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―○7. MAINTENANCE AND TROUBLESHOOTING7.3 Communication Unit (CU) LED LampsInmarsat FleetBroadbandIPOWERREADYTX1STATUS2 3 4POWER OFF BEFORE INSERTINGOR REMOVING SIM○POWERSIM CARD INSIDEPOWERREADYSTATUS (1 - 4)TXThe communication Unit LED lamps indicate the status of the antenna unit and theCU. Refer to the following table:Communication Unit Lamp StatusLED Lamp Status Status NotePower On Power is On Normal stateOffPower is OffReady On Tracking satellite Normal stateFlashing (1 sec. interval)Detecting satellite signalImmediately afterpower onOff Searching for satellite Immediately afterpower onTx On Transmitting Normal stateOff Not transmitting Normal stateStatus 1 On Modem in communicationunit is operating normallyNormal stateFlashing (1 sec. interval)Flashing (0.2 sec.interval)Problem with the modemModem has significantproblemWarningErrorStatus 2 On HUB in communication unitis operating normallyNormal stateFlashing (1 sec. interval)Flashing (0.2 sec.interval)Problem with one part ofthe HUBHUB has significant problemWarningErrorStatus 3 On Antenna is operating normallyNormal stateFlashing (1 sec. interval)Flashing (0.2 sec.interval)Problem with one part ofthe antennaAntenna has significantproblemWarningError7-3

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