Owner's Manual

436 Troubleshooting and Recovery
Obtain Recovery Information From the DB-9 Serial Port
If the bottom LED is amber, recovery information should be available from
the DB-9 serial port located on the front of CMC.
To obtain recovery information:
1
Install a NULL modem cable between CMC and a client machine.
2 Open a terminal emulator of your choice (such as HyperTerminal or
Minicom). Set up: 8 bits, no parity, no flow control, baud rate 115200.
A core memory failure displays an error message every 5 seconds.
3 Press <Enter>. 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 returned to Dell.
• If the prompt indicates
Bad FW Images , then follow the steps in
"Recovering the Firmware Image" on page 436 to fix the problem.
Recovering the Firmware Image
CMC enters recover mode when a normal CMC OS 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 firmware update file,
firmimg.cmc. This is the same firmware image file used for normal firmware
updates. The recovery process displays its current activity and boots to the
CMC OS upon completion.