1110 System Board - Lenovo ideapad 520H-15IKB Maintenance Manual

Lenovo ideapad 520 Hardware Maintenance Manual

1110 System board

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
• "1060 PCI Express Mini Card for wireless LAN" on page 40
• "1070 Fan and heat sink assembly" on page 43
• "1080 ODD Board" on page 46
• "1090 Speaker" on page 47
• "1100 Upper case" on page 48
Figure 11. Removal steps of system board
Detach the three connectors (touchpad connector, HDD connector, KB FPC
connector) in the directions shown by arrows 1 and 2. Remove the screws 3.
When installing: Make sure that the connectors are attached firmly.
50
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.
Step Screw (quantity)
M2 × 3 mm, Phillips head, nylok-coated (3)
3
MB+C
Color Torque
Silver 1.85±0.15 kgf*cm