TB9100/P25 CG Installation and Operation Manual Replacing Modules 97© Tait Electronics Limited January 20077.10 Final ReassemblyImportant You must refit the correct type of front panel to yourTB9100 base station. There are several small but importantdifferences between the front panel for a 5W or 50W basestation and the front panel for a 100W base station. Thesedifferences are in the duct for the PA fan and are describedin the following paragraphs.5W or 50W FrontPanel The PA fan duct does not have the cut-outs b required for the 100W PARF and DC cables. The break-off tab c will also still be present and willjam on the system control bus. Do not try to fit this front panel to a 100Wbase station or you will damage these cables and possibly the front panelitself.100W Front Panel Do not fit this front panel to a 5W or 50W base station. The presence ofthe cut-outs and absence of the break-off tab will allow air to escape andreduce the velocity of air directed through the heatsink.1. Before fitting the front panel, ensure that all cables are secured andpositioned correctly so they are clear of the fan ducts (refer toFigure 3.8 on page 52 and “Appendix B – Inter-ModuleConnections” on page 123). Otherwise the panel may not fitproperly, or you may damage the cables.Figure 7.3 Identifying the correct front panelbc100W front panel:the PA fan duct has cut-outsbut no break-off tab5 or 50W front panel:the PA fan duct has the break-off tab but no cut-outs
