4. Remove the power supply or power supplies from the server.5. Rotate the power-supply cage out of the way.6. Disconnect the power-supply docking cable from the system board.7. Using a Phillips screwdriver, remove the three screws that secure thedocking-cable connector to the chassis and remove the docking cable and itscage from the server.To install a new power-supply docking cable, complete the following steps:1. Connect the power-supply docking cable to the system board.2. Position the power-supply docking cable cage inside the server, aligning thescrew holes with the holes in the chassis.3. Secure the cage in the chassis using the three screws.4. Lower the power-supply cage into place.5. Install the power supply; then, connect the power cord and all external cables.6. Install and lock the left-side cover.USB cable assemblyTo remove the USB cable assembly from the server, complete the following steps:1. Read the safety information that begins on page vii and “Handlingstatic-sensitive devices” on page 57.2. Turn off the server and peripheral devices; then, disconnect the power cordsand all external cables as necessary to replace the device.3. Unlock and remove the left-side cover and open the bezel.4. Disconnect the USB cable from the system board.5. Press down on the release latch on the top of the USB mounting bracket androtate the top of the mounting bracket away from the server.6. Lift the mounting bracket out and away from the server while you pull the USBcable through the hole.To replace the USB cable in the USB mounting bracket, complete the followingsteps:74 IBM System x3500 Type 7977: Problem Determination and Service Guide
