3Com Server manual Troubleshooting, LEDs, Color Flashing Steady Off

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4 TROUBLESHOOTING

This chapter describes how to use the 3C395 NIC LEDs and diagnostic tests as troubleshooting aids. It also provides tips for troubleshooting.

LEDs

Before the LEDs can be used for troubleshooting, the NIC must be connected to the network (see Chapter 2) and the network driver must be installed (see Chapter 3).

Table 4-1 describes the 3C395 NIC LEDs.

Table 4-13C395 NIC LED Descriptions

	TX
	TX
L	ACT
N	10
K	100

ACT

10LNK

100LNK

LED	Color	Flashing	Steady	Off

ACT	Yellow:	Network traffic	Heavy network	No traffic
	Port traffic for	present	traffic
	10 or 100 Mbps
10 LNK	Green:	Not applicable	Good	No connection
	Link integrity		10BASE-T	between NIC
			connection	and hub
			between NIC
			and hub
100 LNK	Green:	Not applicable	Good	No connection
	Link integrity		100BASE-TX	between NIC
			connection	and hub
			between NIC
			and hub

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Contents Part No -1128-000 Published February 3Com Corporation 5400 Bayfront Plaza Santa Clara, California Contents Configuration Figures Tables Text Conventions Installation RequirementsLifetime Limited Warranty Belgium, Netherlands, Luxembourg Asia Italy, Greece, Spain, Portugal, MaltaAustralia, New Zealand Japan Sweden, Finland, NorwayIcon Description About this GuideConventions Convention Description Related Documentation1Basic TR-in-FE System Introduction2Larger-Scale TR-in-FE System Safety Precautions Hardware InstallationUnpack and inspect the NIC Installation RequirementsInstallation Instructions Insert the 3C395 NIC in a PCI slot Remove the computer coverTurn on the PC and check the NIC LEDs 2Connecting the CableBefore You Install Software Before You Install SoftwarePage Obtaining the Latest Drivers Installing the NetWare Server DriverAt the console prompt, enter NetWareAt the following prompts, make these selections Installing the Windows NT DriverWindows NT 4CHAPTER 3 Software Installation Color Flashing Steady Off TroubleshootingLEDs Test Description DOS Diagnostic TestsAbout the Conﬁguration and Diagnostic Program To start the tests, press Enter Boot the PC under DOSRunning Group 1 Tests From the Test menu, select Run TestsRunning the Group 3 Test Getting Help If a Test Fails Changing the Test SetupSymptom Tip Further TestingSymptom Tip Page Option Description Default Available Settings ConfigurationSelect options and select settings Changing Conﬁguration SettingsFrom the Install menu, select a NIC as follows Changing the Windows NT Registry To save settings, select OKWhen all changes are complete, exit the program Page Specifications Figure A-1 shows the RJ-45 connector pin assignments RJ-45 Connector Pin AssignmentsWorld Wide Web Site Online Technical Services3Com Bulletin Board Service 408 654 3ComFacts Automated Fax ServiceAccess by Analog Modem Access by Digital ModemPress Return to see the 3ComForum main menu 3ComForum on CompuServe Online ServiceSupport from Your Network Supplier Log on to your CompuServe accountSupport from 3Com 3Com Mediterraneo Regional Sales Office Telephone Number 3Com GmbH3Com Iberia 3Com Latin AmericaCountry Telephone Number Fax Number Returning Products for RepairNumbers IndexURL B-1 3Com Corporation Limited Warranty FCC Class B Statement FCC Declaration of Conformity