Nortel Networks NN44200-700 manual System troubleshooting, Hardware troubleshooting

54Chapter 3 Hardware troubleshooting

KB/Interface Error	The keyboard interface test failed.
Memory Size Decreased	The memory size has decreased since the last
	boot. If you have not removed any memory,
	then the memory may be faulty.
Memory Size Increased	The memory size has increased since the last
	boot. If you have not added any memory, there
	is a problem with the system.

Memory Size Changed

No Boot Device Available

Off Board Parity Error

On Board Parity Error

Parity Error

NVRAM / CMOS / PASSWORD cleared by Jumper

<CTRL_N> Pressed

The memory size has changed since the last boot. If you did not add or remove any memory, then the memory may be faulty.

The system did not find a device to boot from.

A parity error occurred on an offboard card. This error is followed by the card address.

A parity error occurred in onboard memory. This error is followed by the card address.

A parity error occurred in onboard memory at an unknown address.

NVRAM, CMOS, and passwords have been cleared. Power the system down and remove the jumper.

The CMOS is ignored and NVRAM is cleared. You must enter Setup.

System troubleshooting

Trouble symptom	Action
The system boots, the fans turn at high speed	Two possible causes are:
but do not return to normal speed. The system	• One or more fans are faulty and you need
is extremely noisy.
	to replace the fan module. For instructions,
	see the 600r Server Maintenance and
	Diagnostics Guide (NN44200-703).
	• Reflash the system board F/W with
	Nortel-approved BMC and FRU/SDR and
	try again.

The system boots and beeps, but there is no video. (In some cases a red LED appears on the front cover).

If neither of the above actions resolves the problem, replace the server.

Refer to the error and beep codes or contact Nortel at http://www.nortel.com/support

Nortel CallPilot

Troubleshooting Reference Guide

NN44200-700 01.05 Standard

5.026 June 2007

Copyright © 2007, Nortel Networks