Specifications

Lenovo B50-30/B50-30 Touch/B50-45/B50-70

1140 Fan and heat sink assembly

Foraccess,removetheseFRUsinorder:

• “1010Batterypack”onpage33

• “1020Opticaldrive”onpage34

• “1030Bottomslotcover”onpage36

• “1040Harddiskdrive”onpage37

• “1050DIMM”onpage39

• “1060PCIExpressMiniCardforwirelessLAN/WAN”onpage40

• “1070Keyboard”onpage41

• “1080Keyboardbezel”onpage43

• “1110Ledboard”onpage48

• “1130Systemboard”onpage50

Figure14.Removalstepsoffanandheatsinkassembly

Disconnectthefanconnectorinthedirectionbyarrow .Removethescrew 

andsixscrews .Thenremovethefanandheatsinkinthedirectionasshown

byarrow .

When installing:MakesurethatallthefanandDC‐INconnectorsareattached

firmly.

Step Screw (quantity) Color Torque

M2x5mm,flat‐head,nylok‐coated(1) Silver 1.5~2.0kgf.cm

M2x3mm,flat‐head,nylok‐coated(6) Black 1.0~1.5kgf.cm