Lenovo K49 Hardware Maintenance Manual - Page 72

System board assembly, 1060 PCI Express Mini Card for wireless LAN

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1170 System board assembly Important notices for handling the system board: When handling the system board, bear the following in mind: • Be careful not to drop the system board on a bench top that has a hard surface, such as metal, wood, or composite. • Avoid rough handling of any kind. • At every point in the process, be sure not to drop or stack the system board. • If you put a system board down, be sure to put it only on a padded surface such as an ESD mat or a corrugated conductive surface. For access, remove these FRUs in order: • "1010 Battery pack" on page 44 • "1020 Bottom slot cover" on page 44 • "1030 Optical drive or blank bezel" on page 45 • "1040 Memory modules" on page 46 • "1050 Hard disk drive assembly" on page 47 • "1060 PCI Express Mini Card for wireless LAN" on page 49 • "1070 mSATA solid-state drive (on some models)" on page 51 • "1100 Keyboard" on page 55 • "1110 Keyboard bezel" on page 58 • "1150 Backup battery" on page 63 • "1160 Speaker assembly" on page 64 Removal steps of system board assembly Remove the screws 1 . Then detach LCD cable 3 and speaker assembly connectors 4 and 5 . 3 2 4 5 1 1 1 Step 1 Screw (quantity) M2 × 3 mm, flat-head, nylon-coated (3) Color Black Torque 1.85 kgf-cm 66 Hardware Maintenance Manual

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1170 System board assembly
Important notices for handling the system board:
When handling the system board, bear the following in mind:
•
Be careful not to drop the system board on a bench top that has a hard surface, such as metal, wood, or composite.
•
Avoid rough handling of any kind.
•
At every point in the process, be sure not to drop or stack the system board.
•
If you put a system board down, be sure to put it only on a padded surface such as an ESD mat or a corrugated
conductive surface.
For access, remove these FRUs in order:
•
“1010 Battery pack” on page 44
•
“1020 Bottom slot cover” on page 44
•
“1030 Optical drive or blank bezel” on page 45
•
“1040 Memory modules” on page 46
•
“1050 Hard disk drive assembly” on page 47
•
“1060 PCI Express Mini Card for wireless LAN” on page 49
•
“1070 mSATA solid-state drive (on some models)” on page 51
•
“1100 Keyboard” on page 55
•
“1110 Keyboard bezel” on page 58
•
“1150 Backup battery” on page 63
•
“1160 Speaker assembly” on page 64
Removal steps of system board assembly
Remove the screws
1
. Then detach LCD cable
3
and speaker assembly connectors
4
and
5
.
4
5
2
3
1
1
1
Step
Screw (quantity)
Color
Torque
1
M2 × 3 mm, flat-head, nylon-coated (3)
Black
1.85 kgf-cm
66
Hardware Maintenance Manual