1180 Cpu - Lenovo T420 Maintenance Manual

1180 CPU

For access, remove these FRUs in order:
• "1010 Battery pack" on page 65
• "1020 ExpressCard blank bezel" on page 66
• "1050 DIMM slot cover" on page 71
• "1070 PCI Express Mini Card for wireless WAN" on page 73
• "1080 Keyboard" on page 75
• "1110 PCI Express Mini Card for wireless LAN" on page 84
• "1120 Keyboard bezel assembly, FPC cable, and Bluethooth daughter card (BDC-2.1)" on page 86
• "1150 Speaker assembly" on page 94
• "1160 LCD unit" on page 96
• "1170 Fan assembly" on page 101
Attention: The CPU is extremely sensitive. When you service the CPU, avoid any kind of rough handling.
Table 28. Removal steps of CPU
Rotate the head of the screw in the direction shown by arrow
After that peel the mylar off from the CPU as shown by arrow
When installing: Make sure that the mylar is attached to the CPU. Place the CPU on the CPU socket, and then
rotate the head of the screw in the direction shown by arrow
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ThinkPad T420 and T420i Hardware Maintenance Manual
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4
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to release the lock, and then remove the CPU
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to secure the CPU.
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