Page 140 of 162 Media Card maintenance553-3041-500 Standard 1.00 September 2004Faceplate maintenance display codesThe Media Card maintenance display provides the diagnostic status of thecard during power-up, its operational state when in service, and errorinformation on the functional state of the card.During power-up, the card performs multiple self-tests, including:• internal RAM test• ALU test• address mode test• Boot ROM test, timer test• external RAM testIf any of these tests fail, the card enters a maintenance loop, and no furtherprocessing is possible. A failure message is printed on the display to indicatewhich test failed. For more information and a list of the maintenance displaycodes, see IP Line: Description, Installation, and Operation(553-3001-365).If the maintenance display shows a persistent T:20, indicating a softwarefailure, and this occurs after the card is reset during a software downloadprocedure, call the Nortel Networks technical support for assistance indownloading new software onto the card.If a test fails on the Media Card, F:XX appears on the Hex display for threeseconds after the T:13 (Testing SEEPROM) message. For example, if the8051 co-processor test failed, F:05 is displayed on the Media Card faceplate.If more than one test fails, the message indicates the first failure.
