94 Replacing Modules TB8100 Installation and Operation Manual© Tait Electronics Limited June 2005Note If you need to remove any front panel cables, simply pull the frontof the cable retaining clip down and then slide it out from the sub-rack until it reaches the end of its travel.3. Carry out the instructions in “Final Reassembly” on page 101.6.7 Replacing the Front Panel FansUnless otherwise indicated, the following instructions refer to Figure 6.1 onpage 96.Removal 1. If you have not already done so, carry out the instructions in“Preliminary Disassembly” on page 88.2. PA Fana. Remove the four screws labelled b and remove the duct and fanassembly from the front panel.b. Unplug the fan from the fan contact board c.c. Remove the fours screws holding the fan into the duct d andremove the fan.3. PMU Fana. Remove the PA fan/duct assembly as described above.b. Remove the two screws labelled e and remove the PMU fan/duct assembly.c. Unplug the fan from the fan contact board f.d. Remove the fours screws holding the fan into the duct g andremove the fan.Refitting 1. Fit the replacement fan into the duct with the power wires located inthe slot in the side of the duct h.2. Refit the four screws securing the fan into the duct. Do notovertighten these screws or you will distort the fan body.3. PMU Fana. Refit the PMU fan/duct assembly onto its mounting bosses. Notethat the two inner mounting tabs i fit over the bosses.b. Plug the fan into the fan contact board f and route the wiresaround the PA fan opening j.c. Refit the two screws labelled e.d. Refit the PA fan as described below.
