System board

NOTE: The system board spare part kit includes replacement thermal material.

You do NOT have to remove the heat sink to remove the system board. You do have to remove the fan to remove the system board.

Description

Spare part number

 

 

System board with Intel Core i7-4500U processor and 8-GB system memory for use in models with

743849-001

non-Windows 8 operating systems

 

 

 

System board with Intel Core i7-4500U processor and 8-GB system memory for use in models with

743849-501

Windows 8 Standard operating systems

 

 

 

System board with Intel Core i7-4500U processor and 8-GB system memory for use in models with

743849-601

Windows 8 Professional operating systems

 

 

 

System board with Intel Core i5-4200U processor and 4-GB system memory for use in models with

743850-001

non-Windows 8 operating systems

 

 

 

System board with Intel Core i5-4200U processor and 4-GB system memory for use in models with

743850-501

Windows 8 Standard operating systems

 

 

 

System board with Intel Core i5-4200U processor and 4-GB system memory for use in models with

743850-601

Windows 8 Professional operating systems

 

 

 

System board with Intel Core i5-4200U processor and 8-GB system memory for use in models with

743851-001

non-Windows 8 operating systems

 

 

 

System board with Intel Core i5-4200U processor and 8-GB system memory for use in models with

743851-501

Windows 8 Standard operating systems

 

 

 

System board with Intel Core i5-4200U processor and 8-GB system memory for use in models with

743851-61

Windows 8 Professional operating systems

 

 

 

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 following components:

a.Bottom cover (see Bottom cover on page 29)

b.Battery (see Battery on page 46)

c.WLAN module (see WLAN module on page 32)

d.Fan (see Fan on page 41)

NOTE: If replacing the system board, be sure to remove the heat sink from the old board and install it on the new board.

48

Chapter 4 Removal and replacement procedures