions Page Wichtige Sicherheitshinweise Page Page Technical support services SeaFAX USA 408 438-2620 EnglandSeaFONE 408 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 Site requirements Environmental 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 Unpacking, inspection, and repacking UnpackingInspection 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 Installing a power supply Setting the voltage rangeMounting 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 precautionsArranging for depot repair Removing and replacing a drivePacking a drive for shipment