Nortel Networks NN44200-700 manual POST Beep Codes, Internal LEDs, Hardware troubleshooting

52Chapter 3 Hardware troubleshooting

Internal LEDs

Description	Information
MPB96 board LEDs	The three red LEDs at the top of the MPB96 board are visible through
	the grill at the back of the server.
	• The PCI FPGA Done LED (the closest to the card I/O bracket)
	comes on at startup and turns off immediately. This indicates
	that the board works properly and was detected correctly by the
	system. If this LED stays on after the startup, the card is defective
	and must be replaced.
	• The DSP FPGA Done LED comes on at startup and stays on
	until the CallPilot drivers are loaded and the diagnostic screen
	appears. If the LED stays on after the operating system starts and
	the CallPilot diagnostic screen appears, then the MPB96 board is
	defective or the DSP and NTBus drivers do not function properly.
	• The CTbus FPGA Done LED (the farthest from the card I/O
	bracket) works in tandem with the DSP FPGA Done LED and
	turns on and off at the same time.

POST Beep Codes

If an error occurs before video initialization, the POST emits beep codes that indicate errors in hardware, software, or firmware.

A beep code is a series of separate tones, each equal in length. Record the beep code sequence before calling Nortel technical support.

Beep count	Description
1, 2, or 3	A Memory error occurred. Reseat the memory
	or replace the DIMMs with known good
	modules.
4 – 7 or 9 – 11	A fatal error occurred and indicates a possible
	serious system problem. Remove all the add-in
	cards and restart the system. If the error still
	occurs, contact Nortel support. If the beep
	codes are not generated after you remove
	the add-in cards, insert the cards one at a
	time, booting the system between each card
	addition, until the beeps again occur to reveal
	the malfunctioning card.
8	A problem with the onboard video card occurred
	indicating a fault on the server board.

Nortel CallPilot

Troubleshooting Reference Guide

NN44200-700 01.05 Standard

5.026 June 2007

Copyright © 2007, Nortel Networks