NEC Express 5800/120Lg, Service Manual

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1-8 System Overview
1 Power supply
The power unit supplies DC powers to the server.
2 AC inlet
The AC inlet is connected with the power cord.
3 DC power lamp
The AC power lamp blinks green if the power supply receives the AC power through the power
cord. The lamp goes on green when the power of the server is turned on.
4 Power status lamp
The lamp goes on if the power is defected.
5 AC power lamp
If the power cord is plugged to the AC inlet to supply AC power to the power supply unit, this
lamp goes on.
6 Additional power supply slot
An optional power supply may be installed on the slot.
7 Serial port B connector
The serial port B connector is used to connect the server to a device with the serial interface.
The server cannot be directly connected to a leased line through the connector.
8 Additional PCI board slots
Optional PCI boards may be inserted into the slots.
9 Mouse connector
The mouse connector is connected with the mouse coming with the server.
10 USB-1 - USB-3 connectors
The USB-1 to USB-3 connectors are connected with devices accepting the USB interface.
Connector 1 to connector 3 are assigned from right to left.
11 Keyboard connector
The keyboard connector is connected with keyboard coming with the server.
12 Serial port A connector
The serial port A connector is connected with a device having the serial interface.
13 Printer port connector
The printer port connector is connected with a printer with the Centronics interface.
14 Monitor connector
The monitor connector is connected with the display unit.
15 Link/ACT lamp
The Link/ACT lamp shows the LAN access status.
16 LAN connector
The LAN connector is connected with a network system on LAN. The value following the bold-
faced number indicates the port number.
16-1 LAN2 supports 1000BASE-T/100BASE-TX/10BASE-T network subsystem.
16-2 LAN1 supports 100BASE-TX/10BASE-T network subsystem.
17 Speed lamp
Indicates the LAN transfer rate.
17-1 1000/100/10 lamp
17-2 100/10 lamp
Figure 1-4. Rear View