Service manual

1-62 AlphaServer GS80/160/320 Service Manual
1.15 Power Modules
Each QBB has two power modules; the H-switch has one power module.
1.15.1 Main Power Module
The main power module converts 48 VDC power supplied by the power
supplies to DC voltages required by the clocks and devices on the QBB.
Figure 1– 27 Main Power Module Block Diagram