Fujitsu MBA3073NC Product Manual - Page 59
Current waveform Max seek, Power on/off sequence 1
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Figure 4.8 shows the max seek current waveform of +5V DC and +12V DC. +5VDC MBA3300NC MBA3300NP MBA3147NC MBA3147NP MBA3073NC MBA3073NP Current (500mA/div) Current (500mA/div) Current (500mA/div) Time (10 msec/div) +12VDC MBA3300NC MBA3300NP Time (10 msec/div) MBA3147NC MBA3147NP Time (10 msec/div) MBA3073NC MBA3073NP Current (500mA/div) Current (500mA/div) Current (500mA/div) Time (10 msec/div) Time (10 msec/div) Figure 4.8 Current waveform (Max seek) Time (10 msec/div) (3) Power on/off sequence a) The order of the power on/off sequence of +5V DC and +12V DC, supplied to the HDD, does not matter. b) In a system which uses the terminating resistor power supply signal (TERMPWR) on the SCSI bus, the requirements for +5V DC given in Figure 4.9 must be satisfied between the HDD and at least one of the SCSI devices supplying power to that signal. Figure 4.9 Power on/off sequence (1) C141-E270 55 Downloaded from www.Manualslib.com manuals search engine