M440LX Server System Product Guide
165
Power System Control Signals
Power Enable/Disable (PON)
The PON control signal originates on the system board, and it is routed
through the power share backplane microcontroller. If the +5 V and +12 V
power going to the system board or the peripherals exceeds 240 VA, the
backplane microcontroller will disassert the PON control going to each
power supply (J4, J6, and J9). This signal is used to enable and disable the
power supplies.
Remote Sense Connections
Individual remote sense outputs are provided to each +5 V and +3.3 V
power supply section. Remote voltage sense for +5 V and +3.3 V is done on
the system board. The +5 V and +3.3 V remote sense lines are routed
through the power share backplane and connect to the current sense
circuitry.
The +12 V is not sensed remotely. Instead, it is sensed on the power share
backplane.
Load Share Connection
In systems with redundant power systems, the +5 V, +3.3 V, and +12 V
outputs from each power supply are routed through the power share
backplane. The current from each power supply output is monitored with a
current monitoring circuit. This current’s value is used to adjust the load
share of each power supply output.
Output Power Connections
The +12 V, +5 V, and +3.3 V power outputs are routed through J1 to the
system board power connector. The +12 V and +5 V power outputs are also
routed through J5 to the peripheral power connector.
The -12 V, -5 V, and +5 V standby outputs are joined together through an
isolation circuit and connected to the system board through connector J1.
Содержание MB440LX
Страница 1: ...Intel MB440LX System Installation Guide...
Страница 6: ...1 6 Your Chapter Title Goes Here...
Страница 16: ...16 Contents...
Страница 26: ...26 Chapter 1 Server Description OM05793 Figure 1 4 Security Padlocks...
Страница 48: ...48 Chapter 2 Installing The System...
Страница 78: ...78 Chapter 3 Configuring The System...
Страница 100: ...100 Chapter 4 Working Inside Your System OM04639 Figure 4 11 Installing an ISA Add in Board Component side Up...
Страница 101: ...M440LX Server System Product Guide 101 OM04640 Figure 4 12 Installing a PCI Add in Board Component side Down...
Страница 114: ...114 Chapter 4 Working Inside Your System OM05791A 1 2 3 Figure 4 19 Lithium Back up Battery...
Страница 116: ...116 Chapter 4 Working Inside Your System OM05268 Figure 4 20 Removing the Front Panel Board...
Страница 118: ...118 Chapter 4 Working Inside Your System OM05278 Figure 4 21 Front Panel Fans...
Страница 127: ...M440LX Server System Product Guide 127 OM05771 Figure 4 26 Removing the Power Share Backplane...
Страница 132: ...132 Chapter 4 Working Inside Your System...
Страница 137: ...M440FX Server System Product Guide 137 OM06470 1 2 Figure 5 2 Installing a Hard Disk Drive...
Страница 200: ...200 Chapter 9 I O Ports and Connectors...
Страница 224: ...224 Chapter 10 Solving Problems...