HP ProBook 455, Руководство по техническому обслуживанию и ремонту

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System board
NOTE: The system board spare part kit includes replacement thermal materials (including a thermal
pad).
Description Spare part number
System board for use only with computer models equipped with an AMD E2-1800 processor 688853-001
System board for use only with computer models equipped with an AMD E1-1200 processor 688852-001
System board for use only with computer models equipped with an AMD E300 processor 688851-001
System board for use only with computer models equipped with an Intel Core i5 or i3 processor and
a graphics subsystem with discrete video memory (includes replacement thermal materials) 694693-001
System board for use only with computer models equipped with an Intel Pentium or Celeron
processor and a graphics subsystem with discrete video memory (includes replacement thermal
materials) 694694-001
System board for use only with computer models equipped with an Intel Core i5 or i3 processor and
a graphics subsystem with UMA video memory 685761-001
System board for use only with computer models equipped with an Intel Core i5 or i3 processor and
a graphics subsystem with UMA video memory (RCTO system board for use in Brazil and India
only) 685107-001
System board for use only with computer models equipped with an Intel Pentium or Celeron
processor and a graphics subsystem with UMA video memory 685768-001
System board for use only with computer models equipped with an Intel Pentium or Celeron
processor and a graphics subsystem with UMA video memory (RCTO system board for use in
Brazil and India only) 685783-001
Thermal pad (for use with all models) 651046-001
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 40 ).
5. Remove the following components:
●
WLAN module (see WLAN module on page 48 )
●
Hard drive (see Hard drive on page 52 )
●
Keyboard (see Keyboard on page 58 )
●
Top cover (see Top cover on page 61 )
●
Speakers (see Speakers on page 69 )
84 Chapter 4 Removal and replacement procedures