Hardware Replacement 9-35Octel Overture 200/300 Serenade 3.0PB60014–011. Unlock and open the door of the cabinet.2. Put on an antistatic wrist strap. Connect it to an unpainted portion of the cabinet.3. Using a flat-bladed screwdriver, loosen the two captive screws on the front flange of the fan tray.4. Move the floppy-drive signal cable to the right, so that it will not interfere with the removal of thefan tray. Do not disconnect the floppy-drive cable. There is enough relief in the cable to allow you toremove the fan tray without disconnecting the cable.5. Grip the front edge of the fan tray and pull it straight out of the cabinet.Caution!When the fan tray is removed, do not operate themessage server for more 4 four minutes.Installing the Fan Tray in the Octel Overture 300To install the fan tray, use the following procedures:1. Place the fan tray edges into the two U-channels on either side of the cabinet, under the card cage.The floppy-disk signal cable should be to the right of the fan tray.2. Slide the fan tray into the message server, so the the connector on the back of the assembly matesfully with the connector in the cabinet. This is accomplished when the front flange of the fan trayreaches or very nearly reaches the two small angle brackets on either side of the cabinet.3. Using a flat-bladed screwdriver, tighten the two captive screws attached to front flange of the fantray.4. If necessary, turn ON the message server and verify that all four fans are spinning.Air Filter CleaningAir filters can be cleaned and reused indefinitely. The following sections explain how to remove, clean,and reinstall an air filter. The Octel Overture 200/300 should not be operated with the door open or the air filter removed formore than 1 hour.Removing the Air FilterTo remove the air filter, use the following procedures:1. Unlock and open the door of the cabinet.2. On the back of the door, free the corners, then the top and bottom edges of the air filter from thevelcro hold-downs.3. Slide the air filter out of the door.