Power Supply Requirements; Current Waveform (+12 Vdc) - Fujitsu MAH3182MC Maintenance Manual

4.2

Power Supply Requirements

(1) Allowable input voltage and current
The power supply input voltage measured at the power supply connector pin of the IDD (receiving
end) must satisfy the requirement given in Subsection 2.1.3. (For other requirements, see Items (4)
and (5) below.)
(2) Current waveform (reference)
Figure 4.11 shows the waveform of +12 VDC.
MAJ3364 series
MAH3182 series
(3) Power on/off sequence
a) The order of the power on/off sequence of +5 VDC and +12 VDC, supplied to the IDD, does
not matter.
b) In a system which uses the terminating resistor power supply signal (TERMPWR) on the SCSI
bus, the requirements for +5 VDC given in Figure 4.12 must be satisfied between the IDD and
at least one of the SCSI devices supplying power to that signal.
MAJ3182 series
MAH3091 series
Figure 4.11 Current waveform (+12 VDC)
C141-E103-01EN
MAJ3091 series
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