Power Supplies; Figure 6-4 Power Supplies And Poweron Sequence - HP SureStore Optical Jukebox 160ex Service Manual

Power Supplies

There are two autoranging power supplies.
• One supplies +5 volts at 15 amperes and +12 volts at 10 amperes,
• The other supply provides +24 volts at 5 amperes, which powers the
Figure 6-4 Power Supplies and Poweron Sequence
Line power is connected through the power distribution PCA in the
interface enclosure. Connection is direct to the 24-volt power supply.
When the 24-volt power supply comes up and is good AND if the power
standby switch on the right side of the jukebox is in the ON position, the
output of the 24-volt power supply is enabled. The 24-volt output closes
the relay on the power distribution PCA, allowing line power to be
applied to the 5/12-volt power supply for the jukebox.
The 24V power supply is equipped with a fan-detect circuit that turns
the supply off if the fans over the drives stop operating.
Chapter 6
which powers the drives and the jukebox logic.
motors.
Theory of Operation
Power Supplies
6-11