Lenovo L421 Laptop User Manual


 
Table 16. Removal steps of fan assembly (continued)
For models with a discrete fan assembly:
b
a
For models with an integrated fan assembly:
b
1080 CPU
For access, remove these FRUs in order:
“1010 Battery pack” on page 57
“1040 Thermal cover” on page 61
“1070 Fan assembly” on page 66
Attention: The CPU is extremely sensitive. When you service the CPU, avoid any kind of rough handling.
Table 17. Removal steps of CPU
Rotate the head of the screw in the direction shown by arrow 1 to release the lock; then remove the CPU 2 .
68 Hardware Maintenance Manual