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NOTE: It is not possible to log in to the standby CMC using a serial console.
Observing LEDs to Isolate the Problem
There are two LEDs on the left of the card:
• Upper-left LED — Indicates power status. If it is not ON:
– Verify that you have AC present to at least one power supply.
– Verify that the CMC card is seated properly. You can release or pull the ejector handle, remove the
CMC, reinstall the CMC making sure that the board is inserted all the way and the latch closes
correctly.
• Lower-left LED — This LED is multi-colored. When CMC is active and running, and there are no
problems, the bottom LED is blue. If it is amber, a fault is detected. The fault may be caused by any of
the following three events:
– A core failure. In this case, the CMC board must be replaced.
– A self-test failure. In this case, the CMC board must be replaced.
– An image corruption. In this case, upload the CMC firmware image to recover the CMC.
NOTE: A normal CMC boot or reset takes over a minute to fully boot into its operating system
and be available for login. The blue LED is enabled on the active CMC. In a redundant, two-CMC
configuration, only the upper-right green LED is enabled on the standby CMC.
Obtain Recovery Information from DB-9 Serial Port
If the bottom LED is amber, recovery information is available from the DB-9 serial port located on the
front of CMC.
To obtain recovery information:
1. Install a NULL modem cable between a CMC system and a client system.
2. Open a terminal emulator of your choice (such as HyperTerminal or Minicom). Enter the following
specification when prompted: 8 bits, no parity, no flow control, baud rate 115200.
3. Press the <Enter> key.
If a recovery prompt appears, additional information is available. The prompt indicates the CMC slot
number and failure type.
To display failure reason and syntax for a few commands, type recover, and then press <Enter>.
Sample prompts:
recover1[self test] CMC 1 self test failure
recover2[Bad FW images] CMC2 has corrupted images
• If the prompt indicates a self test failure, there are no serviceable components on CMC. CMC is
bad and must be returned to Dell.
• If the prompt indicates Bad FW Images, complete tasks in Recovering Firmware Image.
Recovering Firmware Image
CMC enters recover mode when a normal CMC operating boot is not possible. In recover mode, a small
subset of commands are available that allow you to reprogram the flash devices by uploading the
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