HP ProDesk 400 G5 Micro Maintenance and Service Guide - Page 55

System board, connector board see

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System board NOTE: The system board spare part kit includes replacement thermal material. Follow these steps to remove the system board: 1. Prepare the computer for disassembly (see Preparation for disassembly on page 31). 2. Remove the access panel (see Access panel on page 32), and then remove the following components: a. Front bezel (see Front bezel on page 35) b. WLAN module (see WLAN module on page 41) c. Solid-state drive (see Solid-state drive on page 42) d. Drive cage (see Drive cage on page 36) e. Fan-sink (see Fan-sink on page 46) NOTE: When replacing the system board, be sure that the processor (see Processor on page 47) and connector board (see Connector board on page 51) are removed from the defective system board and installed on the replacement system board. 3. Disconnect the following cables from the system board: (1) Fan cable (2) Power supply P1 cable (3) Drive data cables (three locations) (4) Speaker cable (5) Power supply P3 cable (6) Power supply P2 cable (7) Drive power cable System board 49

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System board
NOTE:
The system board spare part kit includes replacement thermal material.
Follow these steps to remove the system board:
1.
Prepare the computer for disassembly (see
Preparation for disassembly
on page
31
).
2.
Remove the access panel (see
Access panel
on page
32
), and then remove the following components:
a.
Front bezel (see
Front bezel
on page
35
)
b.
WLAN module (see
WLAN module
on page
41
)
c.
Solid-state drive (see
Solid-state drive
on page
42
)
d.
Drive cage (see
Drive cage
on page
36
)
e.
Fan-sink (see
Fan-sink
on page
46
)
NOTE:
When replacing the system board, be sure that the processor (see
Processor
on page
47
) and
connector board (see
Connector board
on page
51
) are removed from the defective system board and
installed on the replacement system board.
3.
Disconnect the following cables from the system board:
(1)
Fan cable
(2)
Power supply P1 cable
(3)
Drive data cables (three locations)
(4)
Speaker cable
(5)
Power supply P3 cable
(6)
Power supply P2 cable
(7)
Drive power cable
System board
49