Slide 27
4. Start up Operation (5)
The signal from the power micom turns on the switching transistor Q500.
This allow F15V to be output to the DC/DC circuit on the A board.
6
The F15V is supplied to IC8100, IC8101, IC8704 and IC8705.
7
The P15V is applied to the SN/SC/SS board.
The VSUS is applied to SN/SC/SS board.
The Vda is applied to C board.
11
Next, the micro processor (IC8000) outputs PANEL_MAIN_ON signal to the power micom.
9
The power micom outputs two switching switching signals.
- One signal enables SW 502 to pass the P15V
- The other signal enables DC/DC circuit to produce Vsus and Vda voltages.
10
The voltages from these ICs are distributed to the different circuits where they’re used.
8
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