HP mt245 mt245 Mobile Thin Client Maintenance and Service Guide - Page 49
Heat sink assembly, Disconnect the power from the computer
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Heat sink assembly NOTE: The heat sink assembly spare part kit includes replacement thermal materials. Description Heat sink Spare part number 813507-001 NOTE: To properly ventilate the computer, allow at least 7.6 cm (3.0 in) of clearance on the left side of the computer. The computer uses an electric fan for ventilation. The fan is controlled by a temperature sensor and is designed to turn on automatically when high temperature conditions exist. These conditions are affected by high external temperatures, system power consumption, power management/battery conservation configurations, battery fast charging, and software requirements. Exhaust air is displaced through the ventilation grill located on the left side of the computer. Before removing the heat sink assembly, 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 24). 5. Remove the bottom cover (see Bottom cover on page 25). To remove the heat sink assembly: 1. In the order stamped on the heat sink, loosen the screws (1) that secure the heat sink to the system board. Component replacement procedures 41