106 Replacing Modules TB9100/P25 CG/P25 TAG Installation and Operation Manual© Tait Limited March 20147.7 Replacing the Front Panel FansUnless otherwise indicated, the following instructions refer to Figure 7.1 onpage 108.Removal 1. If you have not already done so, carry out the instructions in “Pre-liminary Disassembly” on page 96.2. PA Fana. Remove the four screws labeled 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 labeled e and remove the PMU fan/ductassembly.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 labeled e.d. Refit the PA fan as described below.4. PA Fana. Plug the power wires into the fan contact board c and route thewires around the PA fan opening j.b. Refit the PA fan/duct assembly onto its mounting bosses. Notethat the two inner mounting tabs 1) fit over the inner tabs of thePMU fan. Ensure that all the power wires are secured under theretaining hooks 1! and are not crimped.c. Refit the fours screws labeled b.5. Carry out the instructions in “Final Reassembly” on page 115.
