47
Lenovo V145
1110 System board
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.
• In the whole process, make sure not to drop or stack the system board.
• If you put a system board down, make sure to put it only on a padded surface such
as an ESD mat or conductive corrugated material.
For access, remove these FRUs in order:
• “1010 Optical drive” on page 32
• “1020 Base cover” on page 33
• “1030 Battery pack” on page 35
• “1040 Hard disk drive” on page 36
• “1070 ODD board” on page 41
• “1080 Fan and heat sink assembly” on page 42
• “1090 Speaker” on page 45
• “1100 RTC battery” on page 46
Figure 11. Removal steps of system board
Detach the three connectors (EDP cable connector, KB FFC connector,
touchpad connector) in the directions shown by arrows , and . Remove
the screws .
2
1
2
1
4
4 4
3
Step Screw (quantity)
Color Torque
M2 × 3.5 mm, Phillips head, nylok-coated (3)
MB TO UPPER & DC-IN TO UPPER
Silver 1.85±0.15 kgf*cm