IBM PC Server 325, User Handbook Manual

Page: 21 / 288

Controls and Indicators
Unattended Power-On Indicator: This green LED lights
when the server powers on in Unattended mode.
SCSI Hard Drive In-Use Indicator: This amber LED lights
when your server is accessing a SCSI device. If this light
remains illuminated, this might indicate that either the SCSI
bus or the system microprocessor has stopped.
2 Secondary Microprocessor In-Use Indicator: This amber
LED blinks to show the activity of a microprocessor installed
in the secondary microprocessor socket. The LED lights
during POST to indicate the presence of the microprocessor.
When you install a secondary microprocessor, it becomes the
startup microprocessor.
Ethernet Receive Indicator: This amber LED shows receive
activity on the network.
Security Indicator: When tamper-detection software is
installed and enabled, this amber LED shows that a security
hardware error occurred.
Ethernet Link Status Indicator: This green LED shows an
active link connection on the 10BASE-T interface.
Ethernet Transmit Indicator: This amber LED shows
transmit activity on the network.
1 Primary Microprocessor In-Use Indicator: This amber LED
blinks to indicate the microprocessor activity; it also comes on
during POST.
T
POST Activity Indicator: This amber LED lights while the
power-on self-test (POST) and the configuration utility
programs are running. If this light remains on, either a POST
error has occurred, or the system microprocessor has stopped.
Power-On Indicator: This green LED lights when you turn
on your server by pressing the power switch, and when the
server powers on in Unattended mode.
Chapter 1. Getting Started with PC Server 325
7