System-Board Leds - IBM System x3650 M3 4255 Service Manual

System-board LEDs

The following illustration shows the light-emitting diodes (LEDs) on the system
board.
Note: Error LEDs remain lit only while the server is connected to power.
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IBM System x3650 M3 Types 4255, 7945, and 7949: Problem Determination and Service Guide
Table 5. System-board LEDs
LED
Error LEDs
12-volt power (A, B, C, D, E
and AUX) error LEDs
Description
The associated component has failed.
If any of these LEDs are lit, there is a failure in the
associated system-board power channel (see "Power
problems" on page 55).