Lenovo E51-80 Hardware Maintenance Manual page 74

• "1030 Optical disk drive" on page 52
• "1040 Base cover assembly" on page 54
• "1050 Hard disk drive or solid-state hybrid drive" on page 56
• "1060 Wireless-LAN /Bluetooth card" on page 57
• "1080 Upper case" on page 59
• "1090 Audio board, audio board cable, power board, touch pad board cable, finger printer board,
LED board and ODD switch board" on page 61
• "1100 System board" on page 64
Removal steps of the battery board
Loosen two screws 1 and then remove the battery board in the direction shown by arrow
Step Screw (quantity)
1
M2.0 × 3mm, flat-headed, nylon-coated (2)
Removal steps of the thermal fan assembly
Loosen six screws 3 and one screw
Step Screw (quantity)
3
M2.0 × 3mm, flat-headed, nylon-coated (6)
4
M2.0 × 5mm, flat-headed, nylon-coated (1) (E41)
M2.0 × 6mm, flat-headed, nylon-coated (1) (E51)
Remove the heat sink assembly in the direction shown by arrow
68
Hardware Maintenance Manual
a a
b
4 .
Color Torque
Black 1.85 +/- 0.15kgf-cm
Color Torque
Black
1.85 +/- 0.15kgf-cm
Silver 1.85 +/- 0.15kgf-cm
Black 1.85 +/- 0.15kgf-cm
5 .
2 (E51).