Tait TB9400 Installation And Operation Manual

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Tait TB9400 Installation And Operation Manual Manual pdf 107 page image

TB9400 Installation and Operation Manual Replacing Modules 107© Tait Limited March 20178.2 Preliminary DisassemblyHot-pluggableModules The reciter, PA and front panel are hot-pluggable and can be removedwithout powering down the whole base station. These modules can also beremoved without disrupting the system control bus communications withthe other modules in the subrack.Notice Before removing a PA, first disconnect the DC input, transmitforward input and transmit reverse output, followed by the RF output.After refitting the PA, reconnect the RF output first, followed by thetransmit forward input, transmit reverse output, and then the DC input.Disconnecting thePower If you want to disconnect the power before working on the base station,follow these steps.Caution Before disconnecting the battery supply leads from thePMU, open the circuit breaker or disconnect the supply leads from thebattery.1. Turn off the AC b and DC c switches at the rear of the PMU.2. Also at the rear of the PMU disconnect the mains d and battery esupply leads, and the auxiliary DC supply lead f (if fitted).b cd e f