Troubleshooting hardware problems

CFE (common firmware environment) won't boot. Last console status code might be [ZBSS], [L12F], or [CERR].

This indicates that something is wrong with the memory DIMM.

To fix this problem, begin with the first procedure in the following list. If that doesn't solve the problem, continue down to the next troubleshooting tip on the list until the problem is solved.

• Unplug the battery in the CPU module for 5 seconds, plug the battery back in, and try booting the appliance.

  Note
  Unplugging the battery might reset the clock.

• Reseat the DIMM on the CPU module.
• Replace the DIMM.
• Replace the CPU module.

CFE comes up but [CERR] is printed out when booting the kernel

This is a problem with NVMEM. NVMEM is mainly for power outages. Handling the CPU module outside the shelf while NVMEM is valid might corrupt memory.

• If the CPU module was not handled, contact Network Appliance Customer Service.
• Otherwise, unplug the battery in the CPU module for 5 seconds, plug the battery back in, and try booting the appliance.

  Note
  Unplugging the battery might reset the clock.

CFE comes up but can't boot anything from the CompactFlash card.

Contents of the CompactFlash card are not correct.

Try this at the CFE prompt, which is equivalent to `dir c:' from a PC:

test fatfs ide0.0

If no errors occur and nothing is shown on the console, the contents of the CompactFlash card are not valid.

If there is an error, replace the CompactFlash card.

Real-Time Clock (RTC) loses its time.

The rechargeable battery for NVMEM also powers the real-time clock. If this battery is disconnected for more than a few seconds or the battery is discharged, the real-time clock might be reset.

Plug the battery back in to the motherboard and reset the clock to the correct time.

The appliance does not recognize any of the installed disk drives.

The 1 Gb/2 Gb switch is not set to the 1 Gb position.

1. Power off the appliance.
2. Move the switch to the 1 Gb position. See Step 6 of Connecting an FAS250 to a network.
3. Power on the appliance.