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System board
Description | Spare part number |
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System board for use in models with discrete graphics subsystem | |
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System board for use in models with Unified Memory Architecture (UMA) graphics subsystem | |
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System board for use in models with discrete graphics subsystem and HDMI card reader | |
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System board for use in models with UMA graphics subsystem and HDMI card reader | |
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System board for use in models with UMA graphics subsystem memory, Intel® GL40 chipset, and | |
HDMI card reader |
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For use in models with UMA graphics subsystem memory, | |
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For use in models with DSC HD5430 MDM CR | |
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For use in models with DSC HD5430 | |
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For use in models with UMA graphics subsystem memory, | |
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For use in models with HD545V DSC | |
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For use in models with HD545V DSC CR | |
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For use in models with discrete graphics subsystem HM55 HD5430/1G | |
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For use in models with discrete graphics subsystem HDMI HD5430/1G | |
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For use in models with discrete graphics subsystem with HM55 HD545V | |
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For use in models with discrete graphics subsystem with HM55 HDMI HD545V | |
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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 85)
●Memory modules (see Memory module on page 54)
●WLAN module (see WLAN module on page 51)
●Modem module (see Modem module on page 65) 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.
80 Chapter 4 Removal and replacement procedures