Microprocessor-Board Leds - IBM 71412RU User Manual

Microprocessor-board LEDs

The following illustration shows the LEDs on the microprocessor board.
Board
fault LED
Microprocessor 3
error LED
VRM 3 error LED
Microprocessor 1
error LED
VRM 1 error LED
Table 2 describes the function of each status LED other than light path diagnostics
LEDs.
Table 2. Microprocessor-board status LEDs (other than light path diagnostics)
LED
BMC heartbeat
FPGA heartbeat
Machine check
3
1
Scalability enabled LED
Description
When this LED is flashing, it indicates normal operation of the
baseboard management controller.
When this LED is flashing, it indicates normal operation of the FPGA
(field-programmable gate array) chip.
When this LED is lit continuously, the server is prepared to capture a
machine check. When this LED is flashing, the server has captured
a machine check. When this LED is off, the server is not prepared to
capture a machine check.
4
2
Machine check LED
Power good LED
Chapter 2. Installing optional devices
FPGA heartbeat
LED
BMC heartbeat
LED
Microprocessor 4
error LED
VRM 4 error LED
Microprocessor 2
error LED
VRM 2 error LED
23