User's Manual

Confidential & Proprietary 27/87
MPSU receives -48V of input and outputs +6V and +9V of DC power.
On the front panel, this unit has an output test port and it also has DC ALM LED Indicator to
show whether output gets faulty.
Figure 4.6 – MPSU Outer Look
4.1.5 Front/rear panels of BIU
1) Front panel
Figure 4.7 – BIU front panel Outer Look
Item Description
1. MDBU LED LED to show whether MDBU is installed and gets faulty