HP 655 HP 655 Notebook PC - Maintenance and Service Guide - Page 70

System board - e1 1200

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System board NOTE: The system board spare part kit includes the processor and replacement thermal material. Description Spare part number For use on computer models equipped with an AMD E2-1800 processor (1.70-GHz, 1333-MHz, 688304-001 18 W, dual core, UMA graphics subsystem memory) For use on computer models equipped with an AMD E1-1200 processor (1.40-GHz, 1066-MHz, 688303-001 18 W, dual core, UMA graphics subsystem memory) For use on computer models equipped with an AMD E-300 processor (1.30-GHz, 1066-MHz, 18 688305-001 W, dual core, UMA graphics subsystem memory) 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 battery (see Battery on page 35), and then remove the following components: a. Memory module/wireless module compartment cover (see Memory module on page 36) b. WLAN module (see WLAN module on page 37) c. Keyboard (see Keyboard on page 39) d. Optical drive (see Optical drive on page 43) e. Hard drive (see Hard drive on page 45) f. Top cover (see Top cover on page 49) 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 36) ● RTC battery (see RTC battery on page 48) ● Fan/heat sink assembly (see Fan/heat sink assembly on page 64) 62 Chapter 4 Removal and replacement procedures

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System board
NOTE:
The system board spare part kit includes the processor and replacement thermal material.
Description
Spare part number
For use on computer models equipped with an AMD E2-1800 processor (1.70-GHz, 1333-MHz,
18 W, dual core, UMA graphics subsystem memory)
688304-001
For use on computer models equipped with an AMD E1-1200 processor (1.40-GHz, 1066-MHz,
18 W, dual core, UMA graphics subsystem memory)
688303-001
For use on computer models equipped with an AMD E-300 processor (1.30-GHz, 1066-MHz, 18
W, dual core, UMA graphics subsystem memory)
688305-001
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 battery (see
Battery
on page
35
), and then remove the following components:
a.
Memory module/wireless module compartment cover (see
Memory module
on page
36
)
b.
WLAN module (see
WLAN module
on page
37
)
c.
Keyboard (see
Keyboard
on page
39
)
d.
Optical drive (see
Optical drive
on page
43
)
e.
Hard drive (see
Hard drive
on page
45
)
f.
Top cover (see
Top cover
on page
49
)
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
36
)
●
RTC battery (see
RTC battery
on page
48
)
●
Fan/heat sink assembly (see
Fan/heat sink assembly
on page
64
)
62
Chapter 4
Removal and replacement procedures