HP ProBook 6540b HP ProBook 6545b, 6540b, 6445b and 6440b Notebook PC - Mainte - Page 107

until it rests at an angle., Release the heat sink

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Removal and replacement procedures Remove the heat sink: 1. Following the 1, 2, 3, 4 sequence stamped into the heat sink, loosen the four Phillips PM2.5×9.0 captive screws 1 that secure the heat sink to the system board. ✎ Due to the adhesive quality of the thermal material located between the heat sink and system board components, it may be necessary to move the heat sink from side to side to detach it. 2. Lift the right side of the heat sink 2 until it rests at an angle. 3. Release the heat sink 3 by sliding it up and to the right at an angle. 4. Remove the heat sink. 4-38 Maintenance and Service Guide

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4–38
Maintenance and Service Guide
Removal and replacement procedures
Remove the heat sink:
1. Following the 1, 2, 3, 4 sequence stamped into the heat sink, loosen the four Phillips PM2.5×9.0 captive
screws
1
that secure the heat sink to the system board.
✎
Due to the adhesive quality of the thermal material located between the heat sink and system board
components, it may be necessary to move the heat sink from side to side to detach it.
2. Lift the right side of the heat sink
2
until it rests at an angle.
3. Release the heat sink
3
by sliding it up and to the right at an angle.
4. Remove the heat sink.