Seagate ST423451N Product Manual page 9

Elite 23 Product Manual, Rev. A
Figure 1. Elite 23 disc drive (ST423451N drive shown) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Figure 2. Elite 23 family drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Figure 3. Typical Elite 23 drive +5 V and +12 V current profile . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Figure 4. Location of PCB components listed in Table 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Figure 5. Recommended mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Figure 6. Mounting configuration dimensions for "N" models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Figure 7. Mounting configuration dimensions for "W" and "WD" models. . . . . . . . . . . . . . . . . . . . . . . . 27
Figure 8. ST423451N option select jumper connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Figure 9a. ST423451W/WD option select jumper connectors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Figure 9b. ST423451 "WD" model auxillary remote cable ID select . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Figure 10a. J4A connections for Activity, Fault, and Ready LED indicators for all models . . . . . . . . . . . . 35
Figure 10b. J7 auxiliary remote cable connections for Ready and Fault indicators, "WD" model only . . . 35
Figure 11. Suggested air flow . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Figure 12. Physical interface for "N" model drives. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
Figure 13. Physical interface for "W" and "WD" model drives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
Figure 14. SCSI daisy-chain interface cabling. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
Figure 15. Non-shielded 50-pin SCSI device connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
Figure 16. Non-shielded 68-pin SCSI device connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
Figure 17. Single-ended transmitters and receivers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
Figure 18. Typical differential I/O line transmitter/receiver and terminators . . . . . . . . . . . . . . . . . . . . . . 60
List of Figures
vii