Understanding The Light Path Leds - IBM SurePOS 700 Series Hardware Service Manual

Understanding the light path LEDs

Table 10 describes the front panel LEDs and the component or process each LED
represents (see also Figure 5 on page 11). This table also describes the possible
conditions and actions for you to resolve the condition.
Table 10. Diagnostic processor LEDs
LED Component
C Information
I LED 1, fan
J LED 2, system board
K LED 3, upper HDD
L LED 4, lower HDD
M LED 5, power supply
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SurePOS 700-723/743/783/784 Hardware Service Guide
Conditions when lit
A hardware fault has occurred.
The processor fan is no longer
spinning.
The system board has failed.
The HDD failed the hard disk
health check.
The power supply voltage is
operating outside of the supported
parameters, or the power supply
fan is no longer spinning.
Action
Open the front door and view
LEDs I, J, K, L, and M for actions.
When the fault is corrected, the
information LED is no longer lit.
1. Check the processor vent for
blockages or dust build up.
2. Ensure that the processor fan
is plugged into the system
board.
3. Replace the processor fan.
When the fault is corrected, the
fan LED is no longer lit.
Replace the system board.
When the fault is corrected, the
system board LED is no longer lit.
1. Check that the HDD
connection to the system.
Make sure that it is secured
and completely engaged in the
drive bay.
2. If the HDD presence or type
change is intended, no failure
occurred. Reset the system
event log to clear the failure.
When the fault is corrected, the
HDD LED is no longer lit.
1. Ensure that the power supply
fan is not blocked or
obstructed.
2. Replace the power supply.
When the fault is corrected, the
power supply LED is no longer lit.