User manual MAXTOR ST39251 VOLUME 1

[. . . ] . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Cheetah X15 Disc Drive: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ST318451LW/LC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ST39251LC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Product Manual, Volume 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Cheetah X15 Disc Drive: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ST318451LW/LC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ST39251LC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Product Manual, Volume 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . © 2000, 2001 Seagate Technology LLC. E October 2001 Seagate, Seagate Technology, and the Seagate logo are registered trademarks of Seagate Technology LLC. [. . . ] After the temperatures stabilize, measure the case temperature of the components listed in Table 4 (see note [2]). Operation of the drive at the maximum case temperature is intended for short time periods only. Continuous operation at the elevated temperatures will reduce product reliability. Table 4: Items in Figure 11 PCBA and HDA temperatures Maximum allowable case temperature (°C) operating Maximum allowable case [3] temperatures (°C) to meet MTBF spec. HDA [2] U5 U14 U11 U20 Notes. [1] 65 103. 3 80. 8 63. 9 79. 6 50 83. 3 60. 8 43. 9 59. 6 [2] [3] Section 8. 3. 1 describes the air-flow patterns used when generating the 1, 200, 000 hours MTBF guidelines in column 2. Inlet air temperature to the drive was 77°F (25°C), plus 9°F (5°C) temperature rise in the test enclosure (86°F/30°C ambient local to the drive). E ­40° to 158°F (­40° to 70°C) package ambient with a maximum gradient of 36°F (20°C) per hour. This specification assumes that the drive is packaged in the shipping container designed by Seagate for use with drive. HDA Temp. Check Point 1. 0 " . 5" Model LC PCBA Model LW PCBA J6 J6 U11 J4 U11 J4 U20 U1 U3 U7 U1 U3 U20 U7 U18 U6 U18 U6 U14 U5 U14 U5 J1A J1 Figure 11. Locations of PCBA components listed in Table 4 6. 4. 2 Relative humidity The values below assume that no condensation on the drive occurs. Operating 5% to 95% non-condensing relative humidity with a maximum gradient of 10% per hour. Non-operating ­1, 000 to +40, 000 feet (­305 to +12, 210 meters) Cheetah X15 Product Manual, Rev. E 6. 4. 4 Shock and vibration 29 Shock and vibration limits specified in this document are measured directly on the drive chassis. If the drive is installed in an enclosure to which the stated shock and/or vibration criteria is applied, resonances may occur internally to the enclosure resulting in drive movement in excess of the stated limits. If this situation is apparent, it may be necessary to modify the enclosure to minimize drive movement. The limits of shock and vibration defined within this document are specified with the drive mounted by any of the four methods shown in Figure 12, and in accordance with the restrictions of Section 8. 4. Operating--normal The drive, as installed for normal operation, shall operate error free while subjected to intermittent shock not exceeding 15. 0 Gs at a maximum duration of 11 msec (half sinewave). The drive, as installed for normal operation, shall operate error free while subjected to intermittent shock not exceeding 65. 0 Gs at a maximum duration of 2 msec (half sinewave). Operating--abnormal Equipment, as installed for normal operation, does not incur physical damage while subjected to intermittent shock not exceeding 40 Gs at a maximum duration of 11 msec (half sinewave). Shock occurring at abnormal levels may promote degraded operational performance during the abnormal shock period. Specified operational performance will continue when normal operating shock levels resume. Non-operating The limits of non-operating shock shall apply to all conditions of handling and transportation. The drive subjected to nonrepetitive shock not exceeding 75 Gs at a maximum duration of 11 msec (half sinewave) shall not exhibit device damage or performance degradation. The drive subjected to nonrepetitive shock not exceeding 250 Gs at a maximum duration of 2 msec (half sinewave) does not exhibit device damage or performance degradation. [. . . ] Before calling, note your system configuration and drive model number (ST####). SeaTDDTM (+1-405-936-1687) is a telecommunications device for the deaf (TDD). You can send questions or comments 24 hours daily and exchange messages with a technical support specialist from 8:00 A. M. (central time) Monday through Friday. 72 Cheetah X15 Product Manual, Rev. [. . . ]