NEC m350, P550 manual 16

4.Disconnect Fan connection and remove the CPU Heat sink screws around CPU socket in descending order (3Æ2Æ1), then lift up the CPU heat sink.

M2.5 x 7 Sliver

Fig. 20 CPU Heat Sink

Note: Beware of screws use on the CPU heat sink! Make sure to use the screw size M2.5x7, otherwise it might cause damage to the CPU die. Secure the screw around the CPU socket first before other screws.

5. Use Flat screwdriver to unlock the CPU from the CPU socket and lift up the CPU carefully.

Fig. 21 Unlocking the CPU

NEC VERSA M350/P550 Disassembly Manual Page 16