Lenovo K4450 Notebook - Manual (Page 69)

Remove the screws 4 , and then remove the media card reader slot board.
4
4
4
5
Step Screw (quantity) Color Torque
4 M2 × 3 mm, flat-head, nylon-coated (3) Black 0.181 Nm
(1.85 kgf-cm)
1140 System board assembly
For access, remove these FRUs in order:
•
“1010 Battery pack” on page 48
• “1020 Bottom slot cover” on page 48
• “1030 Memory modules” on page 49
• “1040 Hard disk drive assembly” on page 51
• “1050 PCI Express Mini Card for wireless LAN” on page 52
• “1060 mSATA solid-state drive” on page 53
• “1070 Backup battery” on page 54
• “1080 Keyboard” on page 55
• “1090 Keyboard bezel” on page 57
Important notice for replacing the system board
When replacing the system board, observe the following guidelines:
• Do not drop a system board on a bench top that has a hard surface, such as metal, wood, or composite.
• Do not apply any excessive force to a system board.
• Avoid rough handling of any kind.
• Avoid bending a system board or hard pushing to prevent cracking at each Ball Grid Array (BGA) chipset.
• When 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.
Chapter 8 . Removing or replacing a FRU 63