Lenovo T420 - Manual (Page 103)

1170 Fan assembly
For access, remove these FRUs in order:
•
“1010 Battery pack” on page 63
• “1020 ExpressCard blank bezel” on page 64
• “1050 DIMM slot cover” on page 69
• “1070 PCI Express Mini Card for wireless WAN” on page 71
• “1080 Keyboard” on page 73
• “1110 PCI Express Mini Card for wireless LAN” on page 81
• “1120 Keyboard bezel assembly, FPC cable, and Bluethooth daughter card” on page 83
• “1150 Speaker assembly” on page 91
• “1160 LCD unit” on page 93
Removal steps of fan assembly
Note: Loosen the screws 1a to 1d in order, but do not remove them.
For Discrete Graphics models:
1a
2
1d
1c
1b
For Integreted Graphics models:
Chapter 8 . Removing and replacing a FRU 97