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System board
Description Spare part number
System board for use in models without Windows 8 700624-001
System board for use in models with Windows 8 Standard 700624-501
System board for use in models with Windows 8 Professional 700624-601
The system board is located on the right side of the computer (viewed from the rear). It is secured with
ten Torx screws, two of which also secure the removable outside bracket.
To remove the system board:
1. Prepare the computer for disassembly (see
Preparing to disassemble the computer on page 35).
2. Remove the stand (see
Stand on page 37).
3. Remove the access panel (see
Access panel on page 41).
4. Remove the lower rear panel (see
Lower rear panel on page 74).
5. Remove the VESA mounting plate (see
VESA mounting plate on page 84).
6. Remove the memory modules (see
Memory on page 52).
7. Remove the graphics heat sink (see
Graphics heat sink on page 63).
8. Remove the processor heat sink (see
Processor heat sink on page 64).
9. Remove the processor (see
Processor on page 66).
88 Chapter 5 Removal and Replacement Procedures All-in One (AIO) Chassis