Lenovo ThinkSystem SR635 V3 - Page 322

Figure 217. LEDs on the firmware and RoT security module
1 AP0 LED (Green) 2 AP1 LED (Green) 3 Fatal Error LED (Amber)
Table 52. LEDs description
Scenario
AP0
LED
AP1
LED
Fatal
Error
LED
FPGA
heartbeat
LED
note
XCC
heartbeat
LED
note
Actions
RoT security
module fatal
firmware failure
Off Off On N/A N/A Replace the firmware and RoT
security module.
Blink N/A On N/A N/A Replace the firmware and RoT
security module.
Blink
N/A On On N/A Replace the firmware and RoT
security module.
No system power
(FPGA heartbeat
LED off)
Off Off Off Off Off If the AC power is on, but the
system board assembly does
not have power, then:
1. Check the power supply
unit (PSU) or power
interposer board (PIB) if
any. If the PSU or PIB has
any error, replace it.
2. If the PSU or PIB is good,
do the following:
a. Replace the system I/O
board.
b. Replace the processor
board.
XCC firmware
recoverable error
Blink
N/A Off N/A N/A Information only. No action is
required.
XCC firmware is
recovered from
error
Blink
N/A Off N/A N/A Information only. No action is
required.
UEFI firmware
authentication
failure
N/A
Blink
Off N/A N/A Information only. No action is
required.
312 ThinkSystem SR635 V3 User Guide