NEC EXPRESS5800/120Ef Service Manual page 54

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Exchange of CPU
The cool sheet sticks between the heat sink and CPU.
When a heat sink is removed by CPU exchange and mother board exchange, it
exchanges for a surely new cool sheet.
Refer to the below-mentioned "how to attach cool sheet."
a. Removal of Heat sink
b. The lever of CPU socket is caused completely.
CPU is removed.
c. New CPU is inserted in a socket.
A lever is pushed down and CPU is fixed.
48
Lever
A lever is pushed down where CPU
is pushed with a finger.

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