Owner's Manual

448 Troubleshooting and Recovery
Troubleshooting a Non-responsive CMC
NOTE: It is not possible to log in to the standby CMC using a serial console.
If you cannot log in to CMC using any of the interfaces (the Web interface,
Telnet, SSH, remote RACADM, or serial), you can verify the
CMC functionality by observing the LEDs on CMC, obtaining
recovery information using the DB-9 serial port, or recovering the
CMC firmware image.
Observing the LEDs to Isolate the Problem
Facing the front of CMC as it is installed in the chassis, you see two LEDs on
the left side of the card.
Top LED — The top green LED indicates power. If it is NOT on:
1
Verify that you have AC present to at least one power supply.
2 Verify that the CMC card is seated properly. You can release/pull on the
ejector handle, remove CMC, reinstall CMC making sure the board is
inserted all the way and the latch closes correctly.
PSU (Oval) Green, glowing steadily AC OK
(Oval) Green, blinking Not used
(Oval) Green, dark AC Not OK
Amber, glowing steadily Not used
Amber, blinking Fault
Amber, dark No fault
(Circle) Green, glowing
steadily
DC OK
(Circle) Green, dark DC Not OK
Table 12-14. LED Color and Blinking Patterns
(continued)
Component LED Color, Blinking Pattern Meaning