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Elite 23 Installation Guide, Rev. A

35

N drives

Terminating the drive

ST423451N drives are terminated with permanently mounted IC
active terminators. If you install one of these drives and it is not
on the end of the SCSI bus, disable the terminators by removing
the TE jumper from pins 19 and 20 of connector J4A (see Figure
7). If you install the drive on the end of the SCSI bus, enable ter-
mination by installing a jumper on pins 19 and 20 of connector
J4A.

Figure 8.

Terminating the drive

Terminator Enabled (TE)

Terminator Disabled (TE)

Pin 19

J01

J4B

J4A

J4A

Pin 1

Pin 1

Pin 1

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Содержание ELITE 23

Страница 1: ...Elite 23 Disc Drive ST423451N W WD Installation Guide...

Страница 2: ...s section 38 All drives 42 1996 Seagate Technology Inc All rights reserved Publication Number 83329130 Rev A September 1996 Seagate Seagate Technology and the Seagate logo are regis tered trademarks o...

Страница 3: ...s used within the drive circuitry Although some devices such as metal oxide semiconductors are extremely sensitive all semiconductors as well as some resistors and capacitors may be damaged or degrade...

Страница 4: ...arefully read and followed to minimize or eliminate the risk of personal injury The warnings point out conditions or practices that may endanger you or oth ers The cautions point out conditions or pra...

Страница 5: ...0950 CSA C22 2 950 M89 and VDE0805 Seagate takes all reasonable steps to ensure that its products are certifiable to currently accepted standards Typical applica tions of these disc drives include cus...

Страница 6: ...ganz zu vermeiden Die Warnhinweise machen auf Situationen oder Praktiken aufmerksam die Sie oder andere gef hrden k nnten Die Vorsichtshinweise machen auf Situationen oder Praktiken aufmerksam die Ein...

Страница 7: ...achten Sie besonders auf den oberen Stapelbereich da dort die Temperatur gew hnlich am h chsten ist Befolgen Sie die oben unter Electrostatic Discharge Protec tion angegebenen Sicherheitsma nahmen Ne...

Страница 8: ...en Zulasssung im Endprodukt Designer von Untersystemen sind daf r verantwortlich die Voraussetzungen f r die Einhaltung sicherheits oder aufsichtsbeh rdlicher Vorschriften in ihren Endprodukten und fa...

Страница 9: ...system for typical applications The selected system represents the most popular characteristics for test platforms The system configurations include 486 Pentium and PowerPC Microprocessors 3 5 inch F...

Страница 10: ...isc drives and tape drives This service is available 24 hours daily and requires a touchtone phone If you need to speak to a technical support engineer use this number to determine the correct access...

Страница 11: ...ogy Forum on CompuServe Online technical support for Seagate products is available on CompuServe To access our technical support forum type go seagate This forum provides information similar to that f...

Страница 12: ...technical support spe cialists 24 hours daily Responses are sent during business hours Location Telephone number United States 1 800 SEAGATE or 408 456 4496 England 44 1628 894084 Australia 61 2 9756...

Страница 13: ...munications device for the deaf TDD you can send questions or comments 24 hours daily and exchange mes sages with a technical support specialist between 6 00 A M and 5 00 P M Pacific time Monday throu...

Страница 14: ...ften a rack within the system or an external enclosure designed to house one or more disc drives or other peripheral units In either case the disc drive must receive adequate cooling refer to Providin...

Страница 15: ...erage write 14 2 msec Disc rotation r min 5 400 0 5 Average latency 5 55 msec Internal transfer rate 85 9 to 123 Mbits sec variable with zone Max sync SCSI transfer rate N 20 Mbytes sec W WD 40 Mbytes...

Страница 16: ...e host initiator 3 See the 12V current profile in the Elite 23 Product Manual publication number 83329140 4 This condition occurs when the Motor Start option is enabled and the drive has not yet recei...

Страница 17: ...t shown 8 Use separate ground returns for 5V and 12V supplies 9 Where power is provided to multiple drives from a common supply carefully consider individual drive power requirements Where multiple un...

Страница 18: ...additional information about configuring and installing your particular model Drive models Page ST423451N 34 ST423451W ST423451WD 38 All drives LED indicator connections 42 General information The fol...

Страница 19: ...ails about its requirements for proper SCSI device installation Note This drive is a SCAM SCSI Configured Auto Magically compliant drive If the system into which you are installing this drive requires...

Страница 20: ...top example in Figure 2 shows an internal hard disc at one end of the SCSI bus with the SCSI controller at the other end both are terminated The bottom example shows two additional SCSI devices connec...

Страница 21: ...ecific section I O circuits and data path widths WD models use differential I O circuits You cannot mix these models with single ended models N W on the same SCSI bus The circuits are incompatible wit...

Страница 22: ...differential I O circuits a maximum cable length of 25 meters 82 feet is allowed A maximum of 8 devices can be connected on an 8 bit wide data bus and a maximum of 16 devices can be connected on a 16...

Страница 23: ...Elite 23 Installation Guide Rev A 21 Figure 3a Fifty pin I O connection to drive Figure 3b Sixty eight pin connection to drive...

Страница 24: ...nection to host adapter Host Adapter PCB Pin 1 check your adapter for Pin 1 location N Model Drive SCSI ID 1 SCSI ID X or last drive X means up to ID6 or the maximum allowable number of devices on the...

Страница 25: ...check your adapter for Pin 1 location W Model Drive WD Model Drive SCSI ID 1 SCSI ID X or last drive X means up to ID15 or the maximum allowable number of devices on the SCSI bus See Table 1 Terminat...

Страница 26: ...g the drive or directing the air flow in a way that creates the least amount of air flow resistance while providing air flow above the circuit boards and around the head and disc assembly HDA Also cho...

Страница 27: ...ren oder den Luft strom so zu lenken da der geringste Luftstromwiderstand erzeugt wird und gleichzeitig ein Luftstrom ber den Platinen und um die Kopf und Festplatteneinheit HDA gegeben ist W hlen Sie...

Страница 28: ...t Unter der Einheit Note Air flows in the direction shown back to front or in reverse direction front to back Hinweis Luftstrom in der angezeigten Richtung von vorne nach hinten oder in umgekehrter Ri...

Страница 29: ...e HDA The maximum length that the screws should extend into the HDA mounting holes is 0 17 inch 4 318 mm measured from the outer surface of the HDA Tighten the screws down evenly Do not over tighten o...

Страница 30: ...er ausgerichtet In diesem Fall die Schraube nicht in das Gewindeloch forcieren sondern die Schraube herausnehmen und erneut in das Gewindeloch einf hren 2 Verify that all connections between the drive...

Страница 31: ...ung des Systems nicht behindern Das Laufwerk wird ber einen 4 poligen neben dem SCSI Anschlu befestigten Steckverbinder mit Gleichstrom ver sorgt Der Ausgang eines Netzteils mu SELV safety extra low v...

Страница 32: ...system This may increase radiated emissions and is the system designer s responsibility Hinweis Die Signalerde auf der Stromregelungskarte PCB und der Kopf und Festplatteneinheit HDA sind in diesem L...

Страница 33: ...Installation Guide Rev A 31 elektromagnetische Strahlung f llt in den Zust ndigkeits bereich des Systemdesigners 5 Replace the host system s cover 5 Setzen Sie das Geh useoberteil des Host Systems wi...

Страница 34: ...3 79 25 21 84 139 70 2 17 79 24 74 93 82 30 A B C D E F G H J K L 0 010 0 010 0 010 0 020 0 010 0 005 0 010 0 010 0 010 0 020 0 020 25 25 25 50 25 13 25 25 25 50 50 Mounting holes two on each side 6 3...

Страница 35: ...Format the disc drive Elite 23 disc drives are designed to operate with a variety of operating systems Please refer to your system or SCSI controller manual for information about formatting and settin...

Страница 36: ...ector to set the SCSI ID see Figure 7 on model ST423451N To change the SCSI ID install jumpers on the appropriate pins as shown in the illustration Figure 7 Setting the SCSI ID on N models SCSI ID 0 d...

Страница 37: ...it is not on the end of the SCSI bus disable the terminators by removing the TE jumper from pins 19 and 20 of connector J4A see Figure 7 If you install the drive on the end of the SCSI bus enable ter...

Страница 38: ...ally need to change this option and can leave the drive configured as it was shipped from the factory Figure 9 Setting terminator power jumpers on N models Terminator Power Option TP Internal terminat...

Страница 39: ...is disconnected Spinup delay equal to the SCSI Bus ID multiplied by 12 seconds if the Start Command option jumper is disconnected Spinup Delay Option DS Pin 1 J4B Start spindle according to the Spinu...

Страница 40: ...I ID install jumpers on the appropriate pins as shown in the illustration Figure 11 Setting the SCSI ID on W WD models SCSI ID 0 default J4A SCSI ID 1 SCSI ID 2 SCSI ID 3 SCSI ID 4 SCSI ID 5 SCSI ID 6...

Страница 41: ...n the end of the SCSI bus enable termination by installing a jumper on pins 19 and 20 of connector J4A see Figure 12 Note Use active ANSI SCSI 2 Alternative 2 terminators when terminating the bus ST42...

Страница 42: ...e the drive configured as it was shipped from the factory There are two possible terminator power configurations for ST423451WD drives see Figure 13 Figure 13 Setting terminator power jumpers on W mod...

Страница 43: ...connected Spinup delay equal to the SCSI Bus ID multiplied by 12 seconds if the Start Command option jumper is disconnected Spinup Delay Option DS J4B Start spindle according to the Spinup Delay optio...

Страница 44: ...below Figure 15 LED indicator connections for all drive models J4A Reserved Active LED Connector Fault Ready LED Connector Terminator Enabled TE Active Fault Ready Reserved Note On some LEDs the flat...

Страница 45: ......

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Страница 48: ...Seagate Technology Inc 920 Disc Drive Scotts Valley CA 95066 4544 USA Publication Number 83329130 Rev A Printed in USA...

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