HP Pro 3520 PC Maintenance & Service Guide HP Pro 3520 All-in-One Business - Page 82

System Board

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System Board Description System board for use in models with Windows 8 with no Digital Product Key (DPK) System board for use in models with Windows 8 Standard System board for use in models with Windows 8 Professional Thermal pads, PCH Thermal pads, Vagx Thermal pads, Voore Thermal pads, SODIMM Spare part number 703643-001 703643-501 703643-601 709842-001 709843-001 709844-001 709845-001 The system board is secured with nine screws. To remove the system board: 1. Prepare the computer for disassembly (see Preparing to Disassemble the Computer on page 40). 2. Remove the rear cover (see Rear Cover on page 41). 3. Remove the system board cover (see System Board Cover on page 61). 4. Remove the memory module (see Memory on page 46). 5. Remove the WLAN module (see WLAN Module on page 71). 6. Remove the heat sink (Heat sink/thermal module on page 65). 7. Remove the processor (Processor on page 67). 8. Remove the webcam module from the front bezel (Webcam Module on page 58). 9. Disconnect all cables from the system board, noting their location for reinstallation. 74 Chapter 7 Removal and Replacement Procedures All-in One (AIO) Chassis

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System Board
Description
Spare part number
System board for use in models with Windows 8 with no Digital Product Key (DPK)
703643-001
System board for use in models with Windows 8 Standard
703643-501
System board for use in models with Windows 8 Professional
703643-601
Thermal pads, PCH
709842-001
Thermal pads, Vagx
709843-001
Thermal pads, Voore
709844-001
Thermal pads, SODIMM
709845-001
The system board is secured with nine screws.
To remove the system board:
1.
Prepare the computer for disassembly (see
Preparing to Disassemble the Computer
on page
40
).
2.
Remove the rear cover (see
Rear Cover
on page
41
).
3.
Remove the system board cover (see
System Board Cover
on page
61
).
4.
Remove the memory module (see
Memory
on page
46
).
5.
Remove the WLAN module (see
WLAN Module
on page
71
).
6.
Remove the heat sink (
Heat sink/thermal module
on page
65
).
7.
Remove the processor (
Processor
on page
67
).
8.
Remove the webcam module from the front bezel (
Webcam Module
on page
58
).
9.
Disconnect all cables from the system board, noting their location for reinstallation.
74
Chapter 7
Removal and Replacement Procedures All-in One (AIO) Chassis