IBM 8685 Hardware Maintenance Manual - Page 14

Server controls and indicators, Front view, ACT activity LED

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Server controls and indicators This section identifies the controls and indicators on the front and rear of your server. Front view Tower and rack models Reset button Power-control button Power-on LED Activity LED System information LED System error LED Hard disk drive activity LED Hard disk drive status LED Diskette drive activity LED Diskette-eject button CD-ROM drive activity LED CD-eject button Notes: 1. The illustrations in this document might differ slightly from your hardware. 2. An amber LED illuminates when a system error or event has occurred. To identify the error or event, check the LEDs on the Light Path Diagnostics™ panel located on the server (see "Light Path Diagnostics" on page 34), or review the Error Log in the Configuration/Setup Utility program (see "Viewing error logs from the Configuration/Setup Utility program" on page 30). For more information about the Configuration/Setup Utility program, see "Choices available from the Configuration/Setup Utility main menu" on page 11. Power-on (system power) LED: When this green LED is on, system power is present in the server. When this LED flashes, the server is in Standby mode (the system power supply is turned off and ac current is present). When this LED is off, a power supply, ac power, or an LED has failed. Power-control button: Press this button to manually turn the server on or off or to place the server in Standby mode (see "Standby mode" on page 8). Power-control button shield: You can install this circular disk over the power-control button to prevent accidental manual power-off. This disk is provided with your server. Reset button: Press this button to reset the server and run the power-on self-test (POST). ACT (activity) LED: This green LED is on when there is activity on the server. INFO (system information) LED: When this amber LED is on, the server power supplies are nonredundant, or some other noncritical event has occurred. The event 4 xSeries 255 Type 8685: Hardware Maintenance Manual and Troubleshooting Guide

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Server controls and indicators
This section identifies the controls and indicators on the front and rear of your
server.
Front view
Tower and rack models
System error LED
System information LED
Activity LED
Reset button
Power-control button
Power-on LED
Diskette drive
activity LED
Diskette-eject
button
CD-ROM drive
activity LED
CD-eject button
Hard disk drive
activity LED
Hard disk drive
status LED
Notes:
1.
The illustrations in this document might differ slightly from your hardware.
2.
An amber LED illuminates when a system error or event has occurred. To
identify the error or event, check the LEDs on the Light Path Diagnostics
™
panel located on the server (see “Light Path Diagnostics” on page 34), or review
the Error Log in the Configuration/Setup Utility program (see “Viewing error logs
from the Configuration/Setup Utility program” on page 30). For more information
about the Configuration/Setup Utility program, see “Choices available from the
Configuration/Setup Utility main menu” on page 11.
Power-on (system power) LED:
When this green LED is on, system power is
present in the server. When this LED flashes, the server is in Standby mode (the
system power supply is turned off and ac current is present). When this LED is off,
a power supply, ac power, or an LED has failed.
Power-control button:
Press this button to manually turn the server on or off or to
place the server in Standby mode (see “Standby mode” on page 8).
Power-control button shield:
You can install this circular disk over the
power-control button to prevent accidental manual power-off. This disk is provided
with your server.
Reset button:
Press this button to reset the server and run the power-on self-test
(POST).
ACT (activity) LED:
This green LED is on when there is activity on the server.
INFO (system information) LED:
When this amber LED is on, the server power
supplies are nonredundant, or some other noncritical event has occurred. The event
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xSeries 255 Type 8685: Hardware Maintenance Manual and Troubleshooting Guide