Page 2 - ii; Contents
ii Contents Preface .................................................................................................... iii Electrostatic discharge protection ........................................................ iii Important safety information and precautions .....................................
Page 3 - iii; Preface; Electrostatic discharge protection; will damage components and may void the warranty.
ST43400N/ND User’s Manual iii Preface This manual contains information for users of the Seagate ST43400N andST43400ND Elite disc drives employing the SCSI interface. It provides instal-lation, operation, and maintenance information. This manual also lists the partnumbers for options and accessories ...
Page 4 - iv; Important safety information and precautions
iv Important safety information and precautions Caution. Use forced-air ventilation when bench-testing the drive to ensure proper cooling of drive components. Use proper safety and repair techniques for safe, reliable operation of this unit.Service should be done only by qualified persons. We recomm...
Page 6 - Technical support services; Location
vi Technical support services Seagate Technology provides technical support literature and diagnostic utili-ties to authorized distributors. Please contact your dealer for technical supportand installation troubleshooting. Product technical support is available for allSeagate products by calling the...
Page 7 - Section 1. General description
Section 1. General description The Seagate ST43400N/ND Elite 3 disc drives are high speed, random accessdigital data storage devices. They communicate with an initiator using the SmallComputer System Interface (SCSI). The drive is shown in Figure 1, and itsspecifications are listed in Table 1 on the...
Page 11 - General description; Figure 2. Drive functional block diagram
General description 5 Initiator Unit Selection Logic Read/Write Logic Head Selection Logic Seek Logic Track Orientation Logic Error Detection Logic I/0 Lines SCSI Controller Power Supply Discs Heads Data recorded in concentric tracks Figure 2. Drive functional block diagram After arriving at the dat...
Page 12 - Section 2. Installation; Site requirements; Environmental requirements; Table 2. Drive environmental requirements
Section 2. Installation The information contained in this section describes installation and initialcheckout of the drive. Site requirements The site requirements considered are environment, airflow, space, power,grounding, and interface. Environmental requirements All environmental requirements for...
Page 13 - Airflow requirements
8 Airflow requirements The enclosure design must ensure adequate cooling for the drive. Note that thefan in the power supply cools only the power supply’s internal parts. The drive’s product specification (document 64403601) describes how toevaluate the airflow design. The evaluation consists of ens...
Page 14 - Installation; Figure 3. Suggested airflow
Installation 9 Above unit Under unit Note. Air flow in the direction shown (front to back) or in reverse direction (back to front) Above unit Under unit Note. Air flow in the direction shown or in reverse direction (side to side) Figure 3. Suggested airflow
Page 15 - Figure 4. Mounting orientations; Space requirements
10 Figure 4. Mounting orientations Space requirements The drive is designed to be mounted in one of the three orientations shownin Figure 4. The drive may be mounted on its base or on either side. Mountingorientations other than those shown are not permitted. The physical dimen-sions of the drive an...
Page 16 - Figure 5. Dimensions of the drive and power supply
Installation 11 83 mm3.25 in 204.72 mm 8.06 in max 70 mm2.75 in 141 mm 5.57 in 147 mm 5.75 in Drive Power Supply 202 mm 8.00 in Figure 5. Dimensions of the drive and power supply
Page 17 - Power requirements
12 Power requirements The voltage and current requirements for a single drive at cylinder 0 are shownin Table 3. Table 3. Single drive voltage and current requirements Current without Internal Current with Internal Terminator Terminator Seeking Contin- Seeking Contin- and uous and uous Voltage Idle ...
Page 18 - Grounding requirements
Installation 13 AC power requirements for the optional Seagate power supply are listed inTable 4 below. Conversion to the different line voltages is explained in theinstallation procedures. Table 4. Power supply AC power requirements Nominal Values Specifications 100–120 VAC 208–240 VAC Voltage rang...
Page 19 - Figure 6. SCSI bus configuration
14 SCSI Device 0 SCSI Device 1 SCSI Device 2 SCSI Device 3 Term SCSI Device 7 SCSI Device 6 SCSI Device 5 SCSI Device 4 Term Figure 6. SCSI bus configuration A connector (J06) at the back of the drive accepts the I/O cable that connectsit to the system. The daisychain cable is a continuous unshielde...
Page 22 - Unpacking; bag, using the precautions described in the preface.; Inspection
Installation 17 Unpacking, inspection, and repacking After removing the packing material, inspect the drive for shipping damage.Save all packing materials for future use. The drive is shipped separately from any other items ordered for the installation. Unpacking 1. Allow the drive temperature to ap...
Page 23 - Installation procedures; Setting the control board jumpers
18 Installation procedures With the site requirements completed, the enclosure designed, and the driveunpacked, you are ready to begin the installation. The following procedures areincluded in drive installation: • Setting the control board jumpers• Installing the power supply• Attaching an optional...
Page 24 - Figure 7. Control board jumpers
Installation 19 SCSI Selectors J4A ID2 ID1 ID0 Write Protect (WP) Master/Slave (MS) Spinup Delay option (SD) Start Command option (SC) SCSI Bus Parity Check option (PAR) Sweep Cycle option (SWP) J4B Terminator Resistor-Paks (must be installed if drive is at either end of daisychain) 1 2 3 4 Terminat...
Page 25 - Installing the power supply
20 Installing the power supply A power supply and AC power cord are available if desired. The power supplyis configured before shipment to operate in one of two AC input voltage ranges.The voltage select plate on the power supply (see Figure 8) indicates the factory-preset voltage range. You may cha...
Page 26 - Figure 8. Power supply installation
Installation 21 Pin 1 DC Output Connector J15 Voltage Select Switch On / Standby Switch Cooling Fan (air inlet) Bottom-Mounting Screws (4) Ground Strap (to cabinet safety ground) DC Power Cable Side-Mounting Screws (2 on each side) AC Power Connector J1 Voltage Select Plate Chassis Safety Ground Scr...
Page 27 - Installing an optional bezel; Orient the drive and bezel as shown in Figure 9.
22 Installing an optional bezel Use the following procedure to attach an optional bezel to the drive. The bezelis available as an accessory (see section 4). 1. Remove the backing from the double-sticky tape attached to the rear surface of the bezel. 2. Orient the drive and bezel as shown in Figure 9...
Page 28 - Figure 9. Attaching a bezel
Installation 23 Control Board LED Socket LED Plug Active LED Bezel Mounting Boss Chassis Chassis Mounting Holes (2) Figure 9. Attaching a bezel
Page 29 - There are tapped holes for each type.
24 Mounting the drive The drive may be secured to the enclosure via tapped holes in either the sidesor the bottom of the drive chassis. Figure 10 shows two of the three allowableorientations. Note. The mounting screws must be completely engaged in the drive chassis, but the portion that extends into...
Page 30 - Figure 10. Mounting the drive
Installation 25 6-32 Bottom-Mounting Screws (4) DC PowerConnector J15 Pin 1 DC Power Cable M4 x .70 (metric) M4 x .70 (metric) 6-32 Screw 6-32 Screw Side-MountingScrews (2 oneach side) NOTE: Either side- or bottom-mounting screwscan be used with each drive orientation 1 1 1 2 2 Up Up 1 2 3 4 Drive P...
Page 31 - Connecting the system I/O cabling
26 Connecting the system I/O cabling Be sure that the site has been prepared in accordance with the site requirementsinformation provided earlier in this section. This procedure describes how to cable the system in a daisychain configuration.This configuration was discussed earlier in this section u...
Page 33 - Grounding the system; Figure 13. Terminator attachment—differential I/O
28 Figure 13 shows how the terminator resistor-paks are attached on drives withdifferential I/O. These terminator resistor-paks, which are dual inline packages,mount in sockets in the control board. These terminators are also marked with adot above pin 1. If the drive is located at either end of the...
Page 34 - Synchronizing the spindle; Figure 14. System diagram for spindle sync
Installation 29 Internal Source J05 Drive T SP Spindle Sync Cable Select Plug J05 Drive (master) J05 Drive SP J05 Drive T SP ✴ 32 loads maximum Terminator ✴ Master designated by jumper or by initiator External Source T Spindle Sync Cable J05 Drive J05 Drive SP J05 Drive T SP 32 loads maximum Termina...
Page 35 - Figure 15. Making spindle sync connections
30 To enable the feature, it is necessary to run an additional daisychain cable fromdrive to drive and to make a master/slave selection for each drive. Connector J5on the control board handles the cable connections. Master/slave selection ismade by a jumper on connector J4A. Figure 15 shows the two ...
Page 36 - drives are shipped with the pins disconnected.
Installation 31 For each drive in the middle of the daisychain, the cable from the preceding unitconnects to one of the two rows of pins (row A or row B), and the cable to thenext unit connects to the other row of pins. There are two ways to establish a drive as a master (supplying the syncreference...
Page 37 - Verification; were both disconnected, the spindle spinup begins immediately.
32 Verification After installing the drive, follow the sequence outlined below for initial startup. 1. Place the on/standby switch in the on ( l ) position. What follows depends on the setting of the Start Command option and the Spinup Delay optionjumpers on the control board. • If the Start Command...
Page 38 - used for normal drive operation.; Switches and indicators
Section 3. Operation This section provides the information and instructions to operate the drive. Itincludes the following topics: • Switches and indicators—locates and describes the switches and indicators used for normal drive operation. • Operating instructions—describes procedures for operating ...
Page 39 - Figure 16: Switches and indicators
34 Note. Differential unit shown. Figure 16: Switches and indicators On / Standby Switch Socket for Active LED (red) Heartbeat LED (green) Active LED(on optionalbezel) Ready LED (green) Control Board Drive Power Supply Standby = On = I
Page 41 - Operating instructions
36 Operating instructions Following initial checkout, the drive normally requires no attention from theoperator. DC power is available to the drive, as the on/standby switch on thepower supply is normally left in the on ( l ) position. If you wish to verify that the drive has completed its power on ...
Page 42 - Section 4. Parts data
Section 4. Parts data This section lists part numbers of options and accessories that can be used ina drive installation. Because the drive is depot repairable, there are no field-replaceable parts. If the drive requires maintenance, refer to the instructions insection 5. Within the continental U.S....
Page 43 - Static ground wrist strap, 6 1/2 to 8 inch wrist
38 Table 8 below lists the part numbers for options and accessories for systeminstallation. Table 8. Options and accessories PartNumber Description 12263496 Static ground wrist strap, 6 1/2 to 8 inch wrist ** I/O cables ** External terminators 96752447 Terminator resistor-pak, single-ended 15479501 ...
Page 44 - Section 5. Maintenance; This section contains the following maintenance information:; Observing maintenance precautions; • Do not remove the head and disc assembly (HDA) from the drive chassis.
Section 5. Maintenance This section contains the following maintenance information: • Observing maintenance precautions• Arranging for depot repair• Removing and replacing a drive• Removing and replacing a power supply• Packing a drive for shipment Observing maintenance precautions Because the drive...
Page 45 - To remove a drive for maintenance, perform the following steps:
40 Arranging for depot repair Before returning any units to Seagate, it is necessary to obtain a returnedmaterial authorization (RMA) number. To get the number, you will need to knowthe part number and serial number of the unit. These numbers appear on a labellocated on the front surface of the HDA....
Page 46 - M a i n t e n a n c e; Removing and replacing a power supply; supply to the Standby position.; Packing a drive for shipment
M a i n t e n a n c e 41 Removing and replacing a power supply To remove a power supply for maintenance, perform the following steps: 1. Remove power from the drive by setting the On/Standby switch on the power supply to the Standby position. 2. Disconnect the AC power cable from site power. 3. Disc...
