164 Part H: Diagnosing MB8100-00-00-806 © TEL 2003Power Management Unit TestsThe Service Kit lets you test aspects of the PMU and monitor additional detailsof its operation.Control TestsThe Control Tests form lets you simulate a mains failure. You can also checkthat the fan, the fault LED, and the auxiliary output are working.Simulating Mains FailureThe Control Tests form lets you simulate a mains failure so that you can test theBSS’s battery backup and the PMU’s DC-DC converter.Important: This test affects any other base station in the BSS.Important: This test will shut the whole BSS down if there is nobackup power supply.To simulate mains failure1. Select Diagnose > Power Management > Control Tests.2. Click Start Test at the bottom of the Control Tests form.3. Click Mains Failure Test.4. Check that power to the PA and the Reciter/control panel stays on.Testing the FanYou can ask the base station to turn the PMU fan on and off; this tests the fanand its control circuitry.