9
Figure 3.2.1 Optical distribution frame
3.3 Power supply unit
The power supply unit is located under the switch board. Access to the power
supply unit is limited. The power supply unit has an aluminum radiator that is
pressed against the back panel of the switch to remove the heat to the switch
enclosure.
Figure 3.3 Power supply unit
3.4 Switch board
The switch board is mounted on an aluminum plate that removes the heat from
hot electronic components to the switch enclosure.
