HP ENVY 15t-3200 HP ENVY 15 - Maintenance and Service Guide - Page 80
System board, defective system board and installed on the replacement system board
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System board NOTE: The system board spare part kit includes replacement thermal material. Replacement thermal material is also available in the Thermal Material Kit, spare part number 668848-001. NOTE: The system board spare part kit includes 1 GB of discrete graphics subsystem memory. Description Equipped with the 7750M chipset for use in all countries and regions except the People's Republic of China Equipped with the 7750M chipset for use only in the People's Republic of China Equipped with the 7670M chipset Spare part number 679814-001 694500-001 668847-001 Before removing the system board, 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 35), and then remove the following components: a. Hard drive (see Hard drive on page 37) b. Wireless audio module (see Wireless audio module on page 40) c. WLAN module (see WLAN module on page 42) d. Top cover (see Top cover on page 47) e. Top speakers (see Top speakers on page 69) When replacing the system board, be sure that the following components are removed from the defective system board and installed on the replacement system board: ● RTC battery (see RTC battery on page 45) ● Memory module (see Memory module on page 46) ● Fan/heat sink assembly (see Fan/heat sink assembly on page 76) ● Processor (see Processor on page 80) Remove the system board: 1. Close the computer. 2. Turn the computer upside down, with the front toward you. 72 Chapter 4 Removal and replacement procedures ENWW