Black Box May-95, ME758C-RJ45 manual Troubleshooting, Calling Your Supplier, Shipping and Packaging

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MULTI-FUNCTION LD CARD

6.Troubleshooting

6.1Calling Your Supplier

If you determine that your Multi-Function LD Card is malfunctioning, do not attempt to alter or repair it. Contact your supplier. The problem might be solvable over the phone.

Before you do, make a record of the history of the problem. Your supplier will be able to provide more efficient and accurate assistance if you have a complete description, including:

•The nature and duration of the problem.

•When the problem occurs.

•The components involved in the problem.

•Any particular application that, when used, appears to create the problem or make it worse.

6.2 Shipping and Packaging

If you need to transport or ship your Multi-Function LD Card:

•Package it carefully. We recommend that you use the original container.

•Before you ship a unit for repair or return, contact your supplier to get a Return Authorization (RA) number, and make sure you include everything you received with the unit when you ship it.

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Contents Multi-Function LD Cards FCC Statements MULTI-FUNCTION LD Card NOM Statements Contents Specifications Diagnostics IndicatorsConnectors Temperature PowerWeight FuseIntroduction FeaturesOverview Introduction Main-module switches Setting the Switches on the Main ModuleSwitch S1 Summary On and OFF settings of the DIP switchesS1 Positions 5 and 6 Clock Source S1 Positions 1 through 4 Data-Rate SettingS1 Position 7 Protocol S2 Position 2 2-Wire vs -Wire Operation Switch S2 SummaryS1 Position 8 Carrier-Control Method S2 Positions 4 and 5 RTS/CTS Delay S2 Position 3 V.52 and V.54 Diagnostic TestingS2-6 Signaling-Rate Range S2-7 and S2-8 Word LengthS3-1 and S3-2 Input Impedance Switch S3 SummaryS3-4 Mode Selection Recommended Impedance SettingsS3-5 DTE RS-232 Initiation of Local Loopback Test S3-6 DTE RS-232 Initiation of Remote Loopback TestS3-7 and S3-8 Antistream Control Setting the Jumpers on the Interface ModuleFour interface modules Jumper locations Line Interface Line Shield Connection to Frame Ground JB2 Summary of Interface-Module Jumper FunctionsJB5 Serial Interface Signal Ground and Frame Ground JB4MicroRacks An Overview InstallationMicroRacks’ Power Supply Installing the Multi-Function LD Card in the MicroRack Pinout of the RS-232 Interface RS-232 Serial Cables and ConnectorsPinout of the 10-Pin RJ Interface Modem-to-Modem Line Cables and Connectors AT&T standard modular color codes Line-Cable PinoutsMultipoint Applications Two-pair star wiring for host and slave CardsStatus LEDs Operation and DiagnosticsRTS and CD Indicators Diagnostic Testing Using the Error LED Power-Up V.54 and V.52 Diagnostic Tests Remote Digital Loopback RDL Using the V.52 Bert Test Independently Calling Your Supplier TroubleshootingShipping and Packaging Appendix Cable Recommendations Wire Gauge Capacitance ResistanceMULTI-FUNCTION LD Card Copyright 1995. Black Box Corporation. All rights reserved