Installing System Components 1573 Slide the module assembly forward until the metal guides engage into theslots on the PSU bracket and ensure that the module assembly is fullyseated into the front power distribution board.NOTE: Make sure the air baffle is properly seated and the power cable is neatlytucked into place. See Figure 3-10.4 Replace the screws securing the module assembly to the sled tray. SeeFigure 3-10.Removing the PSU ModuleCAUTION: Many repairs may only be done by a certified service technician. Youshould only perform troubleshooting and simple repairs as authorized in yourproduct documentation, or as directed by the online or telephone service andsupport team. Damage due to servicing that is not authorized is not covered bywarranty. Read and follow the safety instructions that came with the product.NOTE: In addition to supplying power to the system, the PSU modules also haveinternal fans that provide thermal cooling for the PSU modules in the power sleds. APSU module must be replaced if an internal fan failure occurs.The installation and removal procedures of a power supply module on aPSU1/3 and PSU2/4 module assembly are similar.1 Remove the power sled. See "Removing a Power Sled" on page 150.2 Remove the PSU module assembly containing the failed power supply. See"Removing the PSU1/3 Module Assembly" on page 153 or "Removing thePSU2/4 Module Assembly" on page 155.3 Pull open the handle on the PSU module. See Figure 3-11.4 Press down on the release lever and pull the module out of the bracket. SeeFigure 3-11.
