HP ProBook 4545s HP ProBook 4545s Notebook PC - Maintenance and Service Guide - Page 75

System board, Remove the following components - graphics card

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4. Lift the board and cable straight up out of the computer (4). Reverse this procedure to install the USB board. System board NOTE: All system board spare part kits include replacement thermal material. Description System board for use in models with 1-GB of discrete memory System board for use in models with 2-GB of discrete memory System board for use in models with UMA graphics Spare part number 683598-001 683599-001 683600-001 Before removing the system board, follow these steps: 1. Shut down the computer. If you are unsure whether the computer is off or in Hibernation, turn the computer on, and then shut it down through the operating system. 2. Disconnect all external devices connected to the computer. 3. Disconnect the power from the computer by first unplugging the power cord from the AC outlet, and then unplugging the AC adapter from the computer. 4. Remove the battery (see Battery on page 34). 5. Remove the following components: a. Bottom door (see Bottom door on page 35). b. Hard drive (see Hard drive on page 42). c. Optical drive (see Optical drive on page 39). d. WLAN/Bluetooth combo card (see WLAN/Bluetooth combo card on page 36). Component replacement procedures 67

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4.
Lift the board and cable straight up out of the computer
(4)
.
Reverse this procedure to install the USB board.
System board
NOTE:
All system board spare part kits include replacement thermal material.
Description
Spare part number
System board for use in models with 1-GB of discrete memory
683598-001
System board for use in models with 2-GB of discrete memory
683599-001
System board for use in models with UMA graphics
683600-001
Before removing the system board, follow these steps:
1.
Shut down the computer. If you are unsure whether the computer is off or in Hibernation, turn
the computer on, and then shut it down through the operating system.
2.
Disconnect all external devices connected to the computer.
3.
Disconnect the power from the computer by first unplugging the power cord from the AC outlet,
and then unplugging the AC adapter from the computer.
4.
Remove the battery (see
Battery
on page
34
).
5.
Remove the following components:
a.
Bottom door (see
Bottom door
on page
35
).
b.
Hard drive (see
Hard drive
on page
42
).
c.
Optical drive (see
Optical drive
on page
39
).
d.
WLAN/Bluetooth combo card (see
WLAN/Bluetooth combo card
on page
36
).
Component replacement procedures
67