HP 2000-2b30DX HP 2000 Notebook PC Compaq Presario CQ58 Notebook PC Compaq Pre - Page 89

Keyboard see, Top cover see

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Description System board for use only with computer models equipped with an Intel Pentium or Celeron processor and a graphics subsystem with UMA video memory ● For use in models without Windows 8 ● For use in models with Windows 8 Standard ● For use in models with Windows 8 Professional 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) ● For use in models without Windows 8 ● For use in models with Windows 8 Standard ● For use in models with Windows 8 Professional Thermal pad (for use with all models) Spare part number 685768-001 685768-501 685768-601 685783-001 685783-501 685783-601 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 34). 5. Remove the following components: ● WLAN module (see WLAN module on page 42) ● Hard drive (see Hard drive on page 47) ● Keyboard (see Keyboard on page 53) ● Top cover (see Top cover on page 57) ● Speakers (see Speakers on page 65) ● USB board (see USB board on page 67) ● Power connector cable (see Power connector cable on page 69) 6. Disconnect the display cable from the system board (see Display assembly on page 71). NOTE: 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 45) ● RTC battery (see RTC battery on page 50) 82 Chapter 4 Removal and replacement procedures

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Description
Spare part number
System board for use only with computer models equipped with an Intel Pentium or Celeron
processor and a graphics subsystem with UMA video memory
●
For use in models without Windows 8
685768-001
●
For use in models with Windows 8 Standard
685768-501
●
For use in models with Windows 8 Professional
685768-601
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)
●
For use in models without Windows 8
685783-001
●
For use in models with Windows 8 Standard
685783-501
●
For use in models with Windows 8 Professional
685783-601
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
34
).
5.
Remove the following components:
●
WLAN module (see
WLAN module
on page
42
)
●
Hard drive (see
Hard drive
on page
47
)
●
Keyboard (see
Keyboard
on page
53
)
●
Top cover (see
Top cover
on page
57
)
●
Speakers (see
Speakers
on page
65
)
●
USB board (see
USB board
on page
67
)
●
Power connector cable (see
Power connector cable
on page
69
)
6.
Disconnect the display cable from the system board (see
Display assembly
on page
71
).
NOTE:
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
45
)
●
RTC battery (see
RTC battery
on page
50
)
82
Chapter 4
Removal and replacement procedures