Lenovo K49 Notebook - Manual (Page 72)

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