HP ProBook 6550b HP ProBook 6455b, 6555b, 6450b,and 6550b Notebook PCs - Maint - Page 111

Switch cover NOTE: The switch cover spare part kit includes the capacitive board and cable. Description For use only on computer models equipped with a 15.6-in display assembly For use only on computer models equipped with a 14.0-in display assembly Spare part number 613342-001 613341-001 Before removing the switch cover, follow these steps: 1. Shut down the computer. If you are unsure whether the computer is off or in Hibernation, turn the computer on, and then shut it down through the operating system. 2. Disconnect all external devices connected to the computer. 3. Disconnect the power from the computer by first unplugging the power cord from the AC outlet and then unplugging the AC adapter from the computer. 4. Remove the battery (see Battery on page 79). 5. Remove the keyboard (see Keyboard on page 96). Remove the switch cover: 1. Turn the computer upside down, with the front toward you. 2. Remove the three Phillips PM2.0×3.0 screws that secure the switch cover to the computer. 3. Turn the computer display-side up, with the front toward you. 4. Open the computer as far as possible. 5. Release the ZIF connector to which the LED board cable (1) is attached, and then disconnect the LED board cable from the system board. Component replacement procedures 103