Page 50 of 362 Replacing equipment553-3001-520 Standard 16.00 April 20009 Pull the upper locking device away from the faceplate on the card andpress the lower locking device downward and insert the card firmly intothe backplane connector. Press the upper locking device firmly againstthe faceplate and press the lower locking device upwards to latch the cardinside the module.10 Set the ENB/DIS switch on the Fibre Superloop Network card to ENB.The Fibre Superloop Network card automatically starts the self-test.11 Observe the red LED on the front panel during self-test. If it flashes threetimes and stays on, it has passed the test; go on to step 13. If it does notflash three times and then stays on, it has failed the test. Pull the cardpartially out of the module and reinsert it firmly into the module. If theproblem persists, troubleshoot or replace the Fibre Superloop Networkcard.12 Connect the SDI/System Monitor cable and the fibre-optic patchcords tothe faceplate connectors of the replacement Fibre Superloop Networkcard.13 Enable the Fibre Superloop Network card by logging in to the systemterminal, loading the Network and Peripheral Equipment DiagnosticProgram LD 32, and executing ENLL loop, where loop is the actualloop number of the Fibre Superloop Network card.14 Tag the defective card(s) with a description of the problem and preparethem for shipment to your equipment supplier’s repair depot.