Lenovo ThinkSystem SR645 V3 System Configuration Manual page 48

Table 12. System-board-assembly LEDs description (continued)
LED
XCC heartbeat The XCC heartbeat LED helps
3
LED (green) you identify the XCC status.
• Blinking (1Hz) : XCC is working
• Blinking at other speeds or
• Off: XCC is not working.
System status The system status LED indicates
4
the working status of the system.
LED (green)
• Fast Blinking (about four
• Slow Blinking (about one flash
• ON: Power on
Video of LED blinking status is
available at:
ThinkSystem SR645 V3 System Configuration Guide
40
Description
normally.
always on: XCC is at the initial
phase or is working
abnormally.
flashes per second): Power
fault or is waiting for XCC
power permission ready.
per second): Power off and is
ready to be powered on
(standby state).
YouTube
Action
• If the XCC heartbeat LED is always off or always on, do
the following:
– If XCC cannot be accessed:
1. Re-plug the power cord.
2. Check and ensure that the system I/O board
and firmware and RoT security module are
installed correctly. (Trained technician only)
Reinstall them if needed.
3. (Trained technician only) Replace the firmware
and RoT security module.
4. (Trained technician only) Replace the system I/
O board.
– If XCC can be accessed, replace the system I/O
board.
• If the XCC heartbeat LED is blinking fast over 5
minutes, do the following:
1. Re-plug the power cord.
2. Check and ensure that the system I/O board and
firmware and RoT security module are installed
correctly. (Trained technician only) Reinstall them
if needed.
3. (Trained technician only) Replace the firmware and
RoT security module.
4. (Trained technician only) Replace the system I/O
board.
• If the XCC heartbeat LED is blinking slow over 5
minutes, do the following:
1. Re-plug the power cord.
2. Check and ensure that the system I/O board and
firmware and RoT security module are installed
correctly. (Trained technician only) Reinstall them
if needed.
3. If the problem remains, contact Lenovo Support.
• If the system status LED is blinking fast over 5 minutes
and cannot power on, check the XCC heartbeat LED
and follow the actions for the XCC heartbeat
• If the system status LED remains off or is blinking fast
(about four flashes per second) and the system error
LED on the front panel is on (yellow), the system is in a
power fault status. Do the following:
1. Re-plug the power cord.
2. Remove installed adapters/devices, one at a time,
until you reach the minimal configuration for
debugging.
3. (Trained technician only) If the problem remains,
capture FFDC log, and replace the processor
board.
LED.