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System board
NOTE: The system board spare part kit includes UMA or discrete graphics subsystem memory and
replacement thermal material.
Description Spare part number
For use in Intel HM55 UMA computer models 636370-001
For use in Intel HM65 UMA computer models 636373-001
For use in Intel HM55 discrete, 512 MB computer models 636371-001
For use in Intel HM55 discrete, 1 GB computer models 636372-001
For use in Intel HM65 discrete, 512 MB computer models 636374-001
For use in Intel HM65 discrete, 1 GB computer models 636375-001
For use in AMD UMA computer models 638856-001
For use in AMD discrete, 6470M, 512 MB computer models 638854-001
For use in AMD discrete, 6470M, 1 GB computer models 638855-001
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 modules (see
Memory module on page 52)
●
WLAN module (see
WLAN module on page 50)
Before removing the system board, remove the following components:
1. Battery (see
Battery on page 44)
2. Service access cover (see
Service access cover on page 45)
3. Hard drive (see
Hard drive on page 46)
4. Optical drive (see
Optical drive on page 48)
5. WLAN module (see
WLAN module on page 50)
6. Memory module (see
Memory module on page 52)
7. Keyboard (see
Keyboard on page 53)
8. Top cover (see
Top cover on page 56)
9. USB board (see
USB board on page 63)
10. Display assembly (see
Display assembly on page 65)
11. Power connector (see
Power connector on page 64)
12. TouchPad LED board (see
TouchPad LED board on page 61)
72 Chapter 4 Removal and replacement procedures ENWW