1110 System Board - Lenovo Ideapad 520S Series Hardware Maintenance Manual

Lenovo ideapad 520S/320S Hardware Maintenance Manual

1110 System board

For access, remove these FRUs in order:
• "1010 Base cover" on page 32
• "1020 Battery pack" on page 35
• "1030 Solid state disk" on page 36
• "1040 Hard disk drive" on page 37
• "1060 PCI Express Mini Card for wireless LAN" on page 40
• "1070 Fan and heat sink assembly" on page 43
• "1080 IO board" on page 46
• "1090 Speaker" on page 48
• "1100 Fingerprint module (Lenovo ideapad 520S-14IKB) (on select models)"
Figure 11. Removal steps of system board
Detach the five connectors (touchpad connector, KB backlight connector,
KB FPC connector, DC-in cable connector and EDP cable connector) in the
directions shown by arrows 1, 2, 3 and 4. Remove the screws 5.
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.
on page 49
Step Screw (quantity)
M2 × 3 mm, Phillips head, nylok-coated (3)
5
M/B---log up
Color Torque
Silver 1.0~1.5 kgf*cm