HP 4320t HP 4320t Mobile Thin Client - Maintenance and Service Guide - Page 65

Heat sink and fan, Remove the heat sink

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Heat sink and fan NOTE: The heat sink spare part kit includes replacement thermal material. Description Fan Processor heat sink Spare part number 599544-001 599546-001 Before removing the heat sink, follow these steps: 1. Shut down the computer. 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 36). 5. Remove the following components: a. Switch cover (see Switch cover on page 37) b. Keyboard (see Keyboard on page 39) c. Palm rest (see Palm rest on page 48) Remove the heat sink: 1. Position the computer right-side up with the front toward you. 2. Remove the five PM2.5×3.0 screws (1) that secure the heat shield to the top cover. 3. Remove the two PM2.5×5.0 screws (2) that secure the heat shield to the top cover. Component replacement procedures 57

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Heat sink and fan
NOTE:
The heat sink spare part kit includes replacement thermal material.
Description
Spare part number
Fan
599544-001
Processor heat sink
599546-001
Before removing the heat sink, follow these steps:
1.
Shut down the computer.
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
36
).
5.
Remove the following components:
a.
Switch cover (see
Switch cover
on page
37
)
b.
Keyboard (see
Keyboard
on page
39
)
c.
Palm rest (see
Palm rest
on page
48
)
Remove the heat sink:
1.
Position the computer right-side up with the front toward you.
2.
Remove the five PM2.5×3.0 screws
(1)
that secure the heat shield to the top cover.
3.
Remove the two PM2.5×5.0 screws
(2)
that secure the heat shield to the top cover.
Component replacement procedures
57