beautypg.com

1140 system board assembly – Lenovo K4350 Notebook User Manual

Page 63

background image

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 42

“1020 Bottom slot cover” on page 42

“1030 Memory modules” on page 43

“1040 Hard disk drive assembly” on page 45

“1050 PCI Express Mini Card for wireless LAN” on page 46

“1060 mSATA solid-state drive” on page 47

“1070 Backup battery” on page 48

“1080 Keyboard” on page 49

“1090 Keyboard bezel” on page 51

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

57