Lenovo EN4023 User Manual page 37

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FIGURE 15
Table 7
behavior.
TABLE 7
LED icon
!
Table 8
POST, all LEDs are lit briefly. Certain error conditions will illuminate the amber Fault LED; for
example, if temperatures exceed normal parameters. In such circumstances, power will shut off.
TABLE 8
System status LEDs functionality
Condition Power LED (Green)
Pre POST Off
POST start First 1-3 seconds on,
then blinking during
diagnostics and
initialization
POST critical failure Off
POST noncritical failure On
POST complete OK On
Extended POST start On
Introduction
Locating the information panel, LEDs, and external ports
Power LED
Location LED
System status LEDs
identifies the three system LEDs. After POST is successfully completed, this is normal LED
System status LEDs
LED name
The left-most LED is the Power LED.
The middle LED is the Location LED.
The right-most LED is the Fault LED.
identifies how the system status LEDs behave when certain conditions are met. During
Location LED (Blue)
Off
First 1-3 seconds on,
then off
Off
Off
Off
Off
3 Fault LED
LED description
When lit, it appears solid green.
When lit, it appears solid blue.
When lit, it appears solid amber.
Fault LED (Amber) Comments
Off Power off
First 1-3 seconds on, Lamp test progress indication
then off
On Switch nonfunctional; replacement
required
Off Switch operational in degraded mode
Off Fully operational
Off Switch operational in degraded mode
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