Maintenance and Service Guide

System board
NOTE: The system board spare part kit includes replacement thermal material.
Description Spare part number
System board equipped with an Intel i5-4200U 1.60-GHz processor (turbo up to 2.60-GHz; dual
core, ULV, 15 W), a graphics subsystem with UMA memory, and the Windows 8 Standard
operating system
737670-501
System board equipped with an Intel i5-4200U 1.60-GHz processor (turbo up to 2.60-GHz; dual
core, ULV, 15 W), a graphics subsystem with UMA memory, and the Windows 7/Linux
operating system
737670-001
System board equipped with an Intel i3-4010U 1.70-GHz processor (dual core, ULV, 15 W), a
graphics subsystem with UMA memory, and the Windows 8 Standard operating system
728077-501
System board equipped with an Intel i3-4010U 1.70-GHz processor (dual core, ULV, 15 W), a
graphics subsystem with UMA memory, and the Windows 7/Linux operating system
728077-001
Before removing the system board, follow these steps:
1. Turn off 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 the power from the computer by unplugging the power cord from the computer.
3. Disconnect all external devices from the computer.
4. Remove the bottom cover (see
Bottom cover on page 23).
5. Remove the rear cover (see
Rear cover on page 26).
6. Disconnect the battery cable (see
Hard drive on page 27).
7. Remove the hard drive (see
Hard drive on page 27).
8. Remove the cover bracket (see
X-axis capacitor board on page 33).
9. Remove the display stand recess (see
Display stand recess on page 41).
10. Remove the fan (see
Fan on page 53).
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:
●
Memory module (see Memory module on page 29)
●
WLAN module (see
WLAN module on page 49)
●
Heat sink (see
Heat sink on page 56)
54 Chapter 4 Removal and replacement procedures