HP Compaq Pro 4300, Maintenance And Service Manual

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System Board
NOTE: All system board spare part kits come with replacement thermal material.
Description Spare part number
System board for use in models without Windows 8 676358-001
System board for use in models with Windows 8 Standard 676358-501
System board for use in models with Windows 8 Professional 676358-601
System board for use in models with NetClone 699943-001
1. Prepare the computer for disassembly ( Preparation for Disassembly on page 48 ).
2. Remove the access panel ( Computer Access Panel on page 50 ).
3. When replacing the system board, make sure the following components are removed from the
defective system board and installed on the replacement system board:
●
Memory modules (see Installing Additional Memory on page 54 )
●
Expansion cards ( Removing or Installing an Expansion Card on page 57 )
●
Heat sink ( Heat sink on page 84 )
●
Processor ( Processor on page 87 )
4. Remove the baffle from the chassis ( Baffle on page 80 ).
5. Remove the fan from the chassis ( Front Fan Assembly on page 81 ).
6. Rotate the drive cage to its upright position.
7. Rotate the power supply to its full upright position.
8. Disconnect all data and power cables from the system board.
9. Disconnect the balance of the cables from the system board.
10. Remove the eight screws (1) that secure the system board to the chassis.
System Board 91