System Diagnostic Leds - Acer Altos R720 Series User Manual

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System diagnostic LEDs

Item Description
A Diagnostic POST code
indicators*
B System ID indicator
C System status indicator
D DIMM error indicator
* For more information on how to troubleshoot during a system hang, refer to the
Diagnostic POST code table on page 149.
Item Description
E, F CPU error indicator
G 5-volt standby present
indicator
1 System tour