HP 608769-BG1 User Manual

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System board
NOTE:
The system board spare part kit includes replacement thermal material.
Description
Spare part number
Intel Atom™ N450 1.66-GHz processor with 512-KB level 2 cache, 667-MHz FSB
607740-001
Intel Atom™ N470 1.83-GHz processor with 512-KB level 2 cache, 667-MHz FSB, 6.5W TDP
607741-001
Intel Atom™ N455 1.66-GHz processor with 512-KB level 2 cache, 667-MHz FSB
618873-001
Intel Atom™ N475 1.83-GHz processor with 512-KB level 2 cache, 667-MHz FSB, 6.5 TDP
618874-001
Intel Atom™ N450 1.66-GHz processor with 512-KB level 2 cache, 667-MHz FSB without WWAN
module
621300-001
Intel Atom™ N470 1.83-GHz processor with 512-KB level 2 cache, 667-MHz FSB, 6.5W TDP
without WWAN module
621301-001
Intel Atom™ N455 1.66-GHz processor with 512-KB level 2 cache, 667-MHz FSB without WWAN
module
621302-001
Intel Atom™ N475 1.83-GHz processor with 512-KB level 2 cache, 667-MHz FSB, 6.5 TDP without
WWAN module
621303-001
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 
5.
Remove the service cover (see 
6.
Disconnect the hard drive cable from the system board (see 
).
7.
Disconnect the WWAN antenna cables from the WWAN module (see 
8.
Disconnect the WLAN antenna cables from the WLAN module (see 
).
9.
Remove the keyboard (see 
10.
Remove the top cover (see 
).
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:
)
68
Chapter 4   Removal and replacement procedures