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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 639521-001
For use in Intel HM65 UMA computer models 639522-001
For use in Intel HM55 discrete, 512 MB, computer models 639523-001
For use in Intel HM55 discrete, 1 GB, computer models 639524-001
For use in Intel HM65 discrete, 512 MB, computer models 639525-001
For use in Intel HM65 discrete, 1 GB, computer models 639526-001
For use in AMD UMA computer models 640893-001
For use in AMD E350 UMA computer models 646738-001
For use in AMD A60M UMA computer models 649288-001
For use in Intel HM55 i3-370M UMA computer models. 653087-001
For use in AMD E450 UMA computer models 657146-001
For use in Intel HM65 UMA 1.1 computer models 657459-001
For use in Intel HM65 discrete 512 MB computer models 657461-001
For use in Intel HM65 discrete 1 GB computer models 657462-001
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 49)
●
WLAN module (see
WLAN module on page 47)
Before removing the system board, remove the following components:
1. Battery (see
Battery on page 41)
2. Service door (see
Service door on page 42)
3. Hard drive (see
Hard drive on page 43)
4. Optical drive (see
Optical drive on page 45)
5. WLAN module (see
WLAN module on page 47)
6.
Memory module (see
Memory module on page 49)
7. Keyboard (see
Keyboard on page 51)
8. Top cover (see
Top cover on page 53)
9. USB board (see
USB board on page 60)
Component replacement procedures
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